GLM 5 vs Grok 4.1 Fast
Head to head on 21 shared benchmarks, with price, context window, and release dates.
Benchmark scores
41evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GLM 5 Zai | 96.7% | 62.9% | 1601elo | 70.9 | 87.8% | 29.3% | 72.3% | 82.7% | 71.2% | 73.6% | 67.9% | 55.3% | 77.5% | 83.5% | 69.1% | 65.2% | 46.2% | 70.0% | 43.2% | 23.4% | 98.2% | - | 7.9% | 24.7% | 16.4% | - | 97.9 | - | 48395 | - | - | - | - | - | - | - | - | 73.3 | 69.7% | 72.8% | 61.12 | 61.2% |
| Grok 4.1 Fast xAI | 89.2% | 66.0% | 1328elo | 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% | 44.2% | 73.1% | 24.2% | 1.2% | 93.3% | 62.0% | - | - | - | 11.8 | - | 35.0% | - | 82.2% | 28.1% | 100.0% | 78.7% | 85.4% | 42.6% | 4.0% | 74.5% | - | - | - | - | 59.8% |
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 | $0.200 | - |
| 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 Diamond87.8% Humanity's Last Exam (HLE)29.3% (AA) IFBench72.3% (AA) SciCode46.2% (AA) τ²-bench (Tau²-bench)98.2% (AA) | Infraresolutionbench80.2% (150 samples) Agent Diff Bench62.0% (179 samples) Medpt100.0% (15 samples) Hanabi11.8 (15 samples) SciCode44.2% (AA) |
FAQ
- Is GLM 5 or Grok 4.1 Fast better?
- Across the 21 benchmarks both models report on Sophon, GLM 5 leads on 17 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 87.8% and Grok 4.1 Fast scores 85.3% 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.
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 evalsGLM 5 vs Kimi K2.527 shared evalsGPT-5 Mini vs Grok 4.1 Fast26 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 evalsGPT-5.4 vs Grok 4.1 Fast25 shared evalsClaude Opus 4.6 vs Grok 4.1 Fast25 shared evalsGrok 4.1 Fast vs Kimi K2.525 shared evalsClaude Sonnet 4.5 vs GLM 524 shared evalsGPT-5 Nano vs Grok 4.1 Fast24 shared evalsGLM 5 vs GPT-5.224 shared evalsClaude Opus 4.8 vs Grok 4.1 Fast24 shared evalsClaude Opus 4.5 vs GLM 524 shared evalsClaude 4 Sonnet vs Grok 4.1 Fast24 shared evalsClaude Opus 4.6 vs GLM 524 shared evalsClaude Opus 4.7 vs Grok 4.1 Fast24 shared evalsDeepSeek V3.2 vs GLM 524 shared evalsGLM 4.7 vs Grok 4.1 Fast24 shared evalsClaude Fable 5 vs Grok 4.1 Fast23 shared evalsGLM 5.1 vs Grok 4.1 Fast23 shared evalsGLM 5 vs GPT-5 Mini22 shared evalsGLM 5 vs GPT-5.422 shared evalsClaude Sonnet 4.6 vs Grok 4.1 Fast22 shared evalsGemini 2.5 Pro vs Grok 4.1 Fast22 shared evalsGemini 3.1 Pro Preview vs GLM 521 shared evalsGrok 4.1 Fast vs Qwen3.6 Plus21 shared evalsGPT-5 vs Grok 4.1 Fast20 shared evalsGLM 5 vs GPT-5.520 shared evalsClaude Opus 4.8 vs GLM 520 shared evalsClaude Sonnet 4.6 vs GLM 520 shared evalsGLM 5 vs GLM 5.120 shared evalsClaude Opus 4.7 vs GLM 520 shared evalsGLM 5 vs Qwen3.6 Plus20 shared evalsgpt-oss-120b vs Grok 4.1 Fast20 shared evalsGLM 5 vs GPT-5 Nano19 shared evalsClaude 4 Sonnet vs GLM 519 shared evalsGLM 5 vs gpt-oss-120b19 shared evalsGLM 4.7 vs GLM 519 shared evalsClaude Fable 5 vs GLM 518 shared evalsGemini 2.5 Pro vs GLM 518 shared evalsGPT-4o vs Grok 4.1 Fast16 shared evalsGLM 5 vs GPT-515 shared evalsGPT-4o-mini vs Grok 4.1 Fast15 shared evalsGLM 5 vs GPT-4o15 shared evalsGPT-4.1 Mini vs Grok 4.1 Fast14 shared evalsGPT-4.1 Nano vs Grok 4.1 Fast14 shared evalsGPT-4.1 vs Grok 4.1 Fast13 shared evalsGLM 5 vs GPT-4.1 Mini12 shared evalsGLM 5 vs GPT-4.112 shared evalsGLM 5 vs GPT-4o-mini12 shared evalsGLM 5 vs GPT-4.1 Nano12 shared evalsGPT-6 Astra vs Grok 4.1 Fast10 shared evalsGLM 5 vs GPT-6 Astra7 shared evals
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