Claude Sonnet 4.6 vs Grok 4.1 Fast
Head to head on 22 shared benchmarks, with price, context window, and release dates.
Benchmark scores
45evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Sonnet 4.6 Anthropic | 65.3% | 1805elo | 79.9 | 79.7% | 11.2% | 42.4% | 92.2% | 78.4% | 80.0% | 76.1% | 63.9% | 77.7% | 86.5% | 86.4% | 67.7% | 45.0% | 46.6% | 44.1% | 77.1% | 42.4% | 51.5% | 78.9% | - | 87.1% | - | 47.2% | 47.6% | 1.35 | 78.0% | 1207elo | 51.0% | 32.4% | - | - | - | - | - | - | - | - | 89.3 | 72.1% | 76.3 | 50.6% | 60.6% | 62.8% |
| 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% |
2 / 2 models
| Attribute | Claude Sonnet 4.6 Anthropic | Grok 4.1 Fast xAI |
|---|---|---|
| Description | Claude Sonnet 4.6 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 | 17 Feb 2026 | 19 Nov 2025 |
| Context | 1,000,000 | - |
| Input $/1M | $3.00 | - |
| Output $/1M | $15.00 | - |
| Cache read $/1M | $0.300 | - |
| Cache write $/1M | $3.750 | - |
| Speed | 45 tok/s | 0 tok/s |
| Latency | 1.12 s | 0.00 s |
| Modalities | text, image, file | text |
| Providers | - | - |
| Publisher | Anthropic | xAI |
| Reported scores | GPQA Diamond79.7% (AA) Humanity's Last Exam (HLE)11.2% (AA) IFBench42.4% (AA) SciCode44.1% (AA) τ²-bench (Tau²-bench)78.9% (AA) | Infraresolutionbench80.2% (150 samples) Agent Diff Bench62.0% (179 samples) Medpt100.0% (15 samples) Hanabi11.8 (15 samples) SciCode29.6% (AA) |
FAQ
- Is Claude Sonnet 4.6 or Grok 4.1 Fast better?
- Across the 22 benchmarks both models report on Sophon, Claude Sonnet 4.6 leads on 21 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Sonnet 4.6 and Grok 4.1 Fast compare on GPQA Diamond?
- Claude Sonnet 4.6 scores 79.7% and Grok 4.1 Fast scores 63.7% on GPQA Diamond.
- When were Claude Sonnet 4.6 and Grok 4.1 Fast released?
- Claude Sonnet 4.6 was released 17 Feb 2026 by Anthropic. Grok 4.1 Fast was released 19 Nov 2025 by xAI.
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