Compare / Claude Opus 5.5 vs DeepSeek V4 Pro 0423
Claude Opus 5.5 vs DeepSeek V4 Pro 0423
22 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 0423 |
|---|---|---|---|
| ROASBenchmeasured by us | Audience scorescore out of 100 | 67.7 | 44.8 |
| ROASBenchmeasured by us | Business scorescore out of 100 | 52.3 | 23.8 |
| ROASBenchmeasured by us | Consistency scorescore out of 100 | 33.8 | 9.1 |
| ROASBenchmeasured by us | Contribution profitsimulated US dollars | $911,566 | $301,289 |
| ROASBenchmeasured by us | Cost of a runUS dollars | $1.06 | $0.20 |
| ROASBenchmeasured by us | Months over budgetmonths of 12 | 0 | 0 |
| ROASBenchmeasured by us | Overall scorescore out of 100 | 51.6 | 28.2 |
| ROASBenchmeasured by us | Planning scorescore out of 100 | 54.6 | 54.0 |
| ROASBenchmeasured by us | Return on ad spendprofit per $1 spent | $0.69 | $0.26 |
| Arena (formerly LMArena)reported | Confirmed task successIPS effect estimate | 0.16 | -0.04 |
| Arena (formerly LMArena)reported | Praise over complaintIPS effect estimate | 0.19 | -0.02 |
| Arena (formerly LMArena)reported | SteerabilityIPS effect estimate | 0.14 | -0.03 |
| Arena (formerly LMArena)reported | Tool groundingIPS effect estimate | 0.00 | -0.00 |
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,499 | 1,460 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,521 | 1,446 |
| Arena (formerly LMArena)reported | Expert promptsArena rating | 1,556 | 1,480 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,516 | 1,452 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,509 | 1,458 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,520 | 1,451 |
| UGI Leaderboardreported | Requested-length error% off the requested word count | 2.0% | 34.0% |
| UGI Leaderboardreported | Style adherencescore from 0 to 1 | 0.43 | 0.36 |
| UGI Leaderboardreported | Writing scorescore out of 100 | 70.0 | 68.4 |
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.