overview changedmodels/opus-5-5/overview
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11---
22title: Claude Opus 5.5
33url: https://platform.claude.com/docs/en/models/opus-5-5/overview
4description: "Claude Opus 5.5 at a glance: what it's for, model IDs on every platform, context window, output limits, pricing, availability, and the guides and resources for building with it."
4description: "An overview of Claude Opus 5.5: what it's for, model IDs on every platform, context window, output limits, pricing, availability, and the guides and resources for building with it."
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77**Latest.** Released September 22, 2026.
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100100 </Card>
101101
102102 <Card title="Effort" icon="sliders" href="https://platform.claude.com/docs/en/build-with-claude/effort">
103 The control for thinking depth, latency, and cost. Choose a level per workload.
103 The control for thinking depth, latency, and cost. Choose a level for each workload.
104104 </Card>
105105
106106 <Card title="Adaptive thinking" icon="brain" href="https://platform.claude.com/docs/en/build-with-claude/thinking">
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