GLM 5.1 vs GPT-5.4
Head to head on 26 shared benchmarks, with price, context window, and release dates.
Benchmark scores
48evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GPT-5.4 OpenAI | 13.1% | 65.3% | 81.0% | 1836elo | 78.3 | 47.6% | 74.8% | 11.3% | 48.4% | 82.0% | 77.5% | 79.3% | 70.2% | 82.6% | 94.1% | 88.1% | 82.8% | 41.3% | 77.5% | 56.0% | 47.1% | 74.0% | 37.9% | 80 | 67.4% | 36.0% | - | - | 1.47 | 34.1% | 9.0% | 1272elo | - | - | 87.2% | - | 78.5% | 92063 | - | 68.3% | 86 | 52.2% | 43.3% | - | - | -0.61 | 40.8 | - | 60.3% |
| GLM 5.1 Zai | 35.9% | 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% | 22.2% | 36.1% | 71.2% | 35.6% | 69.8 | 31.5% | 97.1% | 20.8% | 1.13 | - | - | - | - | 44.8% | 34.7% | - | 15.1% | - | - | 85.4% | - | - | - | - | 34.6% | 5.24 | - | - | 52.5% | 53.6% |
2 / 2 models
| Attribute | GLM 5.1 Zai | GPT-5.4 OpenAI |
|---|---|---|
| Description | GLM-5.1 is an AI model from Zai, released with open weights. | GPT-5.4 is an AI model from OpenAI. |
| Family | Glm | GPT |
| Params | - | - |
| Open weights | open | closed |
| License | mit | proprietary |
| Released | 7 Apr 2026 | 5 Mar 2026 |
| Context | 204,800 | 1,050,000 |
| Input $/1M | $1.39 | $2.50 |
| Output $/1M | $4.40 | $15.00 |
| Cache read $/1M | $0.234 | $0.250 |
| 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 | 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% | GPQA Diamond74.8% (AA) SciCode47.1% (AA) τ²-bench (Tau²-bench)36.0% (AA) Terminal-Bench (Hard)37.9% (AA) Vibe Code Bench v1.167.4% |
FAQ
- Is GLM 5.1 or GPT-5.4 better?
- Across the 26 benchmarks both models report on Sophon, GPT-5.4 leads on 20 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do GLM 5.1 and GPT-5.4 compare on GPQA Diamond?
- GLM 5.1 scores 83.9% and GPT-5.4 scores 74.8% on GPQA Diamond.
- Which is cheaper, GLM 5.1 or GPT-5.4?
- GLM 5.1 is cheaper at $4.40 per million output tokens against $15.00 for GPT-5.4 - about 3.4x.
- When were GLM 5.1 and GPT-5.4 released?
- GLM 5.1 was released 7 Apr 2026 by Zai. GPT-5.4 was released 5 Mar 2026 by OpenAI.
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