Claude Sonnet 4.5
Anthropic says Sonnet 4.5 can stay focused on complex tasks for more than 30 hours, and leads coding and computer-use benchmarks at launch.
Model summary
- Developer
- Anthropic
Reported benchmark results
| SWE-bench Verified | 77.2% | |
| OSWorld | 61.4% | Sonnet 4 four months earlier: 42.2% |
Data source: Anthropic announcement. Scores are as published by the developer at launch. Test conditions differ between companies, so compare with care.