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% | 1809elo | 77.7 | 89.6% | 39.9% | 53.1% | 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% | 51.9% | 76.0% | 46.2% | 57.6% | 92.1% | - | - | 99.79 | 56.1% | 1.5 | 2.08 | 69.0% | 1223elo | 40.7% | - | - | 88771 | 58 | - | - | - | 93 | 44.5 | 72.0% | 75.6% | 80.6 | 68.1% |
| 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 | 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 Diamond89.6% (AA) Humanity's Last Exam (HLE)39.9% (AA) SciCode51.9% (AA) τ²-bench (Tau²-bench)92.1% (AA) Terminal-Bench (Hard)46.2% (AA) | Infraresolutionbench80.2% (150 samples) Agent Diff Bench62.0% (179 samples) Medpt100.0% (15 samples) Hanabi11.8 (15 samples) SciCode44.2% (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 24 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 89.6% and Grok 4.1 Fast scores 85.3% 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.
Other head-to-heads
56Claude Opus 4.6 vs GPT-5.433 shared evalsClaude Opus 4.6 vs Gemini 3.1 Pro Preview31 shared evalsClaude Opus 4.6 vs Kimi K2.531 shared evalsClaude Opus 4.6 vs GPT-5.230 shared evalsGPT-5.2 vs Grok 4.1 Fast30 shared evalsClaude Opus 4.5 vs Grok 4.1 Fast29 shared evalsClaude Opus 4.6 vs Claude Opus 4.729 shared evalsClaude Opus 4.6 vs Claude Sonnet 4.528 shared evalsClaude Sonnet 4.5 vs Grok 4.1 Fast28 shared evalsClaude Opus 4.6 vs GPT-5 Mini28 shared evalsClaude Opus 4.6 vs GPT-5.528 shared evalsClaude Opus 4.6 vs Claude Opus 4.828 shared evalsClaude Opus 4.5 vs Claude Opus 4.628 shared evalsClaude Opus 4.6 vs Claude Sonnet 4.628 shared evalsClaude Opus 4.6 vs GLM 5.127 shared evalsGPT-5 Mini vs Grok 4.1 Fast26 shared evalsClaude Fable 5 vs Claude Opus 4.626 shared evalsClaude Opus 4.6 vs DeepSeek V3.226 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 GPT-5.4 Mini25 shared evalsGPT-5.4 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 evalsClaude Opus 4.6 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 Opus 4.6 vs GPT-5 Nano23 shared evalsClaude Fable 5 vs Grok 4.1 Fast23 shared evalsGLM 5.1 vs Grok 4.1 Fast23 shared evalsClaude 4 Sonnet vs Claude Opus 4.622 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 evalsClaude Opus 4.6 vs Gemini 2.5 Pro21 shared evalsClaude Opus 4.6 vs GLM 4.721 shared evalsGrok 4.1 Fast vs Qwen3.6 Plus21 shared evalsGPT-5 vs Grok 4.1 Fast20 shared evalsgpt-oss-120b vs Grok 4.1 Fast20 shared evalsClaude Opus 4.6 vs GPT-519 shared evalsClaude Opus 4.6 vs gpt-oss-120b19 shared evalsGPT-4o vs Grok 4.1 Fast16 shared evalsClaude Opus 4.6 vs GPT-4o15 shared evalsGPT-4o-mini vs Grok 4.1 Fast15 shared evalsGPT-4.1 Mini vs Grok 4.1 Fast14 shared evalsGPT-4.1 Nano vs Grok 4.1 Fast14 shared evalsClaude Opus 4.6 vs GPT-4.1 Mini13 shared evalsClaude Opus 4.6 vs GPT-4.113 shared evalsClaude Opus 4.6 vs GPT-6 Astra13 shared evalsGPT-4.1 vs Grok 4.1 Fast13 shared evalsClaude Opus 4.6 vs GPT-4o-mini12 shared evalsClaude Opus 4.6 vs GPT-4.1 Nano12 shared evalsGPT-6 Astra vs Grok 4.1 Fast10 shared evals
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