Compare / Claude Fable 5.1 vs GPT-5.4 Nano
Claude Fable 5.1 vs GPT-5.4 Nano
17 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 Fable 5.1 | GPT-5.4 Nano |
|---|---|---|---|
| Arena (formerly LMArena)reported | OverallArena rating | 1,501 | 1,418 |
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,485 | 1,405 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,484 | 1,335 |
| Arena (formerly LMArena)reported | Expert promptsArena rating | 1,516 | 1,438 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,497 | 1,387 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,501 | 1,401 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,496 | 1,362 |
| Artificial Analysisreported | Artificial Analysis Coding Indexindex score | 81.6 | 56.1 |
| Artificial Analysisreported | Artificial Analysis Intelligence Indexindex score | 53.4 | 20.7 |
| Artificial Analysisreported | GPQA Diamond% of questions | 93.7% | 81.7% |
| Artificial Analysisreported | Humanity's Last Exam% of questions | 59.1% | 28.3% |
| Artificial Analysisreported | Long-context reasoning (AA-LCR)% of questions | 85.3% | 76.7% |
| Artificial Analysisreported | SciCode% of problems | 63.1% | 47.2% |
| Artificial Analysisreported | Terminal-Bench 2.1% of tasks | 91.4% | 60.7% |
| Artificial Analysisreported | Terminal-Bench 4.0% of tasks | 55.1% | 0.5% |
| Artificial Analysisreported | Τ-bench banking% of tasks | 47.2% | 27.4% |
| SimpleQA Verified (Epoch AI)reported | Correct answers% of questions | 70.8% | 11.7% |
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.