GLM 5 vs Grok 4.1 Fast
Head to head on 20 shared benchmarks, with price, context window, and release dates.
Benchmark scores
41evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GLM 5 Zai | 62.9% | 1598elo | 70.9 | 66.6% | 7.6% | 55.2% | 82.7% | 71.2% | 73.6% | 67.9% | 55.3% | 77.5% | 83.5% | 69.1% | 65.2% | 38.3% | 70.0% | 39.4% | 23.4% | 97.4% | - | - | 7.9% | 24.7% | 16.4% | - | 97.9 | - | 48395 | - | - | - | - | - | - | - | - | 73.3 | 69.7% | 72.8% | 61.12 | 56.4% |
| 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% | 29.6% | 73.1% | 14.4% | 1.2% | 63.7% | 62.0% | 34.3% | - | - | - | 11.8 | - | 35.0% | - | 39.9% | 28.1% | 100.0% | 78.7% | 74.3% | 42.6% | 4.0% | 31.3% | - | - | - | - | 51.0% |
2 / 2 models
| Attribute | GLM 5 Zai | Grok 4.1 Fast xAI |
|---|---|---|
| Description | GLM-5 is an AI model from Zai, released with open weights. | Grok 4.1 Fast is an AI model from xAI. |
| Family | Glm | Grok |
| Params | - | - |
| Open weights | open | closed |
| License | mit | proprietary |
| Released | 11 Feb 2026 | 19 Nov 2025 |
| Context | 204,800 | - |
| Input $/1M | $1.00 | - |
| Output $/1M | $3.20 | - |
| Cache read $/1M | $0.120 | - |
| Cache write $/1M | - | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text | text |
| Providers | - | - |
| Publisher | Zai | xAI |
| Reported scores | GPQA Diamond66.6% (AA) Humanity's Last Exam (HLE)7.6% (AA) IFBench55.2% (AA) SciCode38.3% (AA) τ²-bench (Tau²-bench)97.4% (AA) | Infraresolutionbench80.2% (150 samples) Agent Diff Bench62.0% (179 samples) Medpt100.0% (15 samples) Hanabi11.8 (15 samples) SciCode29.6% (AA) |
FAQ
- Is GLM 5 or Grok 4.1 Fast better?
- Across the 20 benchmarks both models report on Sophon, GLM 5 leads on 16 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do GLM 5 and Grok 4.1 Fast compare on GPQA Diamond?
- GLM 5 scores 66.6% and Grok 4.1 Fast scores 63.7% on GPQA Diamond.
- When were GLM 5 and Grok 4.1 Fast released?
- GLM 5 was released 11 Feb 2026 by Zai. Grok 4.1 Fast was released 19 Nov 2025 by xAI.
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