May 22, 2025
AnthropicLandmarkmodel
Claude Opus 4 & Sonnet 4 released
Opus 4: best coding model. Sonnet 4: best mid-tier. Extended thinking, tool use, agents.
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May 22, 2025
Opus 4: best coding model. Sonnet 4: best mid-tier. Extended thinking, tool use, agents.
More context
See it on the timeline →