Compare / Claude Opus 4.6 vs Claude Opus 5
Claude Opus 4.6 vs Claude Opus 5
17 results from 6 sources that measured both models. Each row is in the source's own units; there is no overall winner.
| Benchmark | Metric | Claude Opus 4.6 | Claude Opus 5 |
|---|---|---|---|
| APEX-Agentsreported | Tasks passed% of tasks | 46.3% | 65.8% |
| Arena (formerly LMArena)reported | OverallArena rating | 1,495 | 1,490 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,494 | 1,488 |
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,501 | 1,486 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,501 | 1,472 |
| Arena (formerly LMArena)reported | Expert promptsArena rating | 1,547 | 1,543 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,513 | 1,497 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,505 | 1,491 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,500 | 1,482 |
| Artificial Analysisreported | Artificial Analysis Intelligence Indexindex score | 31.9 | 50.8 |
| Artificial Analysisreported | GPQA Diamond% of questions | 89.6% | 93.7% |
| Artificial Analysisreported | Humanity's Last Exam% of questions | 39.9% | 54.9% |
| Artificial Analysisreported | Long-context reasoning (AA-LCR)% of questions | 78.0% | 82.0% |
| SimpleQA Verified (Epoch AI)reported | Correct answers% of questions | 47.0% | 59.9% |
| tau2-benchreported | Consistency (pass^4)% of tasks | 11.3% | 32.0% |
| tau2-benchreported | Task success (pass^1)% of tasks | 27.3% | 48.7% |
| Vending-Bench 2reported | Money after a yearUS dollars | $8,017.59 | $11,181.87 |
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.