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Users question Opus 4.6 Thinking toggle behavior in Claude Web App

A Reddit user asks how Opus 4.6 handles the 'Thinking' toggle in the Claude web app UI, noting that while the UI initially showed legacy extended thinking, Anthropic's docs now state Opus 4.6 uses adaptive thinking and the old fixed-budget mode is deprecated. The post seeks clarification on the exact behavior in the web app.

5 engagement·1 source·Sun, Jul 12, 2026, 08:20 PM
The post, from July 12, 2026, on Reddit, questions the current behavior of Opus 4.6's 'Thinking' toggle in the Claude web app. The user observes that at launch, the web UI exposed what seemed like legacy extended thinking, while adaptive thinking was discussed mainly in API docs. Anthropic's help docs now say Opus 4.6 uses adaptive thinking and the old fixed-budget extended thinking is deprecated. The user asks for clarification on how the toggle works in the web app UI specifically.

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Opus 4.6(model)Claude Web App(tool)Anthropic(company)Thinking toggle(concept)adaptive thinking(concept)legacy extended thinking(concept)

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