diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index aed24a98b..03fa88b3a 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -12,15 +12,15 @@
 
 ### Added
 
-- Model roles: Configure different models for different purposes (default, small, slow) via `/model` selector
-- Model selector key bindings: Enter sets default, S sets small, L sets slow, Escape closes
-- Model selector shows role markers: ✓ for default, ⚡ for small, 🧠 for slow
+- Model roles: Configure different models for different purposes (default, smol, slow) via `/model` selector
+- Model selector key bindings: Enter sets default, S sets smol, L sets slow, Escape closes
+- Model selector shows role markers: ✓ for default, ⚡ for smol, 🧠 for slow
 - `pi/<role>` model aliases in Task tool agent definitions (e.g., `model: pi/smol, haiku, flash, mini`)
-- Small model auto-discovery using priority chain: haiku > flash > mini
+- Smol model auto-discovery using priority chain: haiku > flash > mini
 - Slow model auto-discovery using priority chain: gpt-5.2-codex > codex > gpt > opus > pro
 - CLI args for model roles: `--smol <model>` and `--slow <model>` (ephemeral, not persisted)
 - Env var overrides: `PI_SMOL_MODEL` and `PI_SLOW_MODEL`
-- Title generation now uses configured small model from settings
+- Title generation now uses configured smol model from settings
 
 - LSP diagnostics on edit: Edit tool can now return LSP diagnostics after editing code files. Disabled by default to avoid noise during multi-edit sequences. Enable via `lsp.diagnosticsOnEdit` setting.
 - LSP workspace diagnostics: New `lsp action=workspace_diagnostics` command checks the entire project for errors. Auto-detects project type and uses appropriate checker (rust-analyzer/cargo for Rust, tsc for TypeScript, go build for Go, pyright for Python).
diff --git a/packages/coding-agent/src/cli/args.ts b/packages/coding-agent/src/cli/args.ts
index 96fa4ec8f..bda12c83e 100644
--- a/packages/coding-agent/src/cli/args.ts
+++ b/packages/coding-agent/src/cli/args.ts
@@ -154,7 +154,7 @@ ${chalk.bold("Usage:")}
 ${chalk.bold("Options:")}
   --provider <name>              Provider name (default: google)
   --model <id>                   Model ID (default: gemini-2.5-flash)
-  --smol <id>                    Small/fast model for lightweight tasks (or PI_SMOL_MODEL env)
+  --smol <id>                    Smol/fast model for lightweight tasks (or PI_SMOL_MODEL env)
   --slow <id>                    Slow/reasoning model for thorough analysis (or PI_SLOW_MODEL env)
   --api-key <key>                API key (defaults to env vars)
   --system-prompt <text>         System prompt (default: coding assistant prompt)
diff --git a/packages/coding-agent/src/core/model-resolver.ts b/packages/coding-agent/src/core/model-resolver.ts
index 36f8cb27a..7b784d8b4 100644
--- a/packages/coding-agent/src/core/model-resolver.ts
+++ b/packages/coding-agent/src/core/model-resolver.ts
@@ -30,8 +30,8 @@ export interface ScopedModel {
 	thinkingLevel: ThinkingLevel;
 }
 
-/** Priority chain for auto-discovering small/fast models */
-export const SMALL_MODEL_PRIORITY = ["claude-haiku-4-5", "haiku", "flash", "mini"];
+/** Priority chain for auto-discovering smol/fast models */
+export const SMOL_MODEL_PRIORITY = ["claude-haiku-4-5", "haiku", "flash", "mini"];
 
 /** Priority chain for auto-discovering slow/comprehensive models (reasoning, codex) */
 export const SLOW_MODEL_PRIORITY = ["gpt-5.2-codex", "gpt-5.2", "codex", "gpt", "opus", "pro"];
@@ -416,14 +416,14 @@ export async function restoreModelFromSession(
 }
 
 /**
- * Find a small/fast model using the priority chain.
+ * Find a smol/fast model using the priority chain.
  * Tries exact matches first, then fuzzy matches.
  *
  * @param modelRegistry The model registry to search
  * @param savedModel Optional saved model string from settings (provider/modelId)
- * @returns The best available small model, or undefined if none found
+ * @returns The best available smol model, or undefined if none found
  */
-export async function findSmallModel(
+export async function findSmolModel(
 	modelRegistry: ModelRegistry,
 	savedModel?: string,
 ): Promise<Model<Api> | undefined> {
@@ -440,7 +440,7 @@ export async function findSmallModel(
 	}
 
 	// 2. Try priority chain
-	for (const pattern of SMALL_MODEL_PRIORITY) {
+	for (const pattern of SMOL_MODEL_PRIORITY) {
 		// Try exact match first
 		const exactMatch = availableModels.find((m) => m.id.toLowerCase() === pattern.toLowerCase());
 		if (exactMatch) return exactMatch;
diff --git a/packages/coding-agent/src/core/session-manager.ts b/packages/coding-agent/src/core/session-manager.ts
index 18f465e7d..6c75e1909 100644
--- a/packages/coding-agent/src/core/session-manager.ts
+++ b/packages/coding-agent/src/core/session-manager.ts
@@ -59,7 +59,7 @@ export interface ModelChangeEntry extends SessionEntryBase {
 	type: "model_change";
 	/** Model in "provider/modelId" format */
 	model: string;
-	/** Role: "default", "small", etc. Undefined treated as "default" */
+	/** Role: "default", "smol", "slow", etc. Undefined treated as "default" */
 	role?: string;
 }
 
diff --git a/packages/coding-agent/src/core/title-generator.ts b/packages/coding-agent/src/core/title-generator.ts
index b1724db5c..c90d5964b 100644
--- a/packages/coding-agent/src/core/title-generator.ts
+++ b/packages/coding-agent/src/core/title-generator.ts
@@ -1,11 +1,11 @@
 /**
- * Generate session titles using a small, fast model.
+ * Generate session titles using a smol, fast model.
  */
 
 import type { Model } from "@oh-my-pi/pi-ai";
 import { completeSimple } from "@oh-my-pi/pi-ai";
 import type { ModelRegistry } from "./model-registry.js";
-import { findSmallModel } from "./model-resolver.js";
+import { findSmolModel } from "./model-resolver.js";
 
 const TITLE_SYSTEM_PROMPT = `Generate a very short title (3-6 words) for a coding session based on the user's first message. The title should capture the main task or topic. Output ONLY the title, nothing else. No quotes, no punctuation at the end.
 
@@ -20,13 +20,13 @@ const MAX_INPUT_CHARS = 2000;
 
 /**
  * Find the best available model for title generation.
- * Uses the configured small model if set, otherwise auto-discovers using priority chain.
+ * Uses the configured smol model if set, otherwise auto-discovers using priority chain.
  *
  * @param registry Model registry
- * @param savedSmallModel Optional saved small model from settings (provider/modelId format)
+ * @param savedSmolModel Optional saved smol model from settings (provider/modelId format)
  */
-export async function findTitleModel(registry: ModelRegistry, savedSmallModel?: string): Promise<Model<any> | null> {
-	const model = await findSmallModel(registry, savedSmallModel);
+export async function findTitleModel(registry: ModelRegistry, savedSmolModel?: string): Promise<Model<any> | null> {
+	const model = await findSmolModel(registry, savedSmolModel);
 	return model ?? null;
 }
 
@@ -35,14 +35,14 @@ export async function findTitleModel(registry: ModelRegistry, savedSmallModel?:
  *
  * @param firstMessage The first user message
  * @param registry Model registry
- * @param savedSmallModel Optional saved small model from settings (provider/modelId format)
+ * @param savedSmolModel Optional saved smol model from settings (provider/modelId format)
  */
 export async function generateSessionTitle(
 	firstMessage: string,
 	registry: ModelRegistry,
-	savedSmallModel?: string,
+	savedSmolModel?: string,
 ): Promise<string | null> {
-	const model = await findTitleModel(registry, savedSmallModel);
+	const model = await findTitleModel(registry, savedSmolModel);
 	if (!model) return null;
 
 	const apiKey = await registry.getApiKey(model);
diff --git a/packages/coding-agent/src/core/tools/task/model-resolver.ts b/packages/coding-agent/src/core/tools/task/model-resolver.ts
index b9d064be6..fb905ed34 100644
--- a/packages/coding-agent/src/core/tools/task/model-resolver.ts
+++ b/packages/coding-agent/src/core/tools/task/model-resolver.ts
@@ -7,7 +7,7 @@
  *   - Comma fallback: "gpt, opus" → tries gpt first, then opus
  *   - "default" → undefined (use system default)
  *   - "pi/default" → configured default model from settings
- *   - "pi/small" or "pi/smol" → configured small model from settings
+ *   - "pi/smol" → configured smol model from settings
  */
 
 import { spawnSync } from "node:child_process";
diff --git a/packages/coding-agent/src/main.ts b/packages/coding-agent/src/main.ts
index beb0e08ac..a4b640cdb 100644
--- a/packages/coding-agent/src/main.ts
+++ b/packages/coding-agent/src/main.ts
@@ -362,7 +362,7 @@ export async function main(args: string[]) {
 	const slowModel = parsed.slow ?? process.env.PI_SLOW_MODEL;
 	if (smolModel || slowModel) {
 		const roleOverrides: Record<string, string> = {};
-		if (smolModel) roleOverrides.small = smolModel;
+		if (smolModel) roleOverrides.smol = smolModel;
 		if (slowModel) roleOverrides.slow = slowModel;
 		settingsManager.applyOverrides({ modelRoles: roleOverrides });
 	}
diff --git a/packages/coding-agent/src/modes/interactive/components/model-selector.ts b/packages/coding-agent/src/modes/interactive/components/model-selector.ts
index 363637faa..eb920806b 100644
--- a/packages/coding-agent/src/modes/interactive/components/model-selector.ts
+++ b/packages/coding-agent/src/modes/interactive/components/model-selector.ts
@@ -21,7 +21,8 @@ interface ScopedModelItem {
 /**
  * Component that renders a model selector with search.
  * - Enter: Set selected model as default
- * - S: Set selected model as small
+ * - S: Set selected model as smol
+ * - L: Set selected model as slow
  * - Escape: Close selector
  */
 export class ModelSelectorComponent extends Container {
@@ -32,7 +33,7 @@ export class ModelSelectorComponent extends Container {
 	private selectedIndex: number = 0;
 	private currentModel?: Model<any>;
 	private defaultModel?: Model<any>;
-	private smallModel?: Model<any>;
+	private smolModel?: Model<any>;
 	private slowModel?: Model<any>;
 	private settingsManager: SettingsManager;
 	private modelRegistry: ModelRegistry;
@@ -74,7 +75,7 @@ export class ModelSelectorComponent extends Container {
 				? "Showing models from --models scope"
 				: "Only showing models with configured API keys (see README for details)";
 		this.addChild(new Text(theme.fg("warning", hintText), 0, 0));
-		this.addChild(new Text(theme.fg("muted", "Enter: default  S: small  L: slow  Esc: close"), 0, 0));
+		this.addChild(new Text(theme.fg("muted", "Enter: default  S: smol  L: slow  Esc: close"), 0, 0));
 		this.addChild(new Spacer(1));
 
 		// Create search input
@@ -119,12 +120,12 @@ export class ModelSelectorComponent extends Container {
 			}
 		}
 
-		// Load small model
-		const smallStr = roles.small;
-		if (smallStr) {
-			const parsed = parseModelString(smallStr);
+		// Load smol model
+		const smolStr = roles.smol;
+		if (smolStr) {
+			const parsed = parseModelString(smolStr);
 			if (parsed) {
-				this.smallModel = allModels.find((m) => m.provider === parsed.provider && m.id === parsed.id);
+				this.smolModel = allModels.find((m) => m.provider === parsed.provider && m.id === parsed.id);
 			}
 		}
 
@@ -211,13 +212,13 @@ export class ModelSelectorComponent extends Container {
 
 			const isSelected = i === this.selectedIndex;
 			const isDefault = modelsAreEqual(this.defaultModel, item.model);
-			const isSmall = modelsAreEqual(this.smallModel, item.model);
+			const isSmol = modelsAreEqual(this.smolModel, item.model);
 			const isSlow = modelsAreEqual(this.slowModel, item.model);
 
-			// Build role markers: ✓ for default, ⚡ for small, 🧠 for slow
+			// Build role markers: ✓ for default, ⚡ for smol, 🧠 for slow
 			let markers = "";
 			if (isDefault) markers += theme.fg("success", " ✓");
-			if (isSmall) markers += theme.fg("warning", " ⚡");
+			if (isSmol) markers += theme.fg("warning", " ⚡");
 			if (isSlow) markers += theme.fg("accent", " 🧠");
 
 			let line = "";
@@ -273,11 +274,11 @@ export class ModelSelectorComponent extends Container {
 				this.handleSelect(selectedModel.model, "default");
 			}
 		}
-		// S key - set as small model (don't close)
+		// S key - set as smol model (don't close)
 		else if (keyData === "s" || keyData === "S") {
 			const selectedModel = this.filteredModels[this.selectedIndex];
 			if (selectedModel) {
-				this.handleSelect(selectedModel.model, "small");
+				this.handleSelect(selectedModel.model, "smol");
 			}
 		}
 		// L key - set as slow model (don't close)
@@ -305,8 +306,8 @@ export class ModelSelectorComponent extends Container {
 		// Update local state for UI
 		if (role === "default") {
 			this.defaultModel = model;
-		} else if (role === "small") {
-			this.smallModel = model;
+		} else if (role === "smol") {
+			this.smolModel = model;
 		} else if (role === "slow") {
 			this.slowModel = model;
 		}
diff --git a/packages/coding-agent/src/modes/interactive/interactive-mode.ts b/packages/coding-agent/src/modes/interactive/interactive-mode.ts
index 1048be905..1d5b625f3 100644
--- a/packages/coding-agent/src/modes/interactive/interactive-mode.ts
+++ b/packages/coding-agent/src/modes/interactive/interactive-mode.ts
@@ -1609,8 +1609,8 @@ export class InteractiveMode {
 
 		// Generate title in background
 		const registry = this.session.modelRegistry;
-		const smallModel = this.settingsManager.getModelRole("small");
-		generateSessionTitle(messageText, registry, smallModel)
+		const smolModel = this.settingsManager.getModelRole("smol");
+		generateSessionTitle(messageText, registry, smolModel)
 			.then((title) => {
 				if (title) {
 					this.sessionManager.setSessionTitle(title);
@@ -1766,7 +1766,7 @@ export class InteractiveMode {
 							this.updateEditorBorderColor();
 						}
 						// For other roles (small), just show status - settings already updated by selector
-						const roleLabel = role === "default" ? "Default" : role === "small" ? "Small" : role;
+						const roleLabel = role === "default" ? "Default" : role === "smol" ? "Smol" : role;
 						this.showStatus(`${roleLabel} model: ${model.id}`);
 					} catch (error) {
 						this.showError(error instanceof Error ? error.message : String(error));