fix(ai): prevent removed xAI models regenerating, closes #6736

packages/ai/test/context-overflow.test.ts

@@ -262,7 +262,7 @@ describe("Context overflow error handling", () => {
 	// =============================================================================
 
 	describe.skipIf(!process.env.XAI_API_KEY)("xAI", () => {
-		it("grok-3-fast - should detect overflow via isContextOverflow", async () => {
+		it("grok-4.3 - should detect overflow via isContextOverflow", async () => {
 			const model = getModel("xai", "grok-4.3");
 			const result = await testContextOverflow(model, process.env.XAI_API_KEY!);
 			logResult(result);

packages/ai/test/cross-provider-handoff.test.ts

@@ -79,7 +79,7 @@ const PROVIDER_MODEL_PAIRS: ProviderModelPair[] = [
 		label: "bedrock-claude-sonnet-4-5",
 	},
 	// xAI
-	{ provider: "xai", model: "grok-code-fast-1", label: "xai-grok-code-fast-1" },
+	{ provider: "xai", model: "grok-4.3", label: "xai-grok-4.3" },
 	// Cerebras
 	{ provider: "cerebras", model: "zai-glm-4.7", label: "cerebras-zai-glm-4.7" },
 	// Cloudflare Workers AI

packages/ai/test/stream.test.ts

@@ -542,7 +542,7 @@ describe("Generate E2E Tests", () => {
 		});
 	});
 
-	describe.skipIf(!process.env.XAI_API_KEY)("xAI Provider (grok-code-fast-1 via OpenAI Completions)", () => {
+	describe.skipIf(!process.env.XAI_API_KEY)("xAI Provider (grok-4.3 via OpenAI Completions)", () => {
 		const llm = getModel("xai", "grok-4.3");
 
 		it("should complete basic text generation", { retry: 3 }, async () => {

packages/ai/test/total-tokens.test.ts

@@ -244,22 +244,18 @@ describe("totalTokens field", () => {
 	// =========================================================================
 
 	describe.skipIf(!process.env.XAI_API_KEY)("xAI", () => {
-		it(
-			"grok-3-fast - should return totalTokens equal to sum of components",
-			{ retry: 3, timeout: 60000 },
-			async () => {
-				const llm = getModel("xai", "grok-4.3");
+		it("grok-4.3 - should return totalTokens equal to sum of components", { retry: 3, timeout: 60000 }, async () => {
+			const llm = getModel("xai", "grok-4.3");
 
-				console.log(`\nxAI / ${llm.id}:`);
-				const { first, second } = await testTotalTokensWithCache(llm, { apiKey: process.env.XAI_API_KEY });
+			console.log(`\nxAI / ${llm.id}:`);
+			const { first, second } = await testTotalTokensWithCache(llm, { apiKey: process.env.XAI_API_KEY });
 
-				logUsage("First request", first);
-				logUsage("Second request", second);
+			logUsage("First request", first);
+			logUsage("Second request", second);
 
-				assertTotalTokensEqualsComponents(first);
-				assertTotalTokensEqualsComponents(second);
-			},
-		);
+			assertTotalTokensEqualsComponents(first);
+			assertTotalTokensEqualsComponents(second);
+		});
 	});
 
 	// =========================================================================

packages/ai/test/xai-responses.test.ts

@@ -60,6 +60,18 @@ describe("xAI Responses provider", () => {
 		vi.restoreAllMocks();
 	});
 
+	it("excludes retired and redundant models from the built-in catalog", () => {
+		for (const modelId of [
+			"grok-3",
+			"grok-3-fast",
+			"grok-4.20-0309-non-reasoning",
+			"grok-4.20-0309-reasoning",
+			"grok-code-fast-1",
+		]) {
+			expect(Object.keys(XAI_MODELS)).not.toContain(modelId);
+		}
+	});
+
 	it("uses Responses with low/medium/high efforts only for Grok 4.5", () => {
 		expect(XAI_MODELS["grok-4.5"].api).toBe("openai-responses");
 		expect(getSupportedThinkingLevels(XAI_MODELS["grok-4.5"])).toEqual(["low", "medium", "high"]);