Compare / Claude Haiku 4.5 vs GPT-5.4 Nano
Claude Haiku 4.5 vs GPT-5.4 Nano
19 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 Haiku 4.5 | GPT-5.4 Nano |
|---|---|---|---|
| BulletBenchmeasured by us | Cost per gameUS dollars | $0.0163 | $0.0050 |
| BulletBenchmeasured by us | Games lost on time% of games | 25.0% | 66.7% |
| BulletBenchmeasured by us | Invalid moves% of moves | 0.3% | 3.1% |
| BulletBenchmeasured by us | Ladder Eloladder Elo | 445 | 33 |
| BulletBenchmeasured by us | Median move timemilliseconds | 1.2 s | 1.1 s |
| BulletBenchmeasured by us | Cost per gameUS dollars | $0.0095 | $0.0025 |
| BulletBenchmeasured by us | Games lost on time% of games | 83.3% | 75.0% |
| BulletBenchmeasured by us | Invalid moves% of moves | 0.0% | 4.0% |
| BulletBenchmeasured by us | Ladder Eloladder Elo | 33 | 197 |
| BulletBenchmeasured by us | Median move timemilliseconds | 1.3 s | 1.0 s |
| Arena (formerly LMArena)reported | OverallArena rating | 1,418 | 1,418 |
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,420 | 1,405 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,387 | 1,335 |
| Arena (formerly LMArena)reported | Expert promptsArena rating | 1,452 | 1,438 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,415 | 1,387 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,414 | 1,401 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,399 | 1,362 |
| Vectara Hallucination Leaderboardreported | Answer rate% of documents | 99.5% | 100.0% |
| Vectara Hallucination Leaderboardreported | Hallucination rate% of summaries | 9.8% | 3.1% |
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.