Compare / GPT-5.4 Nano vs grok-4-1-fast-reasoning
GPT-5.4 Nano vs grok-4-1-fast-reasoning
16 results from 3 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 | grok-4-1-fast-reasoning |
|---|---|---|---|
| Arena (formerly LMArena)reported | OverallArena rating | 1,418 | 1,413 |
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,405 | 1,417 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,335 | 1,414 |
| Arena (formerly LMArena)reported | Expert promptsArena rating | 1,438 | 1,438 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,387 | 1,401 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,401 | 1,430 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,362 | 1,407 |
| Artificial Analysisreported | Artificial Analysis Intelligence Indexindex score | 20.7 | 20.4 |
| Artificial Analysisreported | GPQA Diamond% of questions | 81.7% | 85.3% |
| Artificial Analysisreported | Humanity's Last Exam% of questions | 28.3% | 19.3% |
| Artificial Analysisreported | IFBench% of instructions | 75.9% | 52.7% |
| Artificial Analysisreported | Long-context reasoning (AA-LCR)% of questions | 76.7% | 74.0% |
| Artificial Analysisreported | Terminal-Bench Hard% of tasks | 42.4% | 24.2% |
| Artificial Analysisreported | Τ²-bench telecom% of tasks | 76.0% | 93.3% |
| Vectara Hallucination Leaderboardreported | Answer rate% of documents | 100.0% | 99.7% |
| Vectara Hallucination Leaderboardreported | Hallucination rate% of summaries | 3.1% | 19.2% |
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.