fix(ai): Fix a configuration bug with Opus 4.7 adaptive thinking (#3286)

package-lock.json

@@ -64,9 +64,9 @@
 			}
 		},
 		"node_modules/@anthropic-ai/sdk": {
-			"version": "0.73.0",
+			"version": "0.90.0",
-			"resolved": "https://registry.npmjs.org/@anthropic-ai/sdk/-/sdk-0.73.0.tgz",
+			"resolved": "https://registry.npmjs.org/@anthropic-ai/sdk/-/sdk-0.90.0.tgz",
-			"integrity": "sha512-URURVzhxXGJDGUGFunIOtBlSl7KWvZiAAKY/ttTkZAkXT9bTPqdk2eK0b8qqSxXpikh3QKPnPYpiyX98zf5ebw==",
+			"integrity": "sha512-MzZtPabJF1b0FTDl6Z6H5ljphPwACLGP13lu8MTiB8jXaW/YXlpOp+Po2cVou3MPM5+f5toyLnul9whKCy7fBg==",
 			"license": "MIT",
 			"dependencies": {
 				"json-schema-to-ts": "^3.1.1"
@@ -8714,8 +8714,8 @@
 			"version": "0.67.4",
 			"license": "MIT",
 			"dependencies": {
-				"@anthropic-ai/sdk": "^0.73.0",
+				"@anthropic-ai/sdk": "^0.90.0",
-				"@aws-sdk/client-bedrock-runtime": "^3.983.0",
+				"@aws-sdk/client-bedrock-runtime": "^3.1030.0",
 				"@google/genai": "^1.40.0",
 				"@mistralai/mistralai": "1.14.1",
 				"@sinclair/typebox": "^0.34.41",

packages/ai/package.json

@@ -72,8 +72,8 @@
 		"prepublishOnly": "npm run clean && npm run build"
 	},
 	"dependencies": {
-		"@anthropic-ai/sdk": "^0.73.0",
+		"@anthropic-ai/sdk": "^0.90.0",
-		"@aws-sdk/client-bedrock-runtime": "^3.983.0",
+		"@aws-sdk/client-bedrock-runtime": "^3.1030.0",
 		"@google/genai": "^1.40.0",
 		"@mistralai/mistralai": "1.14.1",
 		"@sinclair/typebox": "^0.34.41",

packages/ai/src/models.ts

@@ -50,14 +50,19 @@ export function calculateCost<TApi extends Api>(model: Model<TApi>, usage: Usage
  *
  * Supported today:
  * - GPT-5.2 / GPT-5.3 / GPT-5.4 model families
- * - Opus 4.6 models (xhigh maps to adaptive effort "max" on Anthropic-compatible providers)
+ * - Opus 4.6+ models (xhigh maps to adaptive effort "max" on Anthropic-compatible providers)
  */
 export function supportsXhigh<TApi extends Api>(model: Model<TApi>): boolean {
 	if (model.id.includes("gpt-5.2") || model.id.includes("gpt-5.3") || model.id.includes("gpt-5.4")) {
 		return true;
 	}
 
-	if (model.id.includes("opus-4-6") || model.id.includes("opus-4.6")) {
+	if (
+		model.id.includes("opus-4-6") ||
+		model.id.includes("opus-4.6") ||
+		model.id.includes("opus-4-7") ||
+		model.id.includes("opus-4.7")
+	) {
 		return true;
 	}
 

packages/ai/src/providers/amazon-bedrock.ts

@@ -423,12 +423,14 @@ function handleContentBlockStop(
 }
 
 /**
- * Check if the model supports adaptive thinking (Opus 4.6 and Sonnet 4.6).
+ * Check if the model supports adaptive thinking (Opus 4.6+, Sonnet 4.6).
  */
 function supportsAdaptiveThinking(modelId: string): boolean {
 	return (
 		modelId.includes("opus-4-6") ||
 		modelId.includes("opus-4.6") ||
+		modelId.includes("opus-4-7") ||
+		modelId.includes("opus-4.7") ||
 		modelId.includes("sonnet-4-6") ||
 		modelId.includes("sonnet-4.6")
 	);
@@ -437,7 +439,7 @@ function supportsAdaptiveThinking(modelId: string): boolean {
 function mapThinkingLevelToEffort(
 	level: SimpleStreamOptions["reasoning"],
 	modelId: string,
-): "low" | "medium" | "high" | "max" {
+): "low" | "medium" | "high" | "xhigh" | "max" {
 	switch (level) {
 		case "minimal":
 		case "low":
@@ -447,7 +449,13 @@ function mapThinkingLevelToEffort(
 		case "high":
 			return "high";
 		case "xhigh":
-			return modelId.includes("opus-4-6") || modelId.includes("opus-4.6") ? "max" : "high";
+			if (modelId.includes("opus-4-6") || modelId.includes("opus-4.6")) {
+				return "max";
+			}
+			if (modelId.includes("opus-4-7") || modelId.includes("opus-4.7")) {
+				return "xhigh";
+			}
+			return "high";
 		default:
 			return "high";
 	}

packages/ai/src/providers/anthropic.ts

@@ -153,7 +153,7 @@ function convertContentBlocks(content: (TextContent | ImageContent)[]):
 	return blocks;
 }
 
-export type AnthropicEffort = "low" | "medium" | "high" | "max";
+export type AnthropicEffort = "low" | "medium" | "high" | "xhigh" | "max";
 
 export interface AnthropicOptions extends StreamOptions {
 	/**
@@ -168,9 +168,10 @@ export interface AnthropicOptions extends StreamOptions {
 	 */
 	thinkingBudgetTokens?: number;
 	/**
-	 * Effort level for adaptive thinking (Opus 4.6 and Sonnet 4.6).
+	 * Effort level for adaptive thinking (Opus 4.6+ and Sonnet 4.6).
 	 * Controls how much thinking Claude allocates:
 	 * - "max": Always thinks with no constraints (Opus 4.6 only)
+	 * - "xhigh": Highest reasoning level (Opus 4.7)
 	 * - "high": Always thinks, deep reasoning (default)
 	 * - "medium": Moderate thinking, may skip for simple queries
 	 * - "low": Minimal thinking, skips for simple tasks
@@ -448,13 +449,15 @@ export const streamAnthropic: StreamFunction<"anthropic-messages", AnthropicOpti
 };
 
 /**
- * Check if a model supports adaptive thinking (Opus 4.6 and Sonnet 4.6)
+ * Check if a model supports adaptive thinking (Opus 4.6+, Sonnet 4.6)
  */
 function supportsAdaptiveThinking(modelId: string): boolean {
-	// Opus 4.6 and Sonnet 4.6 model IDs (with or without date suffix)
+	// Adaptive-thinking model IDs (with or without date suffix)
 	return (
 		modelId.includes("opus-4-6") ||
 		modelId.includes("opus-4.6") ||
+		modelId.includes("opus-4-7") ||
+		modelId.includes("opus-4.7") ||
 		modelId.includes("sonnet-4-6") ||
 		modelId.includes("sonnet-4.6")
 	);
@@ -462,7 +465,7 @@ function supportsAdaptiveThinking(modelId: string): boolean {
 
 /**
  * Map ThinkingLevel to Anthropic effort levels for adaptive thinking.
- * Note: effort "max" is only valid on Opus 4.6.
+ * Note: effort "max" is only valid on Opus 4.6, while Opus 4.7 supports "xhigh".
  */
 function mapThinkingLevelToEffort(level: SimpleStreamOptions["reasoning"], modelId: string): AnthropicEffort {
 	switch (level) {
@@ -475,7 +478,13 @@ function mapThinkingLevelToEffort(level: SimpleStreamOptions["reasoning"], model
 		case "high":
 			return "high";
 		case "xhigh":
-			return modelId.includes("opus-4-6") || modelId.includes("opus-4.6") ? "max" : "high";
+			if (modelId.includes("opus-4-6") || modelId.includes("opus-4.6")) {
+				return "max";
+			}
+			if (modelId.includes("opus-4-7") || modelId.includes("opus-4.7")) {
+				return "xhigh";
+			}
+			return "high";
 		default:
 			return "high";
 	}

packages/ai/test/anthropic-opus-4-7-smoke.test.ts

@@ -0,0 +1,72 @@
+import { describe, expect, it } from "vitest";
+import { getModel } from "../src/models.js";
+import { streamSimple } from "../src/stream.js";
+import type { Context } from "../src/types.js";
+
+interface AnthropicThinkingPayload {
+	thinking?: { type: string };
+	output_config?: { effort?: string };
+}
+
+function makeContext(): Context {
+	return {
+		systemPrompt: "You are a precise assistant. Follow the user's instructions exactly.",
+		messages: [
+			{
+				role: "user",
+				content:
+					"Compute 48291 * 7317 and 90844 - 17729, add the results, and determine whether the sum is divisible by 11. Reply with exactly this format and nothing else: sum=<sum>; divisibleBy11=<yes|no>",
+				timestamp: Date.now(),
+			},
+		],
+	};
+}
+
+describe.skipIf(!process.env.ANTHROPIC_API_KEY)("Anthropic Opus 4.7 smoke", () => {
+	it("streams Claude Opus 4.7 with reasoning enabled", { retry: 2, timeout: 30000 }, async () => {
+		const model = getModel("anthropic", "claude-opus-4-7");
+		let capturedPayload: AnthropicThinkingPayload | undefined;
+		const s = streamSimple(model, makeContext(), {
+			reasoning: "high",
+			maxTokens: 1024,
+			onPayload: (payload) => {
+				capturedPayload = payload as AnthropicThinkingPayload;
+				return payload;
+			},
+		});
+
+		let sawThinking = false;
+
+		for await (const event of s) {
+			if (event.type === "thinking_start" || event.type === "thinking_delta" || event.type === "thinking_end") {
+				sawThinking = true;
+			}
+		}
+
+		const response = await s.result();
+		expect(response.stopReason, response.errorMessage).toBe("stop");
+		expect(response.errorMessage).toBeFalsy();
+		expect(capturedPayload?.thinking).toEqual({ type: "adaptive" });
+		expect(capturedPayload?.output_config).toEqual({ effort: "high" });
+		expect(sawThinking).toBe(true);
+
+		const thinkingBlock = response.content.find((block) => block.type === "thinking");
+		expect(thinkingBlock?.type).toBe("thinking");
+		if (!thinkingBlock || thinkingBlock.type !== "thinking") {
+			throw new Error("Expected thinking block from Claude Opus 4.7");
+		}
+		expect(typeof thinkingBlock.thinkingSignature).toBe("string");
+		const thinkingSignature = thinkingBlock.thinkingSignature;
+		if (!thinkingSignature) {
+			throw new Error("Expected thinking signature from Claude Opus 4.7");
+		}
+		expect(thinkingSignature.length).toBeGreaterThan(0);
+
+		const text = response.content
+			.filter((block) => block.type === "text")
+			.map((block) => block.text)
+			.join("")
+			.trim();
+		expect(text).toBe("sum=353418362; divisibleBy11=yes");
+	});
+});

packages/ai/test/anthropic-thinking-disable.test.ts

@@ -1,7 +1,7 @@
 import { describe, expect, it } from "vitest";
 import { getModel } from "../src/models.js";
 import { streamSimple } from "../src/stream.js";
-import type { Context, Model } from "../src/types.js";
+import type { Context, Model, SimpleStreamOptions } from "../src/types.js";
 
 interface AnthropicThinkingPayload {
 	thinking?: { type: string; budget_tokens?: number };
@@ -14,7 +14,10 @@ function makePayloadCaptureContext(): Context {
 	};
 }
 
-async function capturePayload(model: Model<"anthropic-messages">): Promise<AnthropicThinkingPayload> {
+async function capturePayload(
+	model: Model<"anthropic-messages">,
+	options?: SimpleStreamOptions,
+): Promise<AnthropicThinkingPayload> {
 	let capturedPayload: AnthropicThinkingPayload | undefined;
 	const payloadCaptureModel: Model<"anthropic-messages"> = {
 		...model,
@@ -22,6 +25,7 @@ async function capturePayload(model: Model<"anthropic-messages">): Promise<Anthr
 	};
 
 	const s = streamSimple(payloadCaptureModel, makePayloadCaptureContext(), {
+		...options,
 		apiKey: "fake-key",
 		onPayload: (payload) => {
 			capturedPayload = payload as AnthropicThinkingPayload;
@@ -113,6 +117,27 @@ describe("Anthropic thinking disable payload", () => {
 		expect(payload.thinking).toEqual({ type: "disabled" });
 		expect(payload.output_config).toBeUndefined();
 	});
+
+	it("sends thinking.type=disabled for Claude Opus 4.7 when thinking is off", async () => {
+		const payload = await capturePayload(getModel("anthropic", "claude-opus-4-7"));
+
+		expect(payload.thinking).toEqual({ type: "disabled" });
+		expect(payload.output_config).toBeUndefined();
+	});
+
+	it("uses adaptive thinking for Claude Opus 4.7 when reasoning is enabled", async () => {
+		const payload = await capturePayload(getModel("anthropic", "claude-opus-4-7"), { reasoning: "high" });
+
+		expect(payload.thinking).toEqual({ type: "adaptive" });
+		expect(payload.output_config).toEqual({ effort: "high" });
+	});
+
+	it("maps xhigh reasoning to effort=xhigh for Claude Opus 4.7", async () => {
+		const payload = await capturePayload(getModel("anthropic", "claude-opus-4-7"), { reasoning: "xhigh" });
+
+		expect(payload.thinking).toEqual({ type: "adaptive" });
+		expect(payload.output_config).toEqual({ effort: "xhigh" });
+	});
 });
 
 describe.skipIf(!process.env.ANTHROPIC_API_KEY)("Anthropic thinking disable E2E", () => {

packages/ai/test/bedrock-thinking-payload.test.ts

@@ -0,0 +1,78 @@
+import { describe, expect, it } from "vitest";
+import { getModel } from "../src/models.js";
+import { streamBedrock } from "../src/providers/amazon-bedrock.js";
+import type { Context, Model, SimpleStreamOptions } from "../src/types.js";
+
+interface BedrockThinkingPayload {
+	additionalModelRequestFields?: {
+		thinking?: { type: string; budget_tokens?: number };
+		output_config?: { effort?: string };
+		anthropic_beta?: string[];
+	};
+}
+
+function makeContext(): Context {
+	return {
+		messages: [{ role: "user", content: "Hello", timestamp: Date.now() }],
+	};
+}
+
+async function capturePayload(
+	model: Model<"bedrock-converse-stream">,
+	options?: SimpleStreamOptions,
+): Promise<BedrockThinkingPayload> {
+	let capturedPayload: BedrockThinkingPayload | undefined;
+	const s = streamBedrock(model, makeContext(), {
+		...options,
+		reasoning: options?.reasoning ?? "high",
+		signal: AbortSignal.abort(),
+		onPayload: (payload) => {
+			capturedPayload = payload as BedrockThinkingPayload;
+			return payload;
+		},
+	});
+
+	for await (const event of s) {
+		if (event.type === "error") {
+			break;
+		}
+	}
+
+	if (!capturedPayload) {
+		throw new Error("Expected Bedrock payload to be captured before request abort");
+	}
+
+	return capturedPayload;
+}
+
+describe("Bedrock thinking payload", () => {
+	it("uses adaptive thinking for Claude Opus 4.7 when reasoning is enabled", async () => {
+		const baseModel = getModel("amazon-bedrock", "global.anthropic.claude-opus-4-6-v1");
+		const model: Model<"bedrock-converse-stream"> = {
+			...baseModel,
+			id: "global.anthropic.claude-opus-4-7-v1",
+			name: "Claude Opus 4.7 (Global)",
+		};
+
+		const payload = await capturePayload(model);
+
+		expect(payload.additionalModelRequestFields?.thinking).toEqual({ type: "adaptive" });
+		expect(payload.additionalModelRequestFields?.output_config).toEqual({ effort: "high" });
+		expect(payload.additionalModelRequestFields?.anthropic_beta).toBeUndefined();
+	});
+
+	it("maps xhigh reasoning to effort=xhigh for Claude Opus 4.7", async () => {
+		const baseModel = getModel("amazon-bedrock", "global.anthropic.claude-opus-4-6-v1");
+		const model: Model<"bedrock-converse-stream"> = {
+			...baseModel,
+			id: "global.anthropic.claude-opus-4-7-v1",
+			name: "Claude Opus 4.7 (Global)",
+		};
+
+		const payload = await capturePayload(model, { reasoning: "xhigh" });
+
+		expect(payload.additionalModelRequestFields?.thinking).toEqual({ type: "adaptive" });
+		expect(payload.additionalModelRequestFields?.output_config).toEqual({ effort: "xhigh" });
+		expect(payload.additionalModelRequestFields?.anthropic_beta).toBeUndefined();
+	});
+});

packages/ai/test/supports-xhigh.test.ts

@@ -8,6 +8,12 @@ describe("supportsXhigh", () => {
 		expect(supportsXhigh(model!)).toBe(true);
 	});
 
+	it("returns true for Anthropic Opus 4.7 on anthropic-messages API", () => {
+		const model = getModel("anthropic", "claude-opus-4-7");
+		expect(model).toBeDefined();
+		expect(supportsXhigh(model!)).toBe(true);
+	});
+
 	it("returns false for non-Opus Anthropic models", () => {
 		const model = getModel("anthropic", "claude-sonnet-4-5");
 		expect(model).toBeDefined();