Gemini 2.5 Pro vs GLM 5.1
Head to head on 19 shared benchmarks, with price, context window, and release dates.
Benchmark scores
49evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gemini 2.5 Pro Google (Alphabet Inc.) | 60.8% | 1419elo | 58.8 | 14.1% | 84.4% | 22.5% | 48.7% | 77.9% | 86.7% | 81.0% | 65.9% | 50.6% | 73.6% | 86.2% | 42.8% | 72.9% | 26.5% | 0.4% | 54.1% | 83.1% | 88.7% | 87.7% | - | 50.4% | - | - | - | 45.2% | 15.9% | - | - | - | - | - | - | 80.1% | 96.7% | - | 68.9% | 70.0% | - | 41.9% | - | 55.6 | - | 53.6% | - | - | 53.3% | 59.5% |
| GLM 5.1 Zai | 64.5% | 1589elo | 73.5 | 33.5% | 83.9% | 27.9% | 52.0% | 72.7% | 75.4% | 68.5% | 71.8% | 41.6% | 72.3% | 85.4% | 36.1% | 71.2% | 35.6% | 31.5% | 97.1% | - | - | - | 20.8% | - | 35.9% | 1.13 | 40.0% | - | - | 44.8% | 34.7% | 15.1% | 63.2% | 84.9% | 72.5% | - | - | 67.0% | - | - | 22.2% | - | 34.6% | - | 5.24 | - | 69.8 | 52.5% | - | 53.6% |
2 / 2 models
| Attribute | Gemini 2.5 Pro Google (Alphabet Inc.) | GLM 5.1 Zai |
|---|---|---|
| Description | Gemini 2.5 Pro is an AI model from Google (Alphabet Inc.). | GLM-5.1 is an AI model from Zai, released with open weights. |
| Family | Gemini | Glm |
| Params | - | - |
| Open weights | closed | open |
| License | proprietary | mit |
| Released | 5 Jun 2025 | 7 Apr 2026 |
| Context | 1,048,576 | 204,800 |
| Input $/1M | $1.25 | $1.39 |
| Output $/1M | $10.00 | $4.40 |
| Cache read $/1M | $0.125 | $0.234 |
| Cache write $/1M | $0.375 | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image, file, audio, video | text |
| Providers | - | - |
| Publisher | Google (Alphabet Inc.) | Zai |
| 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 Gemini 2.5 Pro or GLM 5.1 better?
- Across the 19 benchmarks both models report on Sophon, GLM 5.1 leads on 10 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Gemini 2.5 Pro and GLM 5.1 compare on GPQA Diamond?
- Gemini 2.5 Pro scores 84.4% and GLM 5.1 scores 83.9% on GPQA Diamond.
- Which is cheaper, Gemini 2.5 Pro or GLM 5.1?
- GLM 5.1 is cheaper at $4.40 per million output tokens against $10.00 for Gemini 2.5 Pro - about 2.3x.
- When were Gemini 2.5 Pro and GLM 5.1 released?
- Gemini 2.5 Pro was released 5 Jun 2025 by Google (Alphabet Inc.). GLM 5.1 was released 7 Apr 2026 by Zai.
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