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Step 5 Preview
Grok 4.1 Fast Non-Reasoning
Grok 4.1 Fast Non-Reasoning is a proprietary model from xAI. Its best result is #105 of 138 on GPQA Diamond with 65.15%.
- Developer
- xAI
- Released
- —
- Context window
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- Price in / out, per 1M tokens
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- Weights
- Proprietary
- Inputs
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- Reasoning
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- Tool use
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Benchmarks
| Benchmark | Score bar | Accuracy | Rank | Cost / test |
|---|---|---|---|---|
| LiveCodeBenchCoding | 42.62% | 127 / 143 | $0.2 / $0.5 | |
| MedCodeMedicine | 28.35% | 100 / 107 | $0.2 / $0.5 | |
| MedQAMedicine | 76.03% | 77 / 92 | $0.2 / $0.5 | |
| GPQA DiamondReasoning | 65.15% | 105 / 138 | $0.2 / $0.5 | |
| MMLU-ProReasoning | 75.21% | 114 / 138 | $0.2 / $0.5 | |
| AIMEReasoning | 27.08% | 75 / 96 | $0.2 / $0.5 | |
| MMMUReasoning | 63.70% | 79 / 93 | $0.2 / $0.5 |
Vals AI, as of Oct 24, 2026.
Compare Grok 4.1 Fast Non-Reasoning
xAI
The lab behind Grok, trained on one of the largest compute clusters and integrated with X. Founded 2023, based in San Francisco Bay Area. x.ai
Questions
Who makes Grok 4.1 Fast Non-Reasoning?
Grok 4.1 Fast Non-Reasoning is made by xAI, founded 2023 and based in San Francisco Bay Area.
Is Grok 4.1 Fast Non-Reasoning open source?
No. Grok 4.1 Fast Non-Reasoning is proprietary and served through its provider’s API.