Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reasoning effort levels (low, medium, high, max,...
In / out price$2.00/$10.00per 1M tokens
Context
1M tokens
Parameters
Undisclosed
Modalities
→
Released
Jun 30, 2026
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