Compare / GPT-5 Nano vs GPT-6 Sol
GPT-5 Nano vs GPT-6 Sol
12 results from 4 sources that measured both models. Each row is in the source's own units; there is no overall winner.
| Benchmark | Metric | GPT-5 Nano | GPT-6 Sol |
|---|---|---|---|
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,339 | 1,465 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,247 | 1,451 |
| Arena (formerly LMArena)reported | Expert promptsArena rating | 1,354 | 1,507 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,327 | 1,447 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,338 | 1,457 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,289 | 1,440 |
| Artificial Analysisreported | Artificial Analysis Intelligence Indexindex score | 13.0 | 47.6 |
| Artificial Analysisreported | Humanity's Last Exam% of questions | 9.5% | 47.9% |
| Artificial Analysisreported | Long-context reasoning (AA-LCR)% of questions | 45.0% | 83.7% |
| SimpleQA Verified (Epoch AI)reported | Correct answers% of questions | 11.7% | 60.7% |
| Vectara Hallucination Leaderboardreported | Answer rate% of documents | 100.0% | 100.0% |
| Vectara Hallucination Leaderboardreported | Hallucination rate% of summaries | 10.5% | 6.5% |
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.