Compare / Claude Opus 5 vs Grok 4.3
Claude Opus 5 vs Grok 4.3
19 results from 5 sources that measured both models. Each row is in the source's own units; there is no overall winner.
| Benchmark | Metric | Claude Opus 5 | Grok 4.3 |
|---|---|---|---|
| Arena (formerly LMArena)reported | OverallArena rating | 1,488 | 1,428 |
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,486 | 1,440 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,472 | 1,423 |
| Arena (formerly LMArena)reported | Expert promptsArena rating | 1,543 | 1,452 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,497 | 1,415 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,491 | 1,442 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,482 | 1,424 |
| Artificial Analysisreported | Artificial Analysis Coding Indexindex score | 78.0 | 42.2 |
| Artificial Analysisreported | Artificial Analysis Intelligence Indexindex score | 50.8 | 24.9 |
| Artificial Analysisreported | GPQA Diamond% of questions | 93.7% | 90.1% |
| Artificial Analysisreported | Humanity's Last Exam% of questions | 54.9% | 37.2% |
| Artificial Analysisreported | Long-context reasoning (AA-LCR)% of questions | 82.0% | 75.0% |
| Artificial Analysisreported | SciCode% of problems | 56.4% | 48.3% |
| Artificial Analysisreported | Terminal-Bench 2.1% of tasks | 89.1% | 39.7% |
| Artificial Analysisreported | Terminal-Bench 4.0% of tasks | 49.0% | 0.0% |
| Artificial Analysisreported | Τ-bench banking% of tasks | 44.7% | 12.4% |
| GDP.pdfreported | Professional document tasks% of rubric | 24.0% | 8.0% |
| SimpleQA Verified (Epoch AI)reported | Correct answers% of questions | 59.9% | 33.2% |
| Vending-Bench 2reported | Money after a yearUS dollars | $11,181.87 | $35.26 |
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.