Compare / Claude Opus 5.5 vs DeepSeek V4 Pro 0813
Claude Opus 5.5 vs DeepSeek V4 Pro 0813
12 results from 3 sources that measured both models. Each row is in the source's own units; there is no overall winner.
| Benchmark | Metric | Claude Opus 5.5 | DeepSeek V4 Pro 0813 |
|---|---|---|---|
| APEX-Agentsreported | Tasks passed% of tasks | 73.5% | 47.3% |
| Arena (formerly LMArena)reported | Confirmed task successIPS effect estimate | 0.16 | -0.01 |
| Arena (formerly LMArena)reported | Praise over complaintIPS effect estimate | 0.19 | 0.03 |
| Arena (formerly LMArena)reported | SteerabilityIPS effect estimate | 0.14 | 0.02 |
| Arena (formerly LMArena)reported | Tool groundingIPS effect estimate | 0.00 | 0.00 |
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,499 | 1,467 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,521 | 1,446 |
| Arena (formerly LMArena)reported | Expert promptsArena rating | 1,556 | 1,485 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,516 | 1,461 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,509 | 1,464 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,520 | 1,454 |
| SimpleQA Verified (Epoch AI)reported | Correct answers% of questions | 72.2% | 52.9% |
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.