Compare / Claude Sonnet 4.5 vs Kimi K2 Thinking
Claude Sonnet 4.5 vs Kimi K2 Thinking
9 results from 2 sources that measured both models. Each row is in the source's own units; there is no overall winner.
| Benchmark | Metric | Claude Sonnet 4.5 | Kimi K2 Thinking |
|---|---|---|---|
| OpenHands Indexreported | Average% resolved | 53.0% | 41.0% |
| OpenHands Indexreported | Front end (SWE-Bench Multimodal)% resolved | 36.8% | 32.4% |
| OpenHands Indexreported | Greenfield (Commit0)% resolved | 12.5% | 12.5% |
| OpenHands Indexreported | Information gathering (GAIA)% resolved | 72.7% | 43.6% |
| OpenHands Indexreported | Issue resolution (SWE-Bench)% resolved | 74.2% | 69.2% |
| OpenHands Indexreported | Testing (SWT-Bench)% resolved | 68.8% | 47.3% |
| UGI Leaderboardreported | Requested-length error% off the requested word count | 5.0% | 20.0% |
| UGI Leaderboardreported | Style adherencescore from 0 to 1 | 0.41 | 0.38 |
| UGI Leaderboardreported | Writing scorescore out of 100 | 66.9 | 59.3 |
Bold green marks the better value on that metric. Where a source reports ranges that overlap, the difference may not be meaningful; see the benchmark page for ranges.