GLM 5.1 vs GPT-5.2
Head to head on 25 shared benchmarks, with price, context window, and release dates.
Benchmark scores
53evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GPT-5.2 OpenAI | 65.9% | 60.0% | 1699elo | 71.6 | 40.7% | 71.2% | 8.0% | 47.4% | 78.7% | 76.1% | 78.2% | 61.8% | 79.8% | 93.2% | 83.2% | 72.0% | 49.7% | 84.4% | 81.4% | 15.0% | 40.4% | 75.8% | 31.8% | 53.5% | 46.5% | 51.0% | 100 | - | - | - | 100.0% | 0.0% | 16.7% | 40.6% | 9.4% | - | - | - | 12.93 | 85.0% | 79.0% | 66.9% | 24.0% | 67.1% | 96.7 | 18.7% | 49.3% | - | - | 66.7% | 71.8% | - | - | 56.3% |
| GLM 5.1 Zai | 64.5% | 40.0% | 1589elo | 73.5 | 33.5% | 83.9% | 27.9% | 52.0% | 72.7% | 75.4% | 63.2% | 68.5% | 71.8% | 84.9% | 72.5% | 67.0% | 41.6% | 72.3% | 85.4% | 22.2% | 36.1% | 71.2% | 35.6% | 31.5% | 97.1% | - | - | 20.8% | 35.9% | 1.13 | - | - | - | - | - | 44.8% | 34.7% | 15.1% | - | - | - | - | - | - | - | - | - | 34.6% | 5.24 | - | - | 69.8 | 52.5% | 53.6% |
2 / 2 models
| Attribute | GLM 5.1 Zai | GPT-5.2 OpenAI |
|---|---|---|
| Description | GLM-5.1 is an AI model from Zai, released with open weights. | GPT-5.2 is an AI model from OpenAI. |
| Family | Glm | GPT |
| Params | - | - |
| Open weights | open | closed |
| License | mit | proprietary |
| Released | 7 Apr 2026 | 11 Dec 2025 |
| Context | 204,800 | 400,000 |
| Input $/1M | $1.39 | $1.75 |
| Output $/1M | $4.40 | $14.00 |
| Cache read $/1M | $0.234 | $0.175 |
| Cache write $/1M | - | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text | file, image, text |
| Providers | - | - |
| Publisher | Zai | OpenAI |
| Reported scores | IFBench52.0% (AA) τ²-bench (Tau²-bench)97.1% (AA) Terminal-Bench (Hard)35.6% (AA) Vals Index52.5% Vibe Code Bench v1.131.5% |
FAQ
- Is GLM 5.1 or GPT-5.2 better?
- Across the 25 benchmarks both models report on Sophon, GPT-5.2 leads on 16 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do GLM 5.1 and GPT-5.2 compare on GPQA Diamond?
- GLM 5.1 scores 83.9% and GPT-5.2 scores 71.2% on GPQA Diamond.
- Which is cheaper, GLM 5.1 or GPT-5.2?
- GLM 5.1 is cheaper at $4.40 per million output tokens against $14.00 for GPT-5.2 - about 3.2x.
- When were GLM 5.1 and GPT-5.2 released?
- GLM 5.1 was released 7 Apr 2026 by Zai. GPT-5.2 was released 11 Dec 2025 by OpenAI.
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