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Anthropic: Claude Sonnet 5.5

claude-sonnet-5.5

Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fixing bugs, and producing...

Modalities

Input

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Output

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Pricing
Cost per 1 million tokens
Input
$2.4
Output
$12
Model Specs
Context Window
1,000,000
Max Output
128,000
Release Date
2026-09-28
Knowledge Cutoff
2026-06
Capabilities
Reasoning
Tool Calling
Vision

Last Updated: 2026-09-28

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