Compare / Claude Sonnet 4.5 vs DeepSeek V4 Pro 0423
Claude Sonnet 4.5 vs DeepSeek V4 Pro 0423
18 results from 4 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 | DeepSeek V4 Pro 0423 |
|---|---|---|---|
| Arena (formerly LMArena)reported | OverallArena rating | 1,449 | 1,455 |
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,461 | 1,460 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,454 | 1,446 |
| Arena (formerly LMArena)reported | Expert promptsArena rating | 1,498 | 1,480 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,464 | 1,452 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,457 | 1,458 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,454 | 1,451 |
| OpenHands Indexreported | Average% resolved | 53.0% | 40.7% |
| OpenHands Indexreported | Front end (SWE-Bench Multimodal)% resolved | 36.8% | 36.8% |
| OpenHands Indexreported | Greenfield (Commit0)% resolved | 12.5% | 12.5% |
| OpenHands Indexreported | Information gathering (GAIA)% resolved | 72.7% | 12.7% |
| OpenHands Indexreported | Issue resolution (SWE-Bench)% resolved | 74.2% | 73.2% |
| OpenHands Indexreported | Testing (SWT-Bench)% resolved | 68.8% | 68.1% |
| UGI Leaderboardreported | Requested-length error% off the requested word count | 5.0% | 34.0% |
| UGI Leaderboardreported | Style adherencescore from 0 to 1 | 0.41 | 0.36 |
| UGI Leaderboardreported | Writing scorescore out of 100 | 66.9 | 68.4 |
| Vectara Hallucination Leaderboardreported | Answer rate% of documents | 95.6% | 97.2% |
| Vectara Hallucination Leaderboardreported | Hallucination rate% of summaries | 12.0% | 8.6% |
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.