Claude Sonnet 4.5: The Best Coding Model in the World
Anthropic’s Claude Sonnet 4.5 delivers state-of-the-art coding performance with 77.2% SWE-bench Verified accuracy, major gains on autonomous computer use, strong safety alignment, and developer-focused features like checkpointing and an Agent SDK.
Claude Sonnet 4.5: The Best Coding Model in the World
Anthropic has introduced Claude Sonnet 4.5, a major upgrade for software development workflows, combining strong benchmark performance, practical coding enhancements, and improved safety.
Key Performance
- SWE-bench Verified:
77.2%accuracy on real-world GitHub issues