GPT-5.4 vs Grok 4.1 Fast
Head to head on 25 shared benchmarks, with price, context window, and release dates.
Benchmark scores
46evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GPT-5.4 OpenAI | 65.3% | 1840elo | 78.3 | 92.0% | 43.7% | 73.9% | 78.5% | 82.0% | 77.5% | 79.3% | 70.2% | 82.6% | 94.1% | 88.1% | 82.8% | 41.3% | 77.5% | 68.3% | 56.0% | 43.3% | 56.6% | 74.0% | 57.6% | 67.4% | 87.1% | - | - | 13.1% | 1.47 | 78.0% | 34.1% | 9.0% | 1272elo | 47.6% | 87.2% | - | - | 92063 | - | - | - | 86 | 52.2% | -0.61 | 40.8 | 80 | 65.4% |
| Grok 4.1 Fast xAI | 66.0% | 1327elo | 40.1 | 85.3% | 19.3% | 52.7% | 80.2% | 64.7% | 69.6% | 52.2% | 28.2% | 74.3% | 83.7% | 80.2% | 60.8% | 28.1% | 78.7% | 42.6% | 4.0% | 31.3% | 44.2% | 73.1% | 24.2% | 1.2% | 93.3% | 62.0% | 89.3% | - | - | - | - | - | - | - | - | 11.8 | 35.0% | - | 82.2% | 100.0% | 85.4% | - | - | - | - | - | 58.3% |
2 / 2 models
| Attribute | GPT-5.4 OpenAI | Grok 4.1 Fast xAI |
|---|---|---|
| Description | GPT-5.4 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 | 5 Mar 2026 | 19 Nov 2025 |
| Context | 1,050,000 | - |
| Input $/1M | $2.50 | - |
| Output $/1M | $15.00 | - |
| Cache read $/1M | $0.250 | - |
| Cache write $/1M | - | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image, file | text |
| Providers | - | - |
| Publisher | OpenAI | xAI |
| Reported scores | GPQA Diamond92.0% (AA) SciCode56.6% (AA) τ²-bench (Tau²-bench)87.1% (AA) Terminal-Bench (Hard)57.6% (AA) Vibe Code Bench v1.167.4% | Infraresolutionbench80.2% (150 samples) Agent Diff Bench62.0% (179 samples) Medpt100.0% (15 samples) Hanabi11.8 (15 samples) SciCode44.2% (AA) |
FAQ
- Is GPT-5.4 or Grok 4.1 Fast better?
- Across the 25 benchmarks both models report on Sophon, GPT-5.4 leads on 21 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do GPT-5.4 and Grok 4.1 Fast compare on GPQA Diamond?
- GPT-5.4 scores 92.0% and Grok 4.1 Fast scores 85.3% on GPQA Diamond.
- When were GPT-5.4 and Grok 4.1 Fast released?
- GPT-5.4 was released 5 Mar 2026 by OpenAI. Grok 4.1 Fast was released 19 Nov 2025 by xAI.
Other head-to-heads
56Gemini 3.1 Pro Preview vs GPT-5.434 shared evalsClaude Opus 4.6 vs GPT-5.433 shared evalsGPT-5.2 vs Grok 4.1 Fast30 shared evalsGPT-5.2 vs GPT-5.429 shared evalsClaude Opus 4.5 vs Grok 4.1 Fast29 shared evalsClaude Sonnet 4.5 vs Grok 4.1 Fast28 shared evalsGPT-5.4 vs GPT-5.528 shared evalsClaude Opus 4.8 vs GPT-5.428 shared evalsClaude Opus 4.5 vs GPT-5.428 shared evalsGPT-5.4 vs Kimi K2.528 shared evalsClaude Sonnet 4.6 vs GPT-5.428 shared evalsClaude Opus 4.7 vs GPT-5.428 shared evalsGPT-5 Mini vs GPT-5.427 shared evalsGPT-5.4 Mini vs GPT-5.427 shared evalsClaude Sonnet 4.5 vs GPT-5.426 shared evalsGPT-5 Mini vs Grok 4.1 Fast26 shared evalsClaude Fable 5 vs GPT-5.426 shared evalsGLM 5.1 vs GPT-5.426 shared evalsDeepSeek V3.2 vs Grok 4.1 Fast26 shared evalsGPT-5.5 vs Grok 4.1 Fast25 shared evalsGemini 3.1 Pro Preview vs Grok 4.1 Fast25 shared evalsClaude Opus 4.6 vs Grok 4.1 Fast25 shared evalsGPT-5 Nano vs Grok 4.1 Fast24 shared evalsClaude Opus 4.8 vs Grok 4.1 Fast24 shared evalsClaude 4 Sonnet vs Grok 4.1 Fast24 shared evalsDeepSeek V3.2 vs GPT-5.424 shared evalsGPT-5.4 vs Qwen3.6 Plus24 shared evalsGrok 4.1 Fast vs Kimi K2.524 shared evalsClaude Opus 4.7 vs Grok 4.1 Fast24 shared evalsGLM 4.7 vs Grok 4.1 Fast24 shared evalsClaude Fable 5 vs Grok 4.1 Fast23 shared evalsGLM 5.1 vs Grok 4.1 Fast23 shared evalsGPT-5 Nano vs GPT-5.422 shared evalsClaude 4 Sonnet vs GPT-5.422 shared evalsClaude Sonnet 4.6 vs Grok 4.1 Fast22 shared evalsGemini 2.5 Pro vs Grok 4.1 Fast22 shared evalsGPT-5.4 Mini vs Grok 4.1 Fast22 shared evalsGLM 4.7 vs GPT-5.421 shared evalsGrok 4.1 Fast vs Qwen3.6 Plus21 shared evalsGPT-5 vs Grok 4.1 Fast20 shared evalsGemini 2.5 Pro vs GPT-5.420 shared evalsgpt-oss-120b vs Grok 4.1 Fast20 shared evalsGPT-5 vs GPT-5.419 shared evalsGPT-5.4 vs gpt-oss-120b18 shared evalsGPT-4o vs Grok 4.1 Fast16 shared evalsGPT-4o-mini vs Grok 4.1 Fast15 shared evalsGPT-4.1 Mini vs Grok 4.1 Fast14 shared evalsGPT-4o vs GPT-5.414 shared evalsGPT-4.1 Nano vs Grok 4.1 Fast14 shared evalsGPT-4.1 vs GPT-5.413 shared evalsGPT-5.4 vs GPT-6 Astra13 shared evalsGPT-4.1 vs Grok 4.1 Fast13 shared evalsGPT-4.1 Mini vs GPT-5.412 shared evalsGPT-4o-mini vs GPT-5.412 shared evalsGPT-4.1 Nano vs GPT-5.412 shared evalsGPT-6 Astra vs Grok 4.1 Fast10 shared evals
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