diff --git a/packages/ai/package.json b/packages/ai/package.json
index 9a54de2fb..48cb17c59 100644
--- a/packages/ai/package.json
+++ b/packages/ai/package.json
@@ -62,7 +62,9 @@
 		"clean": "shx rm -rf dist",
 		"generate-models": "node scripts/generate-models.ts",
 		"generate-image-models": "node scripts/generate-image-models.ts",
-		"build": "npm run generate-models && npm run generate-image-models && tsgo -p tsconfig.build.json",
+		"generate": "npm run generate-models && npm run generate-image-models",
+		"build": "tsgo -p tsconfig.build.json",
+		"check:models-drift": "npm run generate && git diff --exit-code -- src/models.generated.ts src/image-models.generated.ts",
 		"test": "vitest --run",
 		"prepublishOnly": "npm run clean && npm run build"
 	},
diff --git a/packages/ai/src/providers/openai-responses.ts b/packages/ai/src/providers/openai-responses.ts
index 9afeff290..b5cb69c4a 100644
--- a/packages/ai/src/providers/openai-responses.ts
+++ b/packages/ai/src/providers/openai-responses.ts
@@ -40,6 +40,7 @@ function resolveCacheRetention(cacheRetention?: CacheRetention): CacheRetention
 function getCompat(model: Model<"openai-responses">): Required<OpenAIResponsesCompat> {
 	return {
 		supportsDeveloperRole: model.compat?.supportsDeveloperRole ?? true,
+		supportsReasoningEffort: model.compat?.supportsReasoningEffort ?? true,
 		sendSessionIdHeader: model.compat?.sendSessionIdHeader ?? true,
 		supportsLongCacheRetention: model.compat?.supportsLongCacheRetention ?? true,
 	};
diff --git a/packages/ai/src/types.ts b/packages/ai/src/types.ts
index 897e87d96..eab4e8b0e 100644
--- a/packages/ai/src/types.ts
+++ b/packages/ai/src/types.ts
@@ -423,6 +423,8 @@ export interface OpenAICompletionsCompat {
 export interface OpenAIResponsesCompat {
 	/** Whether the provider supports the `developer` role (vs `system`). Default: true. */
 	supportsDeveloperRole?: boolean;
+	/** Whether the provider supports `reasoning_effort`. Default: true. */
+	supportsReasoningEffort?: boolean;
 	/** Whether to send the OpenAI `session_id` cache-affinity header from `options.sessionId` when caching is enabled. Default: true. */
 	sendSessionIdHeader?: boolean;
 	/** Whether the provider supports `prompt_cache_retention: "24h"`. Default: true. */