Claude Fable 5 vs GLM 5
Head to head on 18 shared benchmarks, with price, context window, and release dates.
Benchmark scores
51evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Fable 5 Anthropic | 71.8% | 1933elo | 83 | 92.6% | 55.5% | 63.5% | 81.4% | 78.6% | 80.0% | 59.9% | 88.5% | 93.9% | 87.3% | 60.2% | 76.9% | 62.9% | 90.4% | 98.5% | 17.4% | 83.9% | 38.6% | 90.0% | - | 1340elo | 78.0% | 56.3% | - | 29.3% | - | 29.8% | 1932elo | 66.0% | - | - | - | 13.3% | - | 56.1% | 88.5% | 68.9% | 85.0% | 95.0% | 51.9% | - | - | - | 80.3% | - | 88.0% | 66.0% | 74.2% | 69.4% |
| GLM 5 Zai | 62.9% | 1598elo | 70.9 | 66.6% | 7.6% | 55.2% | 71.2% | 73.6% | 67.9% | 55.3% | 77.5% | 83.5% | 69.1% | 38.3% | 70.0% | 39.4% | 23.4% | 97.4% | - | - | - | - | 7.9% | - | - | - | 24.7% | - | 16.4% | - | - | - | 97.9 | 82.7% | 48395 | - | 65.2% | - | - | - | - | - | - | 73.3 | 69.7% | 72.8% | - | 61.12 | - | - | - | 56.4% |
2 / 2 models
| Attribute | Claude Fable 5 Anthropic | GLM 5 Zai |
|---|---|---|
| Description | Claude Fable 5 is Anthropic's most capable widely released model, built for the most demanding reasoning and long-horizon agentic work. Shares its base model with the invitation-only Claude Mythos 5. | GLM-5 is an AI model from Zai, released with open weights. |
| Family | Claude | Glm |
| Params | - | - |
| Open weights | closed | open |
| License | - | mit |
| Released | 9 Jun 2026 | 11 Feb 2026 |
| Context | 1,000,000 | 204,800 |
| Input $/1M | $10.00 | $1.00 |
| Output $/1M | $50.00 | $3.20 |
| Cache read $/1M | $1.000 | $0.120 |
| Cache write $/1M | $12.500 | - |
| Speed | 66 tok/s | 0 tok/s |
| Latency | 49.62 s | 0.00 s |
| Modalities | text, image, file | text |
| Providers | - | - |
| Publisher | Anthropic | Zai |
| Reported scores | Finance Agent (v2)56.3% IFBench63.5% (AA) Swebenchpro80.3% LiveBench - Math93.9% (LiveBench) LiveBench - Coding78.6% (LiveBench) | 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) |
FAQ
- Is Claude Fable 5 or GLM 5 better?
- Across the 18 benchmarks both models report on Sophon, Claude Fable 5 leads on 18 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Fable 5 and GLM 5 compare on GPQA Diamond?
- Claude Fable 5 scores 92.6% and GLM 5 scores 66.6% on GPQA Diamond.
- Which is cheaper, Claude Fable 5 or GLM 5?
- GLM 5 is cheaper at $3.20 per million output tokens against $50.00 for Claude Fable 5 - about 15.6x.
- When were Claude Fable 5 and GLM 5 released?
- Claude Fable 5 was released 9 Jun 2026 by Anthropic. GLM 5 was released 11 Feb 2026 by Zai.
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