Anthropic releases Claude Sonnet 4.6
17 februari 2026 om 17:00 · 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