GPT-5.4 Mini vs Grok 4.1 Fast
Head to head on 22 shared benchmarks, with price, context window, and release dates.
Benchmark scores
40evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grok 4.1 Fast xAI | 66.0% | 1324elo | 40.1 | 63.7% | 5.1% | 36.5% | 80.2% | 64.7% | 69.6% | 52.2% | 28.2% | 74.3% | 83.7% | 80.2% | 42.6% | 4.0% | 31.3% | 29.6% | 73.1% | 14.4% | 1.2% | 63.7% | 62.0% | 34.3% | - | - | - | - | - | 11.8 | 35.0% | 39.9% | 60.8% | 28.1% | 100.0% | 78.7% | 74.3% | - | - | - | 51.0% |
| GPT-5.4 Mini OpenAI | 60.9% | 1662elo | 73 | 60.6% | 5.9% | 38.8% | 80.3% | 70.9% | 71.6% | 70.9% | 60.3% | 71.5% | 78.6% | 72.5% | 63.5% | 21.0% | 50.8% | 39.6% | 71.2% | 18.2% | 48.0% | 23.4% | - | - | 37.0% | 21.2% | 3.9% | 45.4% | 28.3% | - | - | - | - | - | - | - | - | 61.7 | 39.6% | 54.2% | 48.4% |
2 / 2 models
| Attribute | GPT-5.4 Mini OpenAI | Grok 4.1 Fast xAI |
|---|---|---|
| Description | GPT-5.4 mini is an AI model from OpenAI. | Grok 4.1 Fast is an AI model from xAI. |
| Family | GPT | Grok |
| Params | - | - |
| Open weights | closed | closed |
| License | proprietary | proprietary |
| Released | 17 Mar 2026 | 19 Nov 2025 |
| Context | 400,000 | - |
| Input $/1M | $0.75 | - |
| Output $/1M | $4.50 | - |
| Cache read $/1M | $0.075 | - |
| Cache write $/1M | - | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | file, image, text | text |
| Providers | - | - |
| Publisher | OpenAI | xAI |
| Reported scores | Infraresolutionbench80.2% (150 samples) Agent Diff Bench62.0% (179 samples) Medpt100.0% (15 samples) Hanabi11.8 (15 samples) SciCode29.6% (AA) |
FAQ
- Is GPT-5.4 Mini or Grok 4.1 Fast better?
- Across the 22 benchmarks both models report on Sophon, GPT-5.4 Mini leads on 15 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do GPT-5.4 Mini and Grok 4.1 Fast compare on GPQA Diamond?
- GPT-5.4 Mini scores 60.6% and Grok 4.1 Fast scores 63.7% on GPQA Diamond.
- When were GPT-5.4 Mini and Grok 4.1 Fast released?
- GPT-5.4 Mini was released 17 Mar 2026 by OpenAI. Grok 4.1 Fast was released 19 Nov 2025 by xAI.
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