GLM 5.1 vs GPT-4o-mini
Head to head on 12 shared benchmarks, with price, context window, and release dates.
Benchmark scores
59evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GLM 5.1 Zai | 64.5% | 1592elo | 86.8% | 30.1% | 76.3% | 72.7% | 75.4% | 68.5% | 71.8% | 85.4% | 44.8% | 71.2% | - | - | - | - | - | 20.8% | 35.9% | 1.13 | - | - | 35.0% | - | 73.5 | 44.8% | 33.5% | 34.7% | 15.1% | - | - | - | - | 63.2% | 84.9% | 72.5% | - | - | 67.0% | 41.6% | - | 72.3% | - | - | 22.2% | - | 34.6% | 5.24 | - | 43.2% | 69.8 | - | 52.5% | 31.5% | - | - | - | - | 97.7% | 55.0% |
| GPT-4o-mini OpenAI | 45.5% | 873elo | 42.6% | 4.2% | 31.0% | 47.2% | 43.0% | 65.8% | 32.9% | 64.8% | 22.9% | 60.5% | 16.7% | 3.6% | 11.7% | 14.7% | 50.7% | - | - | - | 0.29 | 0.0% | - | 0.0% | - | - | - | - | - | 0.0% | 1.54 | 0.0% | 72.0% | - | - | - | 23.4% | 78.9% | - | - | 62.8% | - | 54.5% | 78.0% | - | 3.81 | - | - | 100.0% | - | - | 0.36 | - | - | 0.78 | 83.3% | 54.5% | 22.5% | - | 39.6% |
2 / 2 models
| Attribute | GLM 5.1 Zai | GPT-4o-mini OpenAI |
|---|---|---|
| Description | GLM-5.1 is an AI model from Zai, released with open weights. | GPT-4o Mini is an AI model from OpenAI. |
| Family | Glm | GPT |
| Params | - | - |
| Open weights | open | closed |
| License | mit | proprietary |
| Released | 7 Apr 2026 | 18 Jul 2024 |
| Context | 204,800 | 128,000 |
| Input $/1M | $1.28 | $0.15 |
| Output $/1M | $4.07 | $0.60 |
| Cache read $/1M | $0.179 | $0.075 |
| Cache write $/1M | - | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text | text, image, file |
| Providers | - | - |
| Publisher | Zai | OpenAI |
| Reported scores | IFBench76.3% (AA) τ²-bench (Tau²-bench)97.7% (AA) Terminal-Bench (Hard)43.2% (AA) Vals Index52.5% Vibe Code Bench v1.131.5% |
FAQ
- Is GLM 5.1 or GPT-4o-mini better?
- Across the 12 benchmarks both models report on Sophon, GLM 5.1 leads on 12 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do GLM 5.1 and GPT-4o-mini compare on GPQA Diamond?
- GLM 5.1 scores 86.8% and GPT-4o-mini scores 42.6% on GPQA Diamond.
- Which is cheaper, GLM 5.1 or GPT-4o-mini?
- GPT-4o-mini is cheaper at $0.60 per million output tokens against $4.07 for GLM 5.1 - about 6.8x.
- When were GLM 5.1 and GPT-4o-mini released?
- GLM 5.1 was released 7 Apr 2026 by Zai. GPT-4o-mini was released 18 Jul 2024 by OpenAI.
Other head-to-heads
56Gemini 3.1 Pro Preview vs GLM 5.132 shared evalsGLM 5.1 vs GPT-5.531 shared evalsClaude Opus 4.7 vs GLM 5.128 shared evalsClaude Opus 4.8 vs GLM 5.127 shared evalsClaude Opus 4.6 vs GLM 5.127 shared evalsGLM 5.1 vs GPT-5.426 shared evalsGLM 5.1 vs Kimi K2.526 shared evalsGLM 5.1 vs GPT-5 Mini25 shared evalsGLM 5.1 vs GPT-5.225 shared evalsClaude Fable 5 vs GLM 5.125 shared evalsClaude Sonnet 4.6 vs GLM 5.125 shared evalsDeepSeek V3.2 vs GLM 5.124 shared evalsGLM 5.1 vs GPT-5.4 Mini24 shared evalsClaude Sonnet 4.5 vs GLM 5.123 shared evalsClaude Opus 4.5 vs GLM 5.123 shared evalsGLM 5.1 vs Qwen3.6 Plus23 shared evalsGLM 5.1 vs Grok 4.1 Fast23 shared evalsGPT-4.1 Mini vs GPT-4o-mini22 shared evalsGLM 4.7 vs GLM 5.122 shared evalsGLM 5.1 vs GPT-5 Nano21 shared evalsGPT-4o vs GPT-4o-mini21 shared evalsClaude 4 Sonnet vs GLM 5.120 shared evalsGemini 2.5 Pro vs GPT-4o-mini19 shared evalsGemini 2.5 Pro vs GLM 5.119 shared evalsGLM 5.1 vs gpt-oss-120b19 shared evalsGPT-4o-mini vs GPT-5 Mini18 shared evalsClaude 4 Sonnet vs GPT-4o-mini18 shared evalsClaude Sonnet 4.5 vs GPT-4o-mini17 shared evalsGPT-4.1 Nano vs GPT-4o-mini17 shared evalsGPT-4o-mini vs GPT-516 shared evalsGLM 5.1 vs GPT-516 shared evalsGPT-4o-mini vs GPT-5 Nano16 shared evalsGPT-4.1 vs GPT-4o-mini16 shared evalsGPT-4o-mini vs GPT-5.215 shared evalsClaude Opus 4.5 vs GPT-4o-mini15 shared evalsDeepSeek V3.2 vs GPT-4o-mini15 shared evalsGPT-4o-mini vs Grok 4.1 Fast15 shared evalsGPT-4o-mini vs gpt-oss-120b15 shared evalsGLM 4.7 vs GPT-4o-mini14 shared evalsGLM 5.1 vs GPT-6 Astra14 shared evalsGLM 5.1 vs GPT-4o14 shared evalsGPT-4o-mini vs GPT-5.513 shared evalsGemini 3.1 Pro Preview vs GPT-4o-mini12 shared evalsClaude Opus 4.8 vs GPT-4o-mini12 shared evalsClaude Fable 5 vs GPT-4o-mini12 shared evalsClaude Opus 4.6 vs GPT-4o-mini12 shared evalsGPT-4o-mini vs GPT-5.412 shared evalsGPT-4o-mini vs Kimi K2.512 shared evalsClaude Sonnet 4.6 vs GPT-4o-mini12 shared evalsClaude Opus 4.7 vs GPT-4o-mini12 shared evalsGPT-4o-mini vs GPT-5.4 Mini12 shared evalsGLM 5.1 vs GPT-4.1 Nano12 shared evalsGLM 5.1 vs GPT-4.1 Mini11 shared evalsGLM 5.1 vs GPT-4.111 shared evalsGPT-4o-mini vs Qwen3.6 Plus11 shared evalsGPT-4o-mini vs GPT-6 Astra4 shared evals
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