Claude Opus 4.6 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 | |||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Opus 4.6 Anthropic | 67.0% | 1804elo | 77.7 | 84.0% | 19.1% | 44.6% | 84.9% | 78.8% | 78.2% | 69.9% | 63.3% | 83.3% | 89.3% | 88.7% | 78.5% | 48.2% | 86.7% | 68.5% | 50.0% | 51.6% | 45.7% | 76.0% | 48.5% | 57.6% | 84.8% | - | - | 99.79 | 56.1% | 1.5 | 2.08 | 71.0% | 1223elo | 40.7% | - | - | 88771 | 58 | - | - | - | 93 | 44.5 | 72.0% | 75.6% | 80.6 | 66.5% |
| 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% | 60.8% | 28.1% | 78.7% | 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% | 100.0% | 74.3% | - | - | - | - | - | 51.0% |
2 / 2 models
| Attribute | Claude Opus 4.6 Anthropic | Grok 4.1 Fast xAI |
|---|---|---|
| Description | Claude Opus 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 | 5 Feb 2026 | 19 Nov 2025 |
| Context | 1,000,000 | - |
| Input $/1M | $5.00 | - |
| Output $/1M | $25.00 | - |
| Cache read $/1M | $0.500 | - |
| Cache write $/1M | $6.250 | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image, file | text |
| Providers | - | - |
| Publisher | Anthropic | xAI |
| Reported scores | GPQA Diamond84.0% (AA) Humanity's Last Exam (HLE)19.1% (AA) SciCode45.7% (AA) τ²-bench (Tau²-bench)84.8% (AA) Terminal-Bench (Hard)48.5% (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 Opus 4.6 or Grok 4.1 Fast better?
- Across the 25 benchmarks both models report on Sophon, Claude Opus 4.6 leads on 25 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Opus 4.6 and Grok 4.1 Fast compare on GPQA Diamond?
- Claude Opus 4.6 scores 84.0% and Grok 4.1 Fast scores 63.7% on GPQA Diamond.
- When were Claude Opus 4.6 and Grok 4.1 Fast released?
- Claude Opus 4.6 was released 5 Feb 2026 by Anthropic. Grok 4.1 Fast was released 19 Nov 2025 by xAI.
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