gpt-oss-120b vs Grok 4.1 Fast
Head to head on 20 shared benchmarks, with price, context window, and release dates.
Benchmark scores
43evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grok 4.1 Fast xAI | 89.3% | 66.0% | 1327elo | 40.1 | 85.3% | 19.3% | 52.7% | 64.7% | 69.6% | 52.2% | 28.2% | 74.3% | 83.7% | 80.2% | 82.2% | 85.4% | 44.2% | 73.1% | 24.2% | 93.3% | 62.0% | - | - | - | - | 11.8 | - | 35.0% | 80.2% | - | - | 60.8% | 28.1% | 100.0% | 78.7% | - | 42.6% | 4.0% | 31.3% | - | - | - | 1.2% | 58.3% |
| gpt-oss-120b OpenAI | 93.4% | 58.2% | 961elo | 35.8 | 78.2% | 19.6% | 69.0% | 51.0% | 60.2% | 38.8% | 50.3% | 48.6% | 68.9% | 39.2% | 87.8% | 80.8% | 34.0% | 71.6% | 23.5% | 65.8% | - | 41.8% | 38.9% | 7.6% | 11.0% | - | 57.6 | - | - | 1.62 | 1.53 | - | - | - | - | 80.0% | - | - | - | 97.9% | 26.0% | 65.6% | - | 54.1% |
2 / 2 models
| Attribute | gpt-oss-120b OpenAI | Grok 4.1 Fast xAI |
|---|---|---|
| Description | GPT-Oss 120b is an AI model from OpenAI, released with open weights. | Grok 4.1 Fast is an AI model from xAI. |
| Family | GPT | Grok |
| Params | - | - |
| Open weights | open | closed |
| License | apache-2.0 | proprietary |
| Released | 5 Aug 2025 | 19 Nov 2025 |
| Context | 131,072 | - |
| Input $/1M | $0.15 | - |
| Output $/1M | $0.59 | - |
| Cache read $/1M | $0.075 | - |
| Cache write $/1M | - | - |
| Speed | 194 tok/s | 0 tok/s |
| Latency | 0.53 s | 0.00 s |
| Modalities | text | text |
| Providers | - | - |
| Publisher | OpenAI | xAI |
| Reported scores | GPQA Diamond78.2% (AA) Humanity's Last Exam (HLE)19.6% (AA) LiveCodeBench87.8% (AA) MMLU-Pro80.8% (AA) SciCode34.0% (AA) | Infraresolutionbench80.2% (150 samples) Agent Diff Bench62.0% (179 samples) Medpt100.0% (15 samples) Hanabi11.8 (15 samples) SciCode44.2% (AA) |
FAQ
- Is gpt-oss-120b or Grok 4.1 Fast better?
- Across the 20 benchmarks both models report on Sophon, Grok 4.1 Fast leads on 15 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do gpt-oss-120b and Grok 4.1 Fast compare on GPQA Diamond?
- gpt-oss-120b scores 78.2% and Grok 4.1 Fast scores 85.3% on GPQA Diamond.
- When were gpt-oss-120b and Grok 4.1 Fast released?
- gpt-oss-120b was released 5 Aug 2025 by OpenAI. Grok 4.1 Fast was released 19 Nov 2025 by xAI.
Other head-to-heads
56GPT-5.2 vs Grok 4.1 Fast30 shared evalsClaude Opus 4.5 vs Grok 4.1 Fast29 shared evalsClaude Sonnet 4.5 vs Grok 4.1 Fast28 shared evalsGPT-5 Mini vs Grok 4.1 Fast26 shared evalsDeepSeek V3.2 vs Grok 4.1 Fast26 shared evalsGPT-5 Mini vs gpt-oss-120b25 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-5.4 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 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 Sonnet 4.5 vs gpt-oss-120b23 shared evalsClaude Fable 5 vs Grok 4.1 Fast23 shared evalsGLM 5.1 vs Grok 4.1 Fast23 shared evalsDeepSeek V3.2 vs gpt-oss-120b23 shared evalsGPT-5 Nano vs gpt-oss-120b22 shared evalsGPT-5.2 vs gpt-oss-120b22 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 4.5 vs gpt-oss-120b21 shared evalsClaude 4 Sonnet vs gpt-oss-120b21 shared evalsGrok 4.1 Fast vs Qwen3.6 Plus21 shared evalsGPT-5 vs Grok 4.1 Fast20 shared evalsGLM 4.7 vs gpt-oss-120b20 shared evalsGPT-5.5 vs gpt-oss-120b19 shared evalsClaude Opus 4.6 vs gpt-oss-120b19 shared evalsgpt-oss-120b vs Kimi K2.519 shared evalsGLM 5.1 vs gpt-oss-120b19 shared evalsGemini 2.5 Pro vs gpt-oss-120b19 shared evalsGemini 3.1 Pro Preview vs gpt-oss-120b18 shared evalsClaude Opus 4.8 vs gpt-oss-120b18 shared evalsClaude Fable 5 vs gpt-oss-120b18 shared evalsGPT-5.4 vs gpt-oss-120b18 shared evalsClaude Sonnet 4.6 vs gpt-oss-120b18 shared evalsClaude Opus 4.7 vs gpt-oss-120b18 shared evalsGPT-5 vs gpt-oss-120b17 shared evalsGPT-4o vs gpt-oss-120b17 shared evalsGPT-5.4 Mini vs gpt-oss-120b17 shared evalsGPT-4.1 vs gpt-oss-120b16 shared evalsgpt-oss-120b vs Qwen3.6 Plus16 shared evalsGPT-4o vs Grok 4.1 Fast16 shared evalsGPT-4.1 Mini vs gpt-oss-120b15 shared evalsGPT-4o-mini vs Grok 4.1 Fast15 shared evalsGPT-4o-mini vs gpt-oss-120b15 shared evalsGPT-4.1 Mini vs Grok 4.1 Fast14 shared evalsGPT-4.1 Nano vs Grok 4.1 Fast14 shared evalsGPT-4.1 Nano vs gpt-oss-120b14 shared evalsGPT-4.1 vs Grok 4.1 Fast13 shared evalsGPT-6 Astra vs Grok 4.1 Fast10 shared evalsGPT-6 Astra vs gpt-oss-120b6 shared evals
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