feat(models): adaptive thinking for Opus 4.6 #2550
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| import { describe, expect, test } from "vitest"; | ||
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| import { prepareRequestBody } from "./prepare-request-body.js"; | ||
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| interface AdaptiveThinkingBody { | ||
| thinking?: { type: "adaptive" | "enabled"; budget_tokens?: number }; | ||
| output_config?: { | ||
| effort?: "low" | "medium" | "high" | "xhigh" | "max"; | ||
| }; | ||
| } | ||
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| // Regression test for adaptive thinking. Anthropic models with | ||
| // `reasoningMode: "adaptive"` (Opus 4.6/4.7/4.8) must build | ||
| // `thinking: { type: "adaptive" }` rather than the legacy | ||
| // `thinking: { type: "enabled", budget_tokens }` form when reasoning is | ||
| // requested, with depth conveyed via `output_config.effort`. | ||
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| async function buildAnthropicBody( | ||
| internalModel: string, | ||
| opts: { | ||
| reasoning_effort?: "low" | "medium" | "high" | "xhigh"; | ||
| reasoning_max_tokens?: number; | ||
| }, | ||
| ): Promise<AdaptiveThinkingBody> { | ||
| return (await prepareRequestBody( | ||
| "anthropic", | ||
| internalModel, | ||
| null, | ||
| internalModel, | ||
| [ | ||
| { | ||
| role: "user", | ||
| content: "Explain why the sum of two even numbers is always even.", | ||
| }, | ||
| ], | ||
| false, // stream | ||
| undefined, // temperature | ||
| undefined, // max_tokens | ||
| undefined, // top_p | ||
| undefined, // frequency_penalty | ||
| undefined, // presence_penalty | ||
| undefined, // response_format | ||
| undefined, // tools | ||
| undefined, // tool_choice | ||
| opts.reasoning_effort, // reasoning_effort | ||
| true, // supportsReasoning | ||
| false, // isProd | ||
| 20, // maxImageSizeMB | ||
| null, // userPlan | ||
| undefined, // sensitive_word_check | ||
| undefined, // image_config | ||
| undefined, // effort | ||
| undefined, // imageGenerations | ||
| undefined, // webSearchTool | ||
| opts.reasoning_max_tokens, // reasoning_max_tokens | ||
| )) as AdaptiveThinkingBody; | ||
| } | ||
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| describe("prepareRequestBody - adaptive thinking (Opus 4.6/4.7/4.8)", () => { | ||
| for (const model of [ | ||
| "claude-opus-4-6", | ||
| "claude-opus-4-7", | ||
| "claude-opus-4-8", | ||
| ]) { | ||
| test(`${model} builds thinking: { type: "adaptive" } with effort`, async () => { | ||
| const body = await buildAnthropicBody(model, { | ||
| reasoning_effort: "high", | ||
| }); | ||
| expect(body.thinking).toEqual({ type: "adaptive" }); | ||
| expect(body.output_config?.effort).toBe("high"); | ||
| }); | ||
| } | ||
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| test("Opus 4.6 routes reasoning.max_tokens to adaptive (drops budget_tokens)", async () => { | ||
| const body = await buildAnthropicBody("claude-opus-4-6", { | ||
| reasoning_max_tokens: 8000, | ||
| }); | ||
| expect(body.thinking).toEqual({ type: "adaptive" }); | ||
| }); | ||
| }); |
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Adaptive thinking can skip emitting reasoning text, but leaving
reasoningOutputundefined means the model metadata says reasoning output is expected by default (seeProviderModelMappingdocs), and the gateway reasoning e2e checks use that flag. The existing Opus 4.7/4.8 adaptive mappings setreasoningOutput: "omit"for this reason; without the same setting here, 4.6 requests/tests that inspect the metadata can fail whenever the model chooses not to produce a thinking block.Useful? React with 👍 / 👎.