Compare / GPT-5.4 Nano vs GPT-6 Luna
GPT-5.4 Nano vs GPT-6 Luna
18 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-5.4 Nano | GPT-6 Luna |
|---|---|---|---|
| BulletBenchmeasured by us | Cost per gameUS dollars | $0.0050 | $0.0016 |
| BulletBenchmeasured by us | Games lost on time% of games | 66.7% | 50.0% |
| BulletBenchmeasured by us | Invalid moves% of moves | 3.1% | 0.0% |
| BulletBenchmeasured by us | Ladder Eloladder Elo | 33 | 249 |
| BulletBenchmeasured by us | Median move timemilliseconds | 1.1 s | 1.5 s |
| Arena (formerly LMArena)reported | OverallArena rating | 1,418 | 1,422 |
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,405 | 1,452 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,335 | 1,403 |
| Arena (formerly LMArena)reported | Expert promptsArena rating | 1,438 | 1,505 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,387 | 1,443 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,401 | 1,442 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,362 | 1,415 |
| Artificial Analysisreported | Artificial Analysis Intelligence Indexindex score | 20.7 | 38.1 |
| Artificial Analysisreported | Humanity's Last Exam% of questions | 28.3% | 38.5% |
| Artificial Analysisreported | Long-context reasoning (AA-LCR)% of questions | 76.7% | 83.3% |
| Artificial Analysisreported | SciCode% of problems | 47.2% | 54.6% |
| Artificial Analysisreported | Terminal-Bench 4.0% of tasks | 0.5% | 12.6% |
| SimpleQA Verified (Epoch AI)reported | Correct answers% of questions | 11.7% | 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.