diff --git a/packages/ai/test/context-overflow.test.ts b/packages/ai/test/context-overflow.test.ts
index ab5fd9274..510dc5cd2 100644
--- a/packages/ai/test/context-overflow.test.ts
+++ b/packages/ai/test/context-overflow.test.ts
@@ -354,8 +354,8 @@ describe("Context overflow error handling", () => {
 	// =============================================================================
 
 	describe.skipIf(!process.env.ZAI_API_KEY)("z.ai", () => {
-		it("glm-4.5-air - should detect overflow via isContextOverflow when z.ai reports it", async () => {
-			const model = getModel("zai", "glm-4.5-air");
+		it("glm-5.2 - should detect overflow via isContextOverflow when z.ai reports it", async () => {
+			const model = getModel("zai", "glm-5.2");
 			const result = await testContextOverflow(model, process.env.ZAI_API_KEY!);
 			logResult(result);
 
diff --git a/packages/ai/test/empty.test.ts b/packages/ai/test/empty.test.ts
index 0a0705f51..3f996b37d 100644
--- a/packages/ai/test/empty.test.ts
+++ b/packages/ai/test/empty.test.ts
@@ -387,7 +387,7 @@ describe("AI Providers Empty Message Tests", () => {
 	});
 
 	describe.skipIf(!process.env.ZAI_API_KEY)("zAI Provider Empty Messages", () => {
-		const llm = getModel("zai", "glm-4.5-air");
+		const llm = getModel("zai", "glm-5.2");
 
 		it("should handle empty content array", { retry: 3, timeout: 30000 }, async () => {
 			await testEmptyMessage(llm);
diff --git a/packages/ai/test/openai-completions-tool-choice.test.ts b/packages/ai/test/openai-completions-tool-choice.test.ts
index e1aa210c6..0e1ce0e36 100644
--- a/packages/ai/test/openai-completions-tool-choice.test.ts
+++ b/packages/ai/test/openai-completions-tool-choice.test.ts
@@ -252,7 +252,7 @@ describe("openai-completions tool_choice", () => {
 	});
 
 	it("enables tool_stream for supported z.ai models with tools", async () => {
-		const model = getModel("zai", "glm-5.1")!;
+		const model = getModel("zai", "glm-5.2")!;
 		const tools: Tool[] = [
 			{
 				name: "ping",
@@ -289,11 +289,10 @@ describe("openai-completions tool_choice", () => {
 	});
 
 	it("stores z.ai tool_stream support in model compat metadata", () => {
-		expect(getModel("zai", "glm-5.1")?.compat?.zaiToolStream).toBe(true);
 		expect(getModel("zai", "glm-4.7")?.compat?.zaiToolStream).toBe(true);
 		expect(getModel("zai", "glm-4.7")?.compat?.zaiToolStream).toBe(true);
 		expect(getModel("zai", "glm-5-turbo")?.compat?.zaiToolStream).toBe(true);
-		expect(getModel("zai", "glm-4.5-air")?.compat?.zaiToolStream).toBeUndefined();
+		expect(getModel("zai", "glm-5.2")?.compat?.zaiToolStream).toBe(true);
 	});
 
 	it("stores z.ai GLM-5.2 effort metadata", () => {
@@ -436,45 +435,8 @@ describe("openai-completions tool_choice", () => {
 		expect(params.reasoning_effort).toBeUndefined();
 	});
 
-	it("omits tool_stream for unsupported z.ai models", async () => {
-		const model = getModel("zai", "glm-4.5-air")!;
-		const tools: Tool[] = [
-			{
-				name: "ping",
-				description: "Ping tool",
-				parameters: Type.Object({
-					ok: Type.Boolean(),
-				}),
-			},
-		];
-		let payload: unknown;
-
-		await streamSimple(
-			model,
-			{
-				messages: [
-					{
-						role: "user",
-						content: "Call ping with ok=true",
-						timestamp: Date.now(),
-					},
-				],
-				tools,
-			},
-			{
-				apiKey: "test",
-				onPayload: (params: unknown) => {
-					payload = params;
-				},
-			},
-		).result();
-
-		const params = (payload ?? mockState.lastParams) as { tool_stream?: boolean };
-		expect(params.tool_stream).toBeUndefined();
-	});
-
 	it("respects explicit z.ai tool_stream compat override", async () => {
-		const baseModel = getModel("zai", "glm-4.5-air")!;
+		const baseModel = getModel("zai", "glm-5.2")!;
 		const model = {
 			...baseModel,
 			compat: {
@@ -518,7 +480,7 @@ describe("openai-completions tool_choice", () => {
 	});
 
 	it("omits tool_stream when no tools are provided", async () => {
-		const model = getModel("zai", "glm-5.1")!;
+		const model = getModel("zai", "glm-5.2")!;
 		let payload: unknown;
 
 		await streamSimple(
@@ -560,7 +522,7 @@ describe("openai-completions tool_choice", () => {
 			},
 		];
 
-		const model = getModel("zai", "glm-5.1")!;
+		const model = getModel("zai", "glm-5.2")!;
 		const response = await streamSimple(
 			model,
 			{
@@ -1467,7 +1429,7 @@ describe("openai-completions tool_choice", () => {
 	});
 
 	it("sends max_tokens for Z.AI completions models", async () => {
-		const cases = [getModel("zai", "glm-5.1")!, getModel("zai", "glm-5.2")!] as const;
+		const cases = [getModel("zai", "glm-5-turbo")!, getModel("zai", "glm-5.2")!] as const;
 
 		for (const model of cases) {
 			expect(model.compat?.maxTokensField).toBe("max_tokens");
diff --git a/packages/ai/test/stream.test.ts b/packages/ai/test/stream.test.ts
index 232df7a08..18a1db8a4 100644
--- a/packages/ai/test/stream.test.ts
+++ b/packages/ai/test/stream.test.ts
@@ -919,8 +919,8 @@ describe("Generate E2E Tests", () => {
 		},
 	);
 
-	describe.skipIf(!process.env.ZAI_API_KEY)("zAI Provider (glm-5.1 via OpenAI Completions)", () => {
-		const llm = getModel("zai", "glm-5.1");
+	describe.skipIf(!process.env.ZAI_API_KEY)("zAI Provider (glm-5.2 via OpenAI Completions)", () => {
+		const llm = getModel("zai", "glm-5.2");
 
 		it("should complete basic text generation", { retry: 3 }, async () => {
 			await basicTextGeneration(llm);
diff --git a/packages/ai/test/tokens.test.ts b/packages/ai/test/tokens.test.ts
index 665e90099..bea1ff1e3 100644
--- a/packages/ai/test/tokens.test.ts
+++ b/packages/ai/test/tokens.test.ts
@@ -194,7 +194,7 @@ describe("Token Statistics on Abort", () => {
 	});
 
 	describe.skipIf(!process.env.ZAI_API_KEY)("zAI Provider", () => {
-		const llm = getModel("zai", "glm-4.5-air");
+		const llm = getModel("zai", "glm-5.2");
 
 		it("should include token stats when aborted mid-stream", { retry: 3, timeout: 30000 }, async () => {
 			await testTokensOnAbort(llm);
diff --git a/packages/ai/test/tool-call-without-result.test.ts b/packages/ai/test/tool-call-without-result.test.ts
index f089e7a89..625d48f00 100644
--- a/packages/ai/test/tool-call-without-result.test.ts
+++ b/packages/ai/test/tool-call-without-result.test.ts
@@ -199,7 +199,7 @@ describe("Tool Call Without Result Tests", () => {
 	});
 
 	describe.skipIf(!process.env.ZAI_API_KEY)("zAI Provider", () => {
-		const model = getModel("zai", "glm-4.5-air");
+		const model = getModel("zai", "glm-5.2");
 
 		it("should filter out tool calls without corresponding tool results", { retry: 3, timeout: 30000 }, async () => {
 			await testToolCallWithoutResult(model);
diff --git a/packages/ai/test/total-tokens.test.ts b/packages/ai/test/total-tokens.test.ts
index 00ba4ab2f..535c7e299 100644
--- a/packages/ai/test/total-tokens.test.ts
+++ b/packages/ai/test/total-tokens.test.ts
@@ -400,22 +400,18 @@ describe("totalTokens field", () => {
 	// =========================================================================
 
 	describe.skipIf(!process.env.ZAI_API_KEY)("z.ai", () => {
-		it(
-			"glm-4.5-air - should return totalTokens equal to sum of components",
-			{ retry: 3, timeout: 60000 },
-			async () => {
-				const llm = getModel("zai", "glm-4.5-air");
+		it("glm-5.2 - should return totalTokens equal to sum of components", { retry: 3, timeout: 60000 }, async () => {
+			const llm = getModel("zai", "glm-5.2");
 
-				console.log(`\nz.ai / ${llm.id}:`);
-				const { first, second } = await testTotalTokensWithCache(llm, { apiKey: process.env.ZAI_API_KEY });
+			console.log(`\nz.ai / ${llm.id}:`);
+			const { first, second } = await testTotalTokensWithCache(llm, { apiKey: process.env.ZAI_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);
+		});
 	});
 
 	// =========================================================================
diff --git a/packages/ai/test/unicode-surrogate.test.ts b/packages/ai/test/unicode-surrogate.test.ts
index 89f9602e0..eb1f595f6 100644
--- a/packages/ai/test/unicode-surrogate.test.ts
+++ b/packages/ai/test/unicode-surrogate.test.ts
@@ -563,7 +563,7 @@ describe("AI Providers Unicode Surrogate Pair Tests", () => {
 	});
 
 	describe.skipIf(!process.env.ZAI_API_KEY)("zAI Provider Unicode Handling", () => {
-		const llm = getModel("zai", "glm-4.5-air");
+		const llm = getModel("zai", "glm-5.2");
 
 		it("should handle emoji in tool results", { retry: 3, timeout: 30000 }, async () => {
 			await testEmojiInToolResults(llm);