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Claude Sonnet 5.5 release
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Anthropic released Claude Sonnet 5.5, a mid-tier model positioned between Sonnet 5 and Opus 5.5. The new version delivers faster code review performance with higher catch rates than its predecessor, while scoring near Opus 5.5 on the Artificial Analysis Intelligence Index.
- Sonnet 5.5 catches more code issues than Sonnet 5 in half the time
- Scores just behind Opus 5.5 on Artificial Analysis Intelligence Index benchmark
- Positioned as cost-effective alternative to Opus with guidance on when to choose each model
- System Card documentation released detailing model capabilities and safety properties
- Demonstrates improved performance on code review and analysis tasks versus prior Sonnet generation
[HN]hacker news9
Thoughts on AI
AI is a normal technology? (Claude 5.5 video in musical style)
Vibe Coding Is Coming Whether We Like It or Not
Claude Sonnet 5.5 for code review: More catches than Sonnet 5, in half the time
Sonnet 5.5 scores just behind Opus 5.5 on Artificial Analysis Intelligence Index
When to choose Sonnet over Opus, what it costs, and how to tune it
Claude Sonnet 5.5 (Max Effort) Intelligence, Performance and Price Analysis
Sonnet 5.5 System Card [pdf]
Sonnet 5.5
[BSKY]bluesky3
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