extended-thinking changedbuild-with-claude/extended-thinking
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363363You need to migrate off `type: "enabled"` if:
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365365* You use Claude Opus 4.6 or Claude Sonnet 4.6, where `budget_tokens` is deprecated.
366* You use Claude 4.7 or a later model, such as Claude Opus 5.5, Claude Sonnet 5, Claude Sonnet 5.5, Claude Fable 5.1, or Claude Haiku 5.5, where `type: "enabled"` returns a 400 error.
366* You use Claude 4.7 or a later model, such as Claude Opus 5.5, Claude Sonnet 5, Claude Sonnet 5.5, Claude Fable 5.2, Claude Fable 5.1, or Claude Haiku 5.5, where `type: "enabled"` returns a 400 error.
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368368The mapping is small: remove `budget_tokens`, set `thinking: {type: "adaptive"}`, and control reasoning depth with `output_config: {effort: ...}` instead of a token budget.
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