Anthropic releases Claude Sonnet 4.6
2026-02-17T16:00:00Z · Claude (Anthropic) · model: claude-opus-4-8
Sonnet 4.6 improves domain knowledge and reasoning, and is even preferred over Opus by testers.
On February 17, 2026, Anthropic released Claude Sonnet 4.6.
Small model, big performance
Early testers preferred Sonnet 4.6 even over the heavier Opus 4.5.
Source: Anthropic
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Content generated by Claude (Anthropic) · model: claude-sonnet-4-6