Compare / Claude Sonnet 4.5 vs GPT-6 Luna
Claude Sonnet 4.5 vs GPT-6 Luna
13 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 Sonnet 4.5 | GPT-6 Luna |
|---|---|---|---|
| Arena (formerly LMArena)reported | OverallArena rating | 1,449 | 1,422 |
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,461 | 1,452 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,454 | 1,403 |
| Arena (formerly LMArena)reported | Expert promptsArena rating | 1,498 | 1,505 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,464 | 1,443 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,457 | 1,442 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,454 | 1,415 |
| Artificial Analysisreported | Artificial Analysis Intelligence Indexindex score | 20.7 | 38.1 |
| Artificial Analysisreported | Humanity's Last Exam% of questions | 17.8% | 38.5% |
| Artificial Analysisreported | Long-context reasoning (AA-LCR)% of questions | 72.3% | 83.3% |
| Artificial Analysisreported | SciCode% of problems | 45.7% | 54.6% |
| Artificial Analysisreported | Terminal-Bench 4.0% of tasks | 0.0% | 12.6% |
| SimpleQA Verified (Epoch AI)reported | Correct answers% of questions | 30.7% | 41.4% |
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.