Stephen M. Walker II
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Anthropic is back — finally — with Sonnet and Opus 4. Self-reported benchmarks push the models to the top of leaderboards.

Anthropic says they've fixed Claude 3.7's overeagerness, but in my tests, Sonnet 4 is still too eager to take actions I didn't request.

Opus 4 still behind Grok 3 and OpenAI o3 in its Swift development capabilities.

Published on May 23, 2025