Compare / GPT-5.1 vs GPT-6 Sol
GPT-5.1 vs GPT-6 Sol
14 results from 5 sources that measured both models. Each row is in the source's own units; there is no overall winner.
| Benchmark | Metric | GPT-5.1 | GPT-6 Sol |
|---|---|---|---|
| Arena (formerly LMArena)reported | OverallArena rating | 1,459 | 1,424 |
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,448 | 1,465 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,428 | 1,451 |
| Arena (formerly LMArena)reported | Expert promptsArena rating | 1,482 | 1,507 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,450 | 1,447 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,456 | 1,457 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,437 | 1,440 |
| Artificial Analysisreported | Artificial Analysis Intelligence Indexindex score | 24.7 | 47.6 |
| Artificial Analysisreported | Humanity's Last Exam% of questions | 28.5% | 47.9% |
| Artificial Analysisreported | Long-context reasoning (AA-LCR)% of questions | 80.0% | 83.7% |
| SimpleQA Verified (Epoch AI)reported | Correct answers% of questions | 48.0% | 60.7% |
| Vectara Hallucination Leaderboardreported | Answer rate% of documents | 100.0% | 100.0% |
| Vectara Hallucination Leaderboardreported | Hallucination rate% of summaries | 10.9% | 6.5% |
| Vending-Bench 2reported | Money after a yearUS dollars | $1,473.43 | $14,427.85 |
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.