GLM 5 vs GLM 5.1
Head to head on 20 shared benchmarks, with price, context window, and release dates.
Benchmark scores
44evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GLM 5 Zai | 62.9% | 1598elo | 70.9 | 16.4% | 66.6% | 7.6% | 55.2% | 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% | - | - | 97.9 | 82.7% | 48395 | - | - | - | - | - | - | 73.3 | 69.7% | 72.8% | 61.12 | - | - | 56.4% |
| GLM 5.1 Zai | 64.5% | 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% | 36.1% | 71.2% | 35.6% | 31.5% | 97.1% | 20.8% | 35.9% | 1.13 | 40.0% | - | 44.8% | - | 34.7% | 15.1% | - | - | - | 41.6% | 72.3% | 85.4% | 22.2% | 34.6% | 5.24 | - | - | - | - | 69.8 | 52.5% | 53.6% |
2 / 2 models
| Attribute | GLM 5 Zai | GLM 5.1 Zai |
|---|---|---|
| Description | GLM-5 is an AI model from Zai, released with open weights. | GLM-5.1 is an AI model from Zai, released with open weights. |
| Family | Glm | Glm |
| Params | - | - |
| Open weights | open | open |
| License | mit | mit |
| Released | 11 Feb 2026 | 7 Apr 2026 |
| Context | 204,800 | 204,800 |
| Input $/1M | $1.00 | $1.39 |
| Output $/1M | $3.20 | $4.40 |
| Cache read $/1M | $0.120 | $0.234 |
| Cache write $/1M | - | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text | text |
| Providers | - | - |
| Publisher | Zai | Zai |
| 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) | 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 or GLM 5.1 better?
- Across the 20 benchmarks both models report on Sophon, GLM 5.1 leads on 13 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do GLM 5 and GLM 5.1 compare on GPQA Diamond?
- GLM 5 scores 66.6% and GLM 5.1 scores 83.9% on GPQA Diamond.
- Which is cheaper, GLM 5 or GLM 5.1?
- GLM 5 is cheaper at $3.20 per million output tokens against $4.40 for GLM 5.1 - about 1.4x.
- When were GLM 5 and GLM 5.1 released?
- GLM 5 was released 11 Feb 2026 by Zai. GLM 5.1 was released 7 Apr 2026 by Zai.
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