Claude 4 Sonnet vs Grok 4.1 Fast
Head to head on 24 shared benchmarks, with price, context window, and release dates.
Benchmark scores
48evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude 4 Sonnet Anthropic | 38.0% | 54.7% | 1480elo | 58.4 | 68.3% | 4.3% | 45.4% | 64.8% | 77.5% | 54.6% | 44.3% | 72.9% | 70.5% | 69.0% | 44.9% | 33.9% | 72.4% | 83.7% | 62.5% | 35.0% | 37.3% | 69.6% | 27.3% | 52.3% | - | 40.7% | 22.9% | 47.8% | 19.8% | 67.5% | - | - | - | 93.4% | - | - | 86.7% | 43.9% | - | 6.18 | 6.18 | 58.3% | 35.6% | 74.6% | 0.59 | - | 84.0% | 84.0% | 55.5% |
| Grok 4.1 Fast xAI | 34.3% | 66.0% | 1324elo | 40.1 | 63.7% | 5.1% | 36.5% | 64.7% | 69.6% | 52.2% | 28.2% | 74.3% | 83.7% | 80.2% | 39.9% | 28.1% | 78.7% | 74.3% | 42.6% | 31.3% | 29.6% | 73.1% | 14.4% | 63.7% | 62.0% | - | - | - | - | - | 11.8 | 35.0% | 80.2% | - | 60.8% | 100.0% | - | - | 4.0% | - | - | - | - | - | - | 1.2% | - | - | 51.0% |
2 / 2 models
| Attribute | Claude 4 Sonnet Anthropic | Grok 4.1 Fast xAI |
|---|---|---|
| Description | Claude 4 Sonnet is an AI model from Anthropic. | Grok 4.1 Fast is an AI model from xAI. |
| Family | Claude | Grok |
| Params | - | - |
| Open weights | closed | closed |
| License | proprietary | proprietary |
| Released | 22 May 2025 | 19 Nov 2025 |
| Context | 200,000 | - |
| Input $/1M | $3.00 | - |
| Output $/1M | $15.00 | - |
| Cache read $/1M | - | - |
| Cache write $/1M | - | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image | text |
| Providers | - | - |
| Publisher | Anthropic | 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 Claude 4 Sonnet or Grok 4.1 Fast better?
- Across the 24 benchmarks both models report on Sophon, Claude 4 Sonnet leads on 16 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude 4 Sonnet and Grok 4.1 Fast compare on GPQA Diamond?
- Claude 4 Sonnet scores 68.3% and Grok 4.1 Fast scores 63.7% on GPQA Diamond.
- When were Claude 4 Sonnet and Grok 4.1 Fast released?
- Claude 4 Sonnet was released 22 May 2025 by Anthropic. Grok 4.1 Fast was released 19 Nov 2025 by xAI.
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