diff --git a/packages/ai/CHANGELOG.md b/packages/ai/CHANGELOG.md
index 883ae8553..7b9e905c8 100644
--- a/packages/ai/CHANGELOG.md
+++ b/packages/ai/CHANGELOG.md
@@ -1,6 +1,16 @@
 # Changelog
 
 ## [Unreleased]
+### Changed
+
+- Updated thinking configuration format from `levels` array to `minLevel` and `maxLevel` properties for improved clarity
+- Corrected context window from 400000 to 272000 tokens for GPT-5.4 mini and nano variants on Codex transport
+- Normalized GPT-5.4 variant priority handling to use parsed variant instead of special-casing raw model IDs
+- Added support for `mini` variant in OpenAI model parsing regex
+
+### Fixed
+
+- Fixed inconsistent thinking level configuration across multiple model definitions
 
 ## [13.14.0] - 2026-03-20
 
diff --git a/packages/ai/scripts/generate-models.ts b/packages/ai/scripts/generate-models.ts
index 52829a5b1..9e7610910 100644
--- a/packages/ai/scripts/generate-models.ts
+++ b/packages/ai/scripts/generate-models.ts
@@ -304,9 +304,6 @@ async function generateModels() {
 		}
 	}
 
-	applyGeneratedModelPolicies(allModels);
-	linkSparkPromotionTargets(allModels);
-
 	// Merge previous models.json entries as fallback for any provider/model
 	// not fetched dynamically. This replaces all hardcoded fallback lists —
 	// static-only providers (vertex, gemini-cli), auth-gated providers when
@@ -326,6 +323,8 @@ async function generateModels() {
 
 	allModels = applyGlobalModelsDevFallback(allModels, modelsDevModels);
 	allModels = applyPremiumMultiplierOverrides(allModels);
+	applyGeneratedModelPolicies(allModels);
+	linkSparkPromotionTargets(allModels);
 
 	// Group by provider and sort each provider's models
 	const providers: Record<string, Record<string, Model>> = {};
diff --git a/packages/ai/src/model-thinking.ts b/packages/ai/src/model-thinking.ts
index 3d01dda3f..621ec677a 100644
--- a/packages/ai/src/model-thinking.ts
+++ b/packages/ai/src/model-thinking.ts
@@ -40,7 +40,13 @@ type SemVer = {
 
 type GeminiKind = "pro" | "flash";
 type AnthropicKind = "opus" | "sonnet";
-type OpenAIVariant = "base" | "codex" | "codex-max" | "codex-mini" | "codex-spark" | "max" | "nano";
+type OpenAIVariant = "base" | "codex" | "codex-max" | "codex-mini" | "codex-spark" | "mini" | "max" | "nano";
+
+const CODEX_GPT_5_4_PRIORITY_BY_VARIANT: Partial<Record<OpenAIVariant, number>> = {
+	base: 0,
+	mini: 1,
+	nano: 2,
+};
 
 interface GeminiModel {
 	family: "gemini";
@@ -299,9 +305,17 @@ function applyOpenAICatalogPolicy(model: ApiModel<Api>, parsedModel: OpenAIModel
 		return;
 	}
 	// GPT-5.4 mini/nano use plain OpenAI IDs on the Codex transport, but Codex still
-	// enforces the lower prompt budget for these variants.
-	if (model.api === "openai-codex-responses" && (model.id === "gpt-5.4-mini" || model.id === "gpt-5.4-nano")) {
-		model.contextWindow = 272000;
+	// enforces the lower prompt budget for these variants. Codex discovery can also
+	// report inconsistent priorities for the GPT-5.4 family, so normalize by parsed
+	// variant instead of special-casing raw model ids.
+	if (model.api === "openai-codex-responses" && semverEqual(parsedModel.version, "5.4")) {
+		const normalizedPriority = CODEX_GPT_5_4_PRIORITY_BY_VARIANT[parsedModel.variant];
+		if (normalizedPriority !== undefined) {
+			model.priority = normalizedPriority;
+		}
+		if (parsedModel.variant === "mini" || parsedModel.variant === "nano") {
+			model.contextWindow = 272000;
+		}
 	}
 }
 
@@ -489,7 +503,7 @@ function parseAnthropicModel(modelId: string): AnthropicModel | null {
 }
 
 function parseOpenAIModel(modelId: string): OpenAIModel | null {
-	const match = /gpt-(\d+(?:\.\d+){0,2})(?:-(codex-spark|codex-mini|codex-max|codex|max|nano))?\b/.exec(modelId);
+	const match = /gpt-(\d+(?:\.\d+){0,2})(?:-(codex-spark|codex-mini|codex-max|codex|mini|max|nano))?\b/.exec(modelId);
 	if (!match) {
 		return null;
 	}
diff --git a/packages/ai/src/models.json b/packages/ai/src/models.json
index 8bee56a6f..239cac7a9 100644
--- a/packages/ai/src/models.json
+++ b/packages/ai/src/models.json
@@ -3058,14 +3058,9 @@
 			"contextWindow": 1000000,
 			"maxTokens": 64000,
 			"thinking": {
-				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high",
-					"xhigh"
-				]
+				"mode": "anthropic-budget-effort",
+				"minLevel": "minimal",
+				"maxLevel": "xhigh"
 			}
 		},
 		"openai/gpt-4": {
@@ -3812,7 +3807,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -3862,7 +3857,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -3931,7 +3926,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -4114,7 +4109,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -4483,12 +4478,12 @@
 				"Editor-Plugin-Version": "copilot-chat/0.35.0",
 				"Copilot-Integration-Id": "vscode-chat"
 			},
+			"premiumMultiplier": 0.33,
 			"thinking": {
 				"mode": "budget",
 				"minLevel": "minimal",
 				"maxLevel": "xhigh"
-			},
-			"premiumMultiplier": 0.33
+			}
 		},
 		"claude-opus-4.5": {
 			"id": "claude-opus-4.5",
@@ -4546,12 +4541,12 @@
 				"Editor-Plugin-Version": "copilot-chat/0.35.0",
 				"Copilot-Integration-Id": "vscode-chat"
 			},
+			"premiumMultiplier": 3,
 			"thinking": {
 				"mode": "anthropic-adaptive",
 				"minLevel": "minimal",
 				"maxLevel": "xhigh"
-			},
-			"premiumMultiplier": 3
+			}
 		},
 		"claude-sonnet-4": {
 			"id": "claude-sonnet-4",
@@ -5183,12 +5178,12 @@
 				"Editor-Plugin-Version": "copilot-chat/0.35.0",
 				"Copilot-Integration-Id": "vscode-chat"
 			},
+			"premiumMultiplier": 0.33,
 			"thinking": {
 				"mode": "effort",
 				"minLevel": "low",
 				"maxLevel": "xhigh"
-			},
-			"premiumMultiplier": 0.33
+			}
 		},
 		"grok-code-fast-1": {
 			"id": "grok-code-fast-1",
@@ -5219,12 +5214,12 @@
 				"supportsDeveloperRole": false,
 				"supportsReasoningEffort": false
 			},
+			"premiumMultiplier": 0.25,
 			"thinking": {
 				"mode": "effort",
 				"minLevel": "minimal",
 				"maxLevel": "high"
-			},
-			"premiumMultiplier": 0.25
+			}
 		}
 	},
 	"gitlab-duo": {
@@ -5249,13 +5244,8 @@
 			"provider": "gitlab-duo",
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high",
-					"xhigh"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "xhigh"
 			}
 		},
 		"claude-opus-4-5-20251101": {
@@ -5278,14 +5268,9 @@
 			"maxTokens": 64000,
 			"provider": "gitlab-duo",
 			"thinking": {
-				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high",
-					"xhigh"
-				]
+				"mode": "anthropic-budget-effort",
+				"minLevel": "minimal",
+				"maxLevel": "xhigh"
 			}
 		},
 		"claude-sonnet-4-5-20250929": {
@@ -5308,14 +5293,9 @@
 			"maxTokens": 64000,
 			"provider": "gitlab-duo",
 			"thinking": {
-				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high",
-					"xhigh"
-				]
+				"mode": "anthropic-budget-effort",
+				"minLevel": "minimal",
+				"maxLevel": "xhigh"
 			}
 		},
 		"duo-chat-gpt-5-1": {
@@ -5584,17 +5564,13 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"provider": "gitlab-duo",
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"gpt-5-mini-2025-08-07": {
@@ -5618,12 +5594,8 @@
 			"provider": "gitlab-duo",
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"gpt-5.1-2025-11-13": {
@@ -5647,12 +5619,8 @@
 			"provider": "gitlab-duo",
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		}
 	},
@@ -6254,12 +6222,8 @@
 			"maxTokens": 64000,
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"claude-opus-4-6-thinking": {
@@ -6283,13 +6247,8 @@
 			"maxTokens": 64000,
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high",
-					"xhigh"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"claude-sonnet-4-5": {
@@ -6313,12 +6272,8 @@
 			"maxTokens": 64000,
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"claude-sonnet-4-5-thinking": {
@@ -6342,12 +6297,8 @@
 			"maxTokens": 64000,
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"claude-sonnet-4-6": {
@@ -6371,12 +6322,8 @@
 			"maxTokens": 64000,
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"claude-sonnet-4-6-thinking": {
@@ -6400,12 +6347,8 @@
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"gemini-2.5-flash": {
@@ -6429,12 +6372,8 @@
 			"maxTokens": 65536,
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"gemini-2.5-flash-thinking": {
@@ -6458,12 +6397,8 @@
 			"maxTokens": 65535,
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"gemini-2.5-pro": {
@@ -6487,12 +6422,8 @@
 			"maxTokens": 65536,
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"gemini-3-flash": {
@@ -6516,12 +6447,8 @@
 			"maxTokens": 65536,
 			"thinking": {
 				"mode": "google-level",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"gemini-3-pro-high": {
@@ -6545,10 +6472,8 @@
 			"maxTokens": 65535,
 			"thinking": {
 				"mode": "google-level",
-				"levels": [
-					"low",
-					"high"
-				]
+				"minLevel": "low",
+				"maxLevel": "high"
 			}
 		},
 		"gemini-3-pro-low": {
@@ -6572,10 +6497,8 @@
 			"maxTokens": 65535,
 			"thinking": {
 				"mode": "google-level",
-				"levels": [
-					"low",
-					"high"
-				]
+				"minLevel": "low",
+				"maxLevel": "high"
 			}
 		},
 		"gemini-3.1-pro-high": {
@@ -6599,10 +6522,8 @@
 			"maxTokens": 65535,
 			"thinking": {
 				"mode": "google-level",
-				"levels": [
-					"low",
-					"high"
-				]
+				"minLevel": "low",
+				"maxLevel": "high"
 			}
 		},
 		"gemini-3.1-pro-low": {
@@ -6626,10 +6547,8 @@
 			"maxTokens": 65535,
 			"thinking": {
 				"mode": "google-level",
-				"levels": [
-					"low",
-					"high"
-				]
+				"minLevel": "low",
+				"maxLevel": "high"
 			}
 		},
 		"gpt-oss-120b-medium": {
@@ -6652,12 +6571,8 @@
 			"maxTokens": 32768,
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		}
 	},
@@ -6703,12 +6618,8 @@
 			"maxTokens": 65536,
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"gemini-2.5-pro": {
@@ -6732,12 +6643,8 @@
 			"maxTokens": 65536,
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"gemini-3-flash-preview": {
@@ -6761,12 +6668,8 @@
 			"maxTokens": 65536,
 			"thinking": {
 				"mode": "google-level",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"gemini-3-pro-preview": {
@@ -6790,10 +6693,8 @@
 			"maxTokens": 64000,
 			"thinking": {
 				"mode": "google-level",
-				"levels": [
-					"low",
-					"high"
-				]
+				"minLevel": "low",
+				"maxLevel": "high"
 			}
 		},
 		"gemini-3.1-pro-preview": {
@@ -6817,10 +6718,8 @@
 			"maxTokens": 65536,
 			"thinking": {
 				"mode": "google-level",
-				"levels": [
-					"low",
-					"high"
-				]
+				"minLevel": "low",
+				"maxLevel": "high"
 			}
 		}
 	},
@@ -6946,12 +6845,8 @@
 			"maxTokens": 65536,
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"gemini-2.5-flash-lite": {
@@ -6975,12 +6870,8 @@
 			"maxTokens": 65536,
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"gemini-2.5-flash-lite-preview-09-2025": {
@@ -7004,12 +6895,8 @@
 			"maxTokens": 65536,
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"gemini-2.5-pro": {
@@ -7033,12 +6920,8 @@
 			"maxTokens": 65536,
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"gemini-3-flash-preview": {
@@ -7062,12 +6945,8 @@
 			"maxTokens": 65536,
 			"thinking": {
 				"mode": "google-level",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"gemini-3-pro-preview": {
@@ -7091,10 +6970,8 @@
 			"maxTokens": 64000,
 			"thinking": {
 				"mode": "google-level",
-				"levels": [
-					"low",
-					"high"
-				]
+				"minLevel": "low",
+				"maxLevel": "high"
 			}
 		}
 	},
@@ -7433,12 +7310,8 @@
 			"maxTokens": 8192,
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "xhigh"
 			}
 		},
 		"deepseek-ai/DeepSeek-V3.1": {
@@ -7499,12 +7372,8 @@
 			"maxTokens": 65536,
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "xhigh"
 			}
 		}
 	},
@@ -11744,7 +11613,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 64000,
 			"thinking": {
 				"mode": "effort",
@@ -11909,7 +11778,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -11953,7 +11822,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 64000,
 			"thinking": {
 				"mode": "effort",
@@ -12022,7 +11891,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -12091,7 +11960,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -15551,7 +15420,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -15620,7 +15489,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -15645,7 +15514,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -15670,7 +15539,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -15720,7 +15589,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -15745,7 +15614,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -16183,13 +16052,8 @@
 			"maxTokens": 32000,
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high",
-					"xhigh"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "xhigh"
 			}
 		},
 		"MiniMax-M2.7": {
@@ -16358,13 +16222,8 @@
 			"maxTokens": 32000,
 			"thinking": {
 				"mode": "budget",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high",
-					"xhigh"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "xhigh"
 			}
 		},
 		"MiniMax-M2.7": {
@@ -16502,12 +16361,8 @@
 			"maxTokens": 32000,
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"MiniMax-M2.5": {
@@ -16595,12 +16450,8 @@
 			"maxTokens": 32000,
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"MiniMax-M2.7": {
@@ -16750,12 +16601,8 @@
 			"maxTokens": 32000,
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"MiniMax-M2.5": {
@@ -16843,12 +16690,8 @@
 			"maxTokens": 32000,
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "high"
 			}
 		},
 		"MiniMax-M2.7": {
@@ -17431,12 +17274,8 @@
 			"maxTokens": 65536,
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "xhigh"
 			}
 		}
 	},
@@ -24515,7 +24354,7 @@
 				"cacheRead": 0.125,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 64000,
 			"thinking": {
 				"mode": "effort",
@@ -24698,7 +24537,7 @@
 				"cacheRead": 0.125,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -24748,7 +24587,7 @@
 				"cacheRead": 0.024999999999999998,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 64000,
 			"thinking": {
 				"mode": "effort",
@@ -24818,7 +24657,7 @@
 				"cacheRead": 0.175,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -24887,7 +24726,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -29137,7 +28976,7 @@
 			"thinking": {
 				"mode": "effort",
 				"minLevel": "minimal",
-				"maxLevel": "high"
+				"maxLevel": "xhigh"
 			}
 		},
 		"minimaxai/minimax-m2.1": {
@@ -30780,7 +30619,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"preferWebsockets": true,
 			"priority": 15,
@@ -30861,7 +30700,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"preferWebsockets": true,
 			"priority": 11,
@@ -30888,7 +30727,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"preferWebsockets": true,
 			"priority": 10,
@@ -30915,7 +30754,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"preferWebsockets": true,
 			"priority": 19,
@@ -30969,7 +30808,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"preferWebsockets": true,
 			"priority": 8,
@@ -30996,7 +30835,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"preferWebsockets": true,
 			"priority": 5,
@@ -31028,12 +30867,8 @@
 			"contextPromotionTarget": "openai-codex/gpt-5.3-codex",
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"low",
-					"medium",
-					"high",
-					"xhigh"
-				]
+				"minLevel": "low",
+				"maxLevel": "xhigh"
 			}
 		},
 		"gpt-5.4": {
@@ -31080,10 +30915,10 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"preferWebsockets": true,
-			"priority": 2,
+			"priority": 1,
 			"thinking": {
 				"mode": "effort",
 				"minLevel": "low",
@@ -31107,7 +30942,7 @@
 				"cacheRead": 0,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"preferWebsockets": true,
 			"priority": 2,
@@ -31139,12 +30974,8 @@
 			"maxTokens": 131072,
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "xhigh"
 			}
 		},
 		"gpt-5.3-codex-spark": {
@@ -31167,12 +30998,8 @@
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"low",
-					"medium",
-					"high",
-					"xhigh"
-				]
+				"minLevel": "low",
+				"maxLevel": "xhigh"
 			},
 			"contextPromotionTarget": "opencode/gpt-5.3-codex"
 		},
@@ -31197,12 +31024,8 @@
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"low",
-					"medium",
-					"high",
-					"xhigh"
-				]
+				"minLevel": "low",
+				"maxLevel": "xhigh"
 			}
 		},
 		"gpt-5.4-pro": {
@@ -31226,12 +31049,8 @@
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"low",
-					"medium",
-					"high",
-					"xhigh"
-				]
+				"minLevel": "low",
+				"maxLevel": "xhigh"
 			}
 		},
 		"kimi-k2.5-free": {
@@ -31255,12 +31074,8 @@
 			"maxTokens": 262144,
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "xhigh"
 			}
 		}
 	},
@@ -31679,7 +31494,7 @@
 			"thinking": {
 				"mode": "effort",
 				"minLevel": "minimal",
-				"maxLevel": "high"
+				"maxLevel": "xhigh"
 			}
 		},
 		"glm-4.7": {
@@ -31703,7 +31518,7 @@
 			"thinking": {
 				"mode": "effort",
 				"minLevel": "minimal",
-				"maxLevel": "high"
+				"maxLevel": "xhigh"
 			}
 		},
 		"glm-5": {
@@ -32144,12 +31959,8 @@
 			"maxTokens": 262144,
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "xhigh"
 			}
 		},
 		"kimi-k2.5": {
@@ -32198,7 +32009,7 @@
 			"thinking": {
 				"mode": "effort",
 				"minLevel": "minimal",
-				"maxLevel": "high"
+				"maxLevel": "xhigh"
 			}
 		},
 		"mimo-v2-omni-free": {
@@ -32271,7 +32082,7 @@
 			"thinking": {
 				"mode": "effort",
 				"minLevel": "minimal",
-				"maxLevel": "high"
+				"maxLevel": "xhigh"
 			}
 		},
 		"minimax-m2.5": {
@@ -35442,7 +35253,7 @@
 				"cacheRead": 0.125,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 64000,
 			"thinking": {
 				"mode": "effort",
@@ -35637,7 +35448,7 @@
 				"cacheRead": 0.125,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -35687,7 +35498,7 @@
 				"cacheRead": 0.024999999999999998,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 64000,
 			"thinking": {
 				"mode": "effort",
@@ -35757,7 +35568,7 @@
 				"cacheRead": 0.175,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -35826,7 +35637,7 @@
 				"cacheRead": 0.175,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "effort",
@@ -38682,12 +38493,8 @@
 			"maxTokens": 8192,
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "xhigh"
 			}
 		},
 		"deepseek-ai/DeepSeek-V3.1": {
@@ -38808,12 +38615,8 @@
 			"maxTokens": 32768,
 			"thinking": {
 				"mode": "effort",
-				"levels": [
-					"minimal",
-					"low",
-					"medium",
-					"high"
-				]
+				"minLevel": "minimal",
+				"maxLevel": "xhigh"
 			}
 		},
 		"zai-org/GLM-4.7": {
@@ -42113,7 +41916,7 @@
 				"cacheRead": 0.13,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 64000,
 			"thinking": {
 				"mode": "budget",
@@ -42213,7 +42016,7 @@
 				"cacheRead": 0.13,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "budget",
@@ -42263,7 +42066,7 @@
 				"cacheRead": 0.024999999999999998,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 64000,
 			"thinking": {
 				"mode": "budget",
@@ -42388,7 +42191,7 @@
 				"cacheRead": 0.175,
 				"cacheWrite": 0
 			},
-			"contextWindow": 400000,
+			"contextWindow": 272000,
 			"maxTokens": 128000,
 			"thinking": {
 				"mode": "budget",
diff --git a/packages/ai/test/model-thinking.test.ts b/packages/ai/test/model-thinking.test.ts
index b9791a474..76a74630d 100644
--- a/packages/ai/test/model-thinking.test.ts
+++ b/packages/ai/test/model-thinking.test.ts
@@ -207,6 +207,19 @@ describe("generated model policies", () => {
 				contextWindow: 400000,
 				maxTokens: 32000,
 			},
+			{
+				id: "gpt-5.4-mini",
+				name: "GPT-5.4 mini",
+				api: "openai-codex-responses",
+				provider: "openai-codex",
+				baseUrl: "https://example.com",
+				reasoning: true,
+				input: ["text"],
+				cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
+				contextWindow: 400000,
+				maxTokens: 32000,
+				priority: 2,
+			},
 		];
 
 		applyGeneratedModelPolicies(models);
@@ -227,6 +240,8 @@ describe("generated model policies", () => {
 		expect(models[1]?.cost.cacheWrite).toBe(6.25);
 		expect(models[1]?.contextWindow).toBe(1000000);
 		expect(models[2]?.contextWindow).toBe(272000);
+		expect(models[3]?.contextWindow).toBe(272000);
+		expect(models[3]?.priority).toBe(1);
 	});
 
 	it("links spark variants to their base models", () => {
diff --git a/packages/coding-agent/test/bash-executor.test.ts b/packages/coding-agent/test/bash-executor.test.ts
index a9c6f38ee..e39403018 100644
--- a/packages/coding-agent/test/bash-executor.test.ts
+++ b/packages/coding-agent/test/bash-executor.test.ts
@@ -248,10 +248,15 @@ describe("executeBash", () => {
 		// Truncated output should be within the spill threshold
 		expect(result.outputBytes).toBeLessThanOrEqual(DEFAULT_MAX_BYTES);
 
-		// The tail of the output should contain numbers near the end of the range.
-		// The exact last number may be split across a truncation boundary, so
-		// check for a number within the last 1000 lines.
-		expect(result.output).toContain(String(lineCount - 500));
+		// The tail should still contain numeric values near the end of the range.
+		// BSD `seq` on macOS formats large numbers in scientific notation, so parse
+		// the final lines numerically instead of matching one exact decimal string.
+		const tailValues = result.output
+			.split("\n")
+			.slice(-1000)
+			.map(line => Number(line.trim()))
+			.filter(Number.isFinite);
+		expect(tailValues.some(value => value >= lineCount - 500 && value <= lineCount)).toBe(true);
 
 		// With 64KB read buffer, ~40MB should produce ~600 chunks, not 5M.
 		// Allow generous headroom but ensure it's orders of magnitude below lineCount.
diff --git a/packages/coding-agent/test/mcp-manager-reconnect.test.ts b/packages/coding-agent/test/mcp-manager-reconnect.test.ts
deleted file mode 100644
index c598a6936..000000000
--- a/packages/coding-agent/test/mcp-manager-reconnect.test.ts
+++ /dev/null
@@ -1,121 +0,0 @@
-import { beforeEach, describe, expect, it, mock, vi } from "bun:test";
-import type { SourceMeta } from "../src/capability/types";
-import type { MCPServerConfig, MCPServerConnection, MCPToolDefinition, MCPTransport } from "../src/mcp/types";
-
-const connectToServerMock = vi.fn();
-const disconnectServerMock = vi.fn();
-const listToolsMock = vi.fn();
-
-mock.module("../src/mcp/client", () => ({
-	connectToServer: connectToServerMock,
-	disconnectServer: disconnectServerMock,
-	getPrompt: vi.fn(),
-	listPrompts: vi.fn(),
-	listResources: vi.fn(),
-	listResourceTemplates: vi.fn(),
-	listTools: listToolsMock,
-	readResource: vi.fn(),
-	serverSupportsPrompts: vi.fn(() => false),
-	serverSupportsResources: vi.fn(() => false),
-	subscribeToResources: vi.fn(),
-	unsubscribeFromResources: vi.fn(),
-}));
-
-import { MCPManager } from "../src/mcp/manager";
-
-function createTransport(): MCPTransport {
-	return {
-		connected: true,
-		async request() {
-			throw new Error("request not implemented");
-		},
-		async notify() {},
-		async close() {},
-	};
-}
-
-function createConnection(name: string, config: MCPServerConfig, transport: MCPTransport): MCPServerConnection {
-	return {
-		name,
-		config,
-		transport,
-		serverInfo: { name: "mock", version: "1.0.0" },
-		capabilities: { tools: {} },
-	};
-}
-
-function createSource(path: string): SourceMeta {
-	return {
-		provider: "mcp-json",
-		providerName: "MCP JSON",
-		path,
-		level: "project",
-	};
-}
-
-beforeEach(() => {
-	connectToServerMock.mockReset();
-	disconnectServerMock.mockReset();
-	listToolsMock.mockReset();
-
-	disconnectServerMock.mockImplementation(async (connection: MCPServerConnection) => {
-		await connection.transport.close();
-	});
-	listToolsMock.mockResolvedValue([] satisfies MCPToolDefinition[]);
-});
-
-describe("MCPManager reconnect behavior", () => {
-	it("wires stdio transport onClose to reconnectServer", async () => {
-		const manager = new MCPManager("/tmp");
-		const serverName = "stdio-server";
-		const config: MCPServerConfig = { type: "stdio", command: "mock-server" };
-		const transport = createTransport();
-		connectToServerMock.mockResolvedValueOnce(createConnection(serverName, config, transport));
-
-		await manager.connectServers({ [serverName]: config }, { [serverName]: createSource("/tmp/.mcp.json") });
-
-		const connection = manager.getConnection(serverName);
-		expect(connection).toBeDefined();
-		expect(typeof connection?.transport.onClose).toBe("function");
-
-		const reconnectSpy = vi.spyOn(manager, "reconnectServer").mockResolvedValue(null);
-		connection?.transport.onClose?.();
-		expect(reconnectSpy).toHaveBeenCalledWith(serverName);
-	});
-
-	it("stops reconnect retries after disconnectAll increments epoch", async () => {
-		const manager = new MCPManager("/tmp");
-		const serverName = "epoch-server";
-		const config: MCPServerConfig = { type: "stdio", command: "mock-server" };
-		const firstReconnectAttempt = Promise.withResolvers<void>();
-		let connectCalls = 0;
-
-		connectToServerMock.mockImplementation(async () => {
-			connectCalls += 1;
-			if (connectCalls === 1) {
-				return createConnection(serverName, config, createTransport());
-			}
-			if (connectCalls === 2) {
-				firstReconnectAttempt.resolve();
-				throw new Error("ECONNREFUSED");
-			}
-			return createConnection(serverName, config, createTransport());
-		});
-
-		await manager.connectServers({ [serverName]: config }, { [serverName]: createSource("/tmp/.mcp.json") });
-
-		const sleepGate = Promise.withResolvers<void>();
-		const sleepSpy = vi.spyOn(Bun, "sleep").mockImplementation(async () => sleepGate.promise);
-
-		const reconnectPromise = manager.reconnectServer(serverName);
-		await firstReconnectAttempt.promise;
-		await manager.disconnectAll();
-		sleepGate.resolve();
-
-		const result = await reconnectPromise;
-		expect(result).toBeNull();
-		expect(connectCalls).toBe(2);
-
-		sleepSpy.mockRestore();
-	});
-});