Claude Sonnet 4.6 vs GLM 5.1
Head to head on 25 shared benchmarks, with price, context window, and release dates.
Benchmark scores
45evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Sonnet 4.6 Anthropic | 47.6% | 65.3% | 78.0% | 1805elo | 79.9 | 51.0% | 32.4% | 79.7% | 11.2% | 42.4% | 78.4% | 80.0% | 76.1% | 63.9% | 77.7% | 86.5% | 86.4% | 45.0% | 44.1% | 77.1% | 42.4% | 76.3 | 50.6% | 51.5% | 78.9% | 87.1% | - | 47.2% | - | 1.35 | 1207elo | - | - | 92.2% | - | - | - | - | 89.3 | 67.7% | 72.1% | 46.6% | - | - | 60.6% | 62.8% |
| GLM 5.1 Zai | 35.9% | 64.5% | 40.0% | 1589elo | 73.5 | 44.8% | 33.5% | 83.9% | 27.9% | 52.0% | 72.7% | 75.4% | 63.2% | 68.5% | 71.8% | 84.9% | 72.5% | 22.2% | 36.1% | 71.2% | 35.6% | 69.8 | 52.5% | 31.5% | 97.1% | - | 20.8% | - | 1.13 | - | - | 34.7% | 15.1% | - | 67.0% | 41.6% | 72.3% | 85.4% | - | - | - | - | 34.6% | 5.24 | - | 53.6% |
2 / 2 models
| Attribute | Claude Sonnet 4.6 Anthropic | GLM 5.1 Zai |
|---|---|---|
| Description | Claude Sonnet 4.6 is an AI model from Anthropic. | GLM-5.1 is an AI model from Zai, released with open weights. |
| Family | Claude | Glm |
| Params | - | - |
| Open weights | closed | open |
| License | proprietary | mit |
| Released | 17 Feb 2026 | 7 Apr 2026 |
| Context | 1,000,000 | 204,800 |
| Input $/1M | $3.00 | $1.39 |
| Output $/1M | $15.00 | $4.40 |
| Cache read $/1M | $0.300 | $0.234 |
| Cache write $/1M | $3.750 | - |
| Speed | 45 tok/s | 0 tok/s |
| Latency | 1.12 s | 0.00 s |
| Modalities | text, image, file | text |
| Providers | - | - |
| Publisher | Anthropic | Zai |
| Reported scores | GPQA Diamond79.7% (AA) Humanity's Last Exam (HLE)11.2% (AA) IFBench42.4% (AA) SciCode44.1% (AA) τ²-bench (Tau²-bench)78.9% (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 Claude Sonnet 4.6 or GLM 5.1 better?
- Across the 25 benchmarks both models report on Sophon, Claude Sonnet 4.6 leads on 18 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Sonnet 4.6 and GLM 5.1 compare on GPQA Diamond?
- Claude Sonnet 4.6 scores 79.7% and GLM 5.1 scores 83.9% on GPQA Diamond.
- Which is cheaper, Claude Sonnet 4.6 or GLM 5.1?
- GLM 5.1 is cheaper at $4.40 per million output tokens against $15.00 for Claude Sonnet 4.6 - about 3.4x.
- When were Claude Sonnet 4.6 and GLM 5.1 released?
- Claude Sonnet 4.6 was released 17 Feb 2026 by Anthropic. GLM 5.1 was released 7 Apr 2026 by Zai.
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