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A head-to-head benchmark comparison of Claude Sonnet 4.5 across 17 evaluations.
Claude Sonnet 4.5 is the best coding model in the world. It's the strongest model for building complex agents. Itβs the best model at using computers. And it sh.
Full Claude Sonnet 4.5 specs β| Benchmark | Claude Sonnet 4.5 |
|---|---|
| agentic | |
| BrowseComp | 24.1% |
| BrowseComp-Zh | 42.4 |
| MCP-Mark | 33.3 |
| MCP-Universe | 46.5 |
| Terminal-Bench 2.0 | 42.8% |
| Tool-Decathlon | 38.6 |
| ΟΒ²-Bench (TAU2) | 84.7 |
| code | |
| Codeforces Elo | 1,480 |
| LiveCodeBench | 64% |
| SWE-bench Verified | 77.2% |
| coding | |
| SWE-Bench Multilingual | 68 |
| general | |
| MMLU-Pro | 88.2% |
| math | |
| AIME 2025 | 87% |
| HMMT February 2025 | 79.2% |
| HMMT November 2025 | 81.7 |
| reasoning | |
| GPQA Diamond | 83.4% |
| Humanity's Last Exam | 32% |
Best result per row highlighted in cyan. Each benchmark links to its definition and sources; each model links to its full scorecard.
Claude Sonnet 4.5 has the strongest result on Codeforces Elo among the models compared here. See the code-category rows in the table for the full picture.
This comparison covers 17 benchmarks on which at least one of the selected models has a published score.
Scores are aggregated from official model cards, technical reports and standard public evaluations, and link back to each benchmark's source. They are updated as new results are published.
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