Christian Stewart
614 lines
22 KiB
TypeScript
614 lines
22 KiB
TypeScript
import type { ResolvedThinkingLevel } from "@oh-my-pi/pi-agent-core";
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import type {
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Api,
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ApiKeyResolver,
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AssistantMessage,
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AssistantMessageEvent,
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AssistantMessageEventStream,
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Context,
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Effort,
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Model,
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ProviderSessionState,
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ServiceTier,
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ServiceTierByFamily,
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SimpleStreamOptions,
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} from "@oh-my-pi/pi-ai";
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import { resolveModelServiceTier, streamSimple } from "@oh-my-pi/pi-ai";
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import { buildModelProviderPriorityRank } from "@oh-my-pi/pi-catalog/identity";
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import { replaceTabs, truncateToWidth } from "@oh-my-pi/pi-tui";
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import { formatDuration, getProjectDir } from "@oh-my-pi/pi-utils";
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import chalk from "chalk";
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import type { ApiKeyResolverModel } from "../config/api-key-resolver";
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import { ModelRegistry } from "../config/model-registry";
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import {
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formatModelSelectorValue,
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formatModelString,
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getModelMatchPreferences,
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resolveCliModel,
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} from "../config/model-resolver";
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import { buildServiceTierByFamily, serviceTierForAllFamilies, serviceTierSettingToTier } from "../config/service-tier";
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import { Settings } from "../config/settings";
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import benchPrompt from "../prompts/bench.md" with { type: "text" };
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import { discoverAuthStorage, loadCliExtensionProviders } from "../sdk";
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import {
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concreteThinkingLevel,
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resolveThinkingLevelForModel,
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shouldDisableReasoning,
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toReasoningEffort,
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} from "../thinking";
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const DEFAULT_RUNS = 10;
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const DEFAULT_PAR = 4;
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const DEFAULT_MAX_TOKENS = 512;
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const ERROR_WIDTH = 110;
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const BENCH_PROMPT = benchPrompt.trim();
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export interface BenchCommandArgs {
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models: string[];
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flags: {
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runs?: number;
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maxTokens?: number;
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prompt?: string;
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/** Service-tier setting value (`none` omits); overrides the configured `serviceTier` setting. */
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serviceTier?: string;
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json?: boolean;
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par?: number;
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};
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}
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export interface BenchModelRegistry {
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getAll(): Model<Api>[];
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getApiKey(model: Model<Api>, sessionId?: string): Promise<string | undefined>;
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resolver(model: ApiKeyResolverModel, sessionId?: string): ApiKeyResolver;
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hasConfiguredAuth?(model: Model<Api>): boolean;
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}
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export interface BenchRuntime {
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modelRegistry: BenchModelRegistry;
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settings?: Settings;
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close?: () => void;
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}
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export interface BenchRunSuccess {
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ok: true;
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ttftMs: number;
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durationMs: number;
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outputTokens: number;
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/** Output tokens/sec over the total request duration. */
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tokensPerSecond: number;
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}
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export interface BenchRunFailure {
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ok: false;
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error: string;
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}
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export type BenchRunResult = BenchRunSuccess | BenchRunFailure;
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export interface BenchAverages {
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ttftMs: number;
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durationMs: number;
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outputTokens: number;
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tokensPerSecond: number;
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}
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export interface BenchModelReport {
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/** Selector as the user typed it (e.g. "opus" or "gemini-3.5:low"). */
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selector: string;
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/** Resolved `provider/id`. */
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model: string;
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/** Explicit thinking level from a `:level` selector suffix; undefined = provider default. */
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thinking?: ResolvedThinkingLevel;
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results: BenchRunResult[];
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/** Averages over successful runs; null when every run failed. */
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average: BenchAverages | null;
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}
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export interface BenchSummary {
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runs: number;
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maxTokens: number;
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models: BenchModelReport[];
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failures: number;
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/** Requested per-family service tiers, resolved per model before reaching the wire. */
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serviceTierByFamily?: ServiceTierByFamily;
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}
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type BenchStreamSimple = (
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model: Model<Api>,
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context: Context,
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options?: SimpleStreamOptions,
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) => AssistantMessageEventStream;
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export interface BenchDependencies {
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createRuntime?: () => Promise<BenchRuntime>;
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randomSessionId?: () => string;
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writeStdout?: (text: string) => void;
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writeStderr?: (text: string) => void;
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setExitCode?: (code: number) => void;
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streamSimple?: BenchStreamSimple;
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now?: () => number;
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stdoutIsTTY?: boolean;
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}
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function getErrorMessage(error: unknown): string {
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if (error instanceof Error && error.message) return error.message;
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return String(error);
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}
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function normalizePositiveInteger(name: string, value: number | undefined, fallback: number): number {
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if (value === undefined) return fallback;
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if (!Number.isInteger(value) || value <= 0) {
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throw new Error(`Expected --${name} to be a positive integer, got ${value}`);
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}
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return value;
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}
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function closeProviderSessionStates(providerSessionState: Map<string, ProviderSessionState>): void {
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for (const state of providerSessionState.values()) {
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state.close();
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}
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providerSessionState.clear();
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}
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function isFirstTokenEvent(event: AssistantMessageEvent): boolean {
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switch (event.type) {
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case "text_delta":
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case "thinking_delta":
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case "toolcall_delta":
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return event.delta.length > 0;
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case "text_end":
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case "thinking_end":
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return event.content.length > 0;
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case "image_end":
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return true;
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default:
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return false;
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}
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}
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/** Final message carries visible output — non-empty text/thinking, an image, or a tool call. */
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function hasVisibleFinalContent(message: AssistantMessage): boolean {
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return message.content.some(block => {
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switch (block.type) {
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case "text":
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return block.text.length > 0;
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case "thinking":
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return block.thinking.length > 0;
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case "image":
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case "redactedThinking":
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case "toolCall":
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return true;
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default:
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return false;
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}
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});
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}
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interface BenchRequestOptions {
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apiKey: ApiKeyResolver;
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sessionId: string;
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prompt: string;
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maxTokens: number;
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/** Explicit effort from a `:level` selector suffix; absent = provider default. */
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reasoning?: Effort;
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/** Only set for an explicit `:off` suffix — some endpoints reject disablement. */
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disableReasoning?: boolean;
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/** Requested service tier passed to `streamSimple`; absent omits the option. The provider layer applies scope/support gating before it reaches the wire. */
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serviceTier?: ServiceTier;
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}
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async function runBenchRequest(
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model: Model<Api>,
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options: BenchRequestOptions,
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streamFn: BenchStreamSimple,
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now: () => number,
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): Promise<BenchRunResult> {
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const startedAt = now();
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let firstTokenAt: number | undefined;
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const providerSessionState = new Map<string, ProviderSessionState>();
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try {
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const context: Context = {
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// Codex's Responses endpoint 400s with "Instructions are required" when no
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// system prompt is present — same guard as eval's completion bridge.
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systemPrompt: ["You are a helpful assistant."],
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messages: [{ role: "user", content: options.prompt, timestamp: Date.now(), attribution: "user" }],
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};
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const stream = streamFn(model, context, {
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apiKey: options.apiKey,
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sessionId: options.sessionId,
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maxTokens:
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model.maxTokens !== null && Number.isFinite(model.maxTokens) && model.maxTokens > 0
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? Math.min(options.maxTokens, model.maxTokens)
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: options.maxTokens,
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reasoning: options.reasoning,
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disableReasoning: options.disableReasoning,
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serviceTier: options.serviceTier,
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providerSessionState,
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preferWebsockets: true,
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// pi-ai opts every OpenRouter request into response caching (1h TTL).
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// Bench sends a byte-identical request each run, so within the TTL
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// OpenRouter replays the cached generation with zeroed usage — the run
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// shows "tokens 0, TPS 0.0" at line speed. Opt back out so every run
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// measures a fresh generation.
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headers: model.provider === "openrouter" ? { "X-OpenRouter-Cache": "false" } : undefined,
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});
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let message: AssistantMessage | undefined;
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for await (const event of stream) {
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if (firstTokenAt === undefined && isFirstTokenEvent(event)) {
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firstTokenAt = now();
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}
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if (event.type === "error") {
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return { ok: false, error: event.error.errorMessage ?? "request failed" };
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}
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if (event.type === "done") {
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message = event.message;
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}
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}
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message ??= await stream.result();
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if (message.stopReason === "error" || message.errorMessage) {
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return { ok: false, error: message.errorMessage ?? "request failed" };
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}
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const rawDuration = message.duration ?? now() - startedAt;
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const durationMs = Number.isFinite(rawDuration) && rawDuration > 0 ? rawDuration : 0;
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const rawTtft = message.ttft ?? (firstTokenAt === undefined ? durationMs : firstTokenAt - startedAt);
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const ttftMs = Number.isFinite(rawTtft) && rawTtft > 0 ? rawTtft : 0;
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const outputTokens = Number.isFinite(message.usage.output) && message.usage.output > 0 ? message.usage.output : 0;
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// A run that streamed no content (no delta/end event set firstTokenAt),
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// carries no visible final content, and measured no output tokens
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// benchmarked nothing — a genuinely empty stream (e.g. a gateway that 200s
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// with an empty body). Surface it as a failure instead of a misleading
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// 0-token "✓". Streaming and buffered providers that produce content keep
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// passing even when usage is omitted.
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if (firstTokenAt === undefined && outputTokens === 0 && !hasVisibleFinalContent(message)) {
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return {
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ok: false,
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error: `provider returned no output (0 tokens, empty stream; stop reason: ${message.stopReason ?? "unknown"})`,
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};
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}
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return {
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ok: true,
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ttftMs,
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durationMs,
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outputTokens,
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// TPS over the TOTAL request duration, deliberately not the post-TTFT
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// decode window: reasoning models can spend seconds generating hidden
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// thinking tokens (counted in usage.output) before the first visible
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// byte, so "duration - TTFT" inflates TPS several-fold on providers
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// that buffer or hide reasoning (e.g. google vs google-vertex).
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tokensPerSecond: durationMs > 0 ? (outputTokens * 1000) / durationMs : 0,
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};
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} catch (error) {
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return { ok: false, error: getErrorMessage(error) };
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} finally {
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closeProviderSessionStates(providerSessionState);
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}
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}
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function buildModelReport(
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selector: string,
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model: Model<Api>,
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thinking: ResolvedThinkingLevel | undefined,
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results: BenchRunResult[],
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): BenchModelReport {
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const successes = results.filter((result): result is BenchRunSuccess => result.ok);
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const average =
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successes.length === 0
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? null
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: {
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ttftMs: successes.reduce((sum, r) => sum + r.ttftMs, 0) / successes.length,
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durationMs: successes.reduce((sum, r) => sum + r.durationMs, 0) / successes.length,
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outputTokens: successes.reduce((sum, r) => sum + r.outputTokens, 0) / successes.length,
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tokensPerSecond: successes.reduce((sum, r) => sum + r.tokensPerSecond, 0) / successes.length,
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};
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return { selector, model: formatModelString(model), thinking, results, average };
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}
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function formatBenchModelLabel(report: BenchModelReport): string {
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return formatModelSelectorValue(report.model, report.thinking);
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}
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function formatMs(ms: number): string {
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return formatDuration(Math.max(0, Math.round(ms)));
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}
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function formatRunLine(result: BenchRunResult, index: number, total: number): string {
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const prefix = chalk.dim(`run ${index + 1}/${total}`);
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if (result.ok) {
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return ` ${chalk.green("✓")} ${prefix} ${chalk.dim("TTFT")} ${formatMs(result.ttftMs)} ${chalk.dim("TPS")} ${result.tokensPerSecond.toFixed(1)}/s ${chalk.dim("tokens")} ${result.outputTokens} ${chalk.dim("total")} ${formatMs(result.durationMs)}`;
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}
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return ` ${chalk.red("✗")} ${prefix} ${chalk.red(truncateToWidth(replaceTabs(result.error).replace(/\r?\n/g, " "), ERROR_WIDTH))}`;
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}
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export function formatBenchTable(summary: BenchSummary): string {
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const ranked = [...summary.models].sort((a, b) => {
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if (a.average === null && b.average === null) return 0;
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if (a.average === null) return 1;
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if (b.average === null) return -1;
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return b.average.tokensPerSecond - a.average.tokensPerSecond;
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});
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const rows = ranked.map(report => ({
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model: formatBenchModelLabel(report),
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ttft: report.average ? formatMs(report.average.ttftMs) : "-",
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tps: report.average ? `${report.average.tokensPerSecond.toFixed(1)}/s` : "-",
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tokens: report.average ? String(Math.round(report.average.outputTokens)) : "-",
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total: report.average ? formatMs(report.average.durationMs) : "-",
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failed: report.results.filter(result => !result.ok).length,
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}));
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const headers = { model: "model", ttft: "TTFT", tps: "TPS", tokens: "tokens", total: "total" } as const;
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const width = (key: keyof typeof headers): number =>
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Math.max(headers[key].length, ...rows.map(row => row[key].length));
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const lines = [
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[
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headers.model.padEnd(width("model")),
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headers.ttft.padEnd(width("ttft")),
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headers.tps.padEnd(width("tps")),
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headers.tokens.padEnd(width("tokens")),
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headers.total.padEnd(width("total")),
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]
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.join(" ")
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.trimEnd(),
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];
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for (const row of rows) {
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const failedSuffix = row.failed > 0 ? ` ${chalk.red(`(${row.failed} failed)`)}` : "";
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lines.push(
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[
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row.model.padEnd(width("model")),
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row.ttft.padEnd(width("ttft")),
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row.tps.padEnd(width("tps")),
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row.tokens.padEnd(width("tokens")),
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row.total.padEnd(width("total")),
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]
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.join(" ")
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.trimEnd() + failedSuffix,
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);
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}
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return `${lines.map((line, index) => (index === 0 ? chalk.dim(line) : line)).join("\n")}\n`;
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}
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async function createDefaultRuntime(): Promise<BenchRuntime> {
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const authStorage = await discoverAuthStorage();
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try {
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const cwd = getProjectDir();
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const settings = await Settings.init({ cwd });
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const modelRegistry = new ModelRegistry(authStorage);
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await loadCliExtensionProviders(modelRegistry, settings, cwd);
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return {
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modelRegistry,
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settings,
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close: () => authStorage.close(),
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};
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} catch (error) {
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authStorage.close();
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throw error;
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}
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}
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interface BenchTarget {
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selector: string;
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model: Model<Api>;
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thinking: ResolvedThinkingLevel | undefined;
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}
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/** Highest-priority provider variant: native/OAuth transports outrank mirrors. */
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function pickHighestPriorityProvider(models: Model<Api>[], providerOrder?: readonly string[]): Model<Api> | undefined {
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if (models.length <= 1) return models[0];
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const priority = buildModelProviderPriorityRank(providerOrder);
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return [...models].sort((a, b) => {
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const aRank = priority.get(a.provider.toLowerCase()) ?? Number.POSITIVE_INFINITY;
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const bRank = priority.get(b.provider.toLowerCase()) ?? Number.POSITIVE_INFINITY;
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return aRank - bRank;
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})[0];
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}
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/**
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* Bench resolves selectors against the entire catalog (credentials are ignored),
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* so an ambiguous id shared by several providers can land on one the user never
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* authenticated. For non-pinned selectors, redirect to an equivalent model under
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* a provider with configured auth. An explicit `provider/id` selector is honored
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* verbatim — even unauthenticated — so forced benchmarking keeps working.
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*/
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function resolveAuthenticatedAlternative(
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selector: string,
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model: Model<Api>,
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modelRegistry: BenchModelRegistry,
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providerOrder?: readonly string[],
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): Model<Api> | undefined {
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if (!modelRegistry.hasConfiguredAuth) return undefined;
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// A pinned `provider/...` selector is authoritative; never redirect off it.
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if (selector.trim().toLowerCase().startsWith(`${model.provider.toLowerCase()}/`)) return undefined;
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if (modelRegistry.hasConfiguredAuth(model)) return undefined;
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const seen = new Set<string>();
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const authenticated: Model<Api>[] = [];
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const consider = (candidate: Model<Api>): void => {
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const key = `${candidate.provider}/${candidate.id}`;
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if (seen.has(key)) return;
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seen.add(key);
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if (modelRegistry.hasConfiguredAuth?.(candidate)) authenticated.push(candidate);
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};
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// Same-id fallback for equivalent entries under providers with configured auth.
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for (const candidate of modelRegistry.getAll()) {
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if (candidate.id === model.id) consider(candidate);
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}
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return pickHighestPriorityProvider(authenticated, providerOrder);
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}
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function resolveBenchModels(
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selectors: string[],
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modelRegistry: BenchModelRegistry,
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settings: Settings | undefined,
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writeStderr: (text: string) => void,
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): BenchTarget[] {
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const preferences = getModelMatchPreferences(settings);
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const resolved: BenchTarget[] = [];
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const errors: string[] = [];
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for (const selector of selectors) {
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const result = resolveCliModel({ cliModel: selector, modelRegistry, settings, preferences });
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if (result.error) {
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errors.push(`${selector}: ${result.error}`);
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continue;
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}
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if (!result.model) {
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errors.push(`${selector}: model not found`);
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continue;
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}
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if (result.warning) writeStderr(`${chalk.yellow(`Warning: ${result.warning}`)}\n`);
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let model = result.model;
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const authSelector = result.configuredPatterns?.[result.configuredPatternIndex ?? 0] ?? selector;
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const authenticated = resolveAuthenticatedAlternative(
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authSelector,
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model,
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modelRegistry,
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preferences.providerOrder,
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);
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if (authenticated) {
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writeStderr(
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`${chalk.yellow(
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`Warning: no credentials for "${model.provider}"; benchmarking ${formatModelString(authenticated)} instead. Pin "${formatModelString(model)}" to force it.`,
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)}\n`,
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);
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model = authenticated;
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}
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resolved.push({
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selector,
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model,
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thinking: resolveThinkingLevelForModel(model, concreteThinkingLevel(result.thinkingLevel)),
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});
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}
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if (errors.length > 0) {
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throw new Error(`Could not resolve ${errors.length === 1 ? "model" : "models"}:\n${errors.join("\n")}`);
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}
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return resolved;
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}
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export async function runBenchCommand(command: BenchCommandArgs, deps: BenchDependencies = {}): Promise<BenchSummary> {
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const runs = normalizePositiveInteger("runs", command.flags.runs, DEFAULT_RUNS);
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const maxTokens = normalizePositiveInteger("max-tokens", command.flags.maxTokens, DEFAULT_MAX_TOKENS);
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const par =
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command.flags.par !== undefined ? normalizePositiveInteger("par", command.flags.par, DEFAULT_PAR) : DEFAULT_PAR;
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const prompt = command.flags.prompt?.trim() || BENCH_PROMPT;
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const json = command.flags.json === true;
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const randomSessionId = deps.randomSessionId ?? (() => Bun.randomUUIDv7());
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const writeStdout = deps.writeStdout ?? ((text: string) => process.stdout.write(text));
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const writeStderr = deps.writeStderr ?? ((text: string) => process.stderr.write(text));
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const setExitCode =
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deps.setExitCode ??
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((code: number) => {
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process.exitCode = code;
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});
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const streamFn = deps.streamSimple ?? streamSimple;
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const now = deps.now ?? (() => performance.now());
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const interactive = deps.stdoutIsTTY ?? process.stdout.isTTY === true;
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if (command.models.length === 0) {
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throw new Error("Pass at least one model selector, e.g. `omp bench opus gpt-5.2`");
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}
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const runtime = await (deps.createRuntime ?? createDefaultRuntime)();
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try {
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const targets = resolveBenchModels(command.models, runtime.modelRegistry, runtime.settings, writeStderr);
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// Explicit `--service-tier` (a single value broadcast across families) wins;
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// otherwise fall back to the configured per-family `tier.*` settings. Each
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// model resolves its own family's tier below before reaching the wire.
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const flagTier = command.flags.serviceTier ? serviceTierSettingToTier(command.flags.serviceTier) : undefined;
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const serviceTierByFamily = command.flags.serviceTier
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? serviceTierForAllFamilies(flagTier)
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: buildServiceTierByFamily(
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runtime.settings?.get("tier.openai") ?? "none",
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runtime.settings?.get("tier.anthropic") ?? "none",
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runtime.settings?.get("tier.google") ?? "none",
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);
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if (!json && flagTier) writeStdout(`${chalk.dim(`service tier: ${flagTier}`)}\n`);
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const reports: BenchModelReport[] = [];
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for (const { selector, model, thinking } of targets) {
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if (!json) {
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const resolvedModel = formatModelSelectorValue(formatModelString(model), thinking);
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const resolvedNote = selector === resolvedModel ? "" : chalk.dim(` (${selector})`);
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writeStdout(`${chalk.bold(resolvedModel)}${resolvedNote}\n`);
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}
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const results: BenchRunResult[] = [];
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// Preflight check: let's verify credentials before starting any runs.
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// This matches the old sequential break behavior exactly and avoids launching/printing
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// multiple failures.
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const testSessionId = randomSessionId();
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const preflightKey = await runtime.modelRegistry.getApiKey(model, testSessionId);
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if (!preflightKey) {
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const failure: BenchRunFailure = {
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ok: false,
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error: `No credentials for provider "${model.provider}". Run \`omp\` and use /login, or set the provider API key.`,
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};
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results.push(failure);
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if (!json) writeStdout(`${formatRunLine(failure, 0, runs)}\n`);
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reports.push(buildModelReport(selector, model, thinking, results));
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continue;
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}
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// We will launch up to `par` workers/requests concurrently.
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// To keep output clean, non-JSON output emits entries in correct index order.
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let nextToPrint = 0;
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const runWorker = async (index: number) => {
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const sessionId = index === 0 ? testSessionId : randomSessionId();
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const result = await runBenchRequest(
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model,
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{
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apiKey: runtime.modelRegistry.resolver(model, sessionId),
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sessionId,
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prompt,
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maxTokens,
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reasoning: toReasoningEffort(thinking),
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disableReasoning: shouldDisableReasoning(thinking) ? true : undefined,
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serviceTier: resolveModelServiceTier(serviceTierByFamily, model),
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},
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streamFn,
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now,
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);
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results[index] = result;
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};
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// Concurrency-limited running pool
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const queue = Array.from({ length: runs }, (_, i) => i);
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const activeWorkers: Promise<void>[] = [];
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const processNext = async (): Promise<void> => {
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if (queue.length === 0) return;
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const index = queue.shift()!;
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// Pre-print a status update if requested and interactive
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if (!json && interactive) {
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writeStdout(chalk.dim(` … run ${index + 1}/${runs} streaming\n`));
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}
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await runWorker(index);
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// Attempt to print completed results that are in-order
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if (!json) {
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while (nextToPrint < runs && results[nextToPrint] !== undefined) {
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const res = results[nextToPrint];
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writeStdout(`${formatRunLine(res, nextToPrint, runs)}\n`);
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nextToPrint++;
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}
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}
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await processNext();
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};
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for (let w = 0; w < Math.min(par, runs); w++) {
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activeWorkers.push(processNext());
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}
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await Promise.all(activeWorkers);
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reports.push(buildModelReport(selector, model, thinking, results));
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}
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const failures = reports.reduce((sum, report) => sum + report.results.filter(result => !result.ok).length, 0);
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const summary: BenchSummary = { runs, maxTokens, models: reports, failures, serviceTierByFamily };
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if (json) {
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writeStdout(`${JSON.stringify(summary, null, 2)}\n`);
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} else if (reports.length > 1 || runs > 1) {
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writeStdout(`\n${formatBenchTable(summary)}`);
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}
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if (failures > 0) setExitCode(1);
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return summary;
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} finally {
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runtime.close?.();
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}
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}
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