Claude Fable 5 vs GLM 5
Head to head on 18 shared benchmarks, with price, context window, and release dates.
Benchmark scores
52evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Fable 5 Anthropic | 71.8% | 1944elo | 83 | 85.9% | 55.5% | 63.5% | 81.4% | 78.6% | 80.0% | 59.9% | 88.5% | 93.9% | 87.3% | 61.0% | 76.9% | 62.9% | 90.4% | 98.5% | - | 17.4% | 83.9% | 38.6% | 86.0% | - | 1313elo | 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% | 61.4% | 74.2% | 69.0% |
| GLM 5 Zai | 62.9% | 1601elo | 70.9 | 87.8% | 29.3% | 72.3% | 71.2% | 73.6% | 67.9% | 55.3% | 77.5% | 83.5% | 69.1% | 46.2% | 70.0% | 43.2% | 23.4% | 98.2% | 96.7% | - | - | - | - | 7.9% | - | - | - | 24.7% | - | 16.4% | - | - | - | 97.9 | 82.7% | 48395 | - | 65.2% | - | - | - | - | - | - | 73.3 | 69.7% | 72.8% | - | 61.12 | - | - | - | 61.2% |
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 | $0.200 |
| Cache write $/1M | $12.500 | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image, file | text |
| Providers | - | - |
| Publisher | Anthropic | Zai |
| Reported scores | GPQA Diamond87.8% Humanity's Last Exam (HLE)29.3% (AA) IFBench72.3% (AA) SciCode46.2% (AA) τ²-bench (Tau²-bench)98.2% (AA) |
FAQ
- Is Claude Fable 5 or GLM 5 better?
- Across the 18 benchmarks both models report on Sophon, Claude Fable 5 leads on 16 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 85.9% and GLM 5 scores 87.8% 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.
Other head-to-heads
56Claude Fable 5 vs Claude Opus 4.840 shared evalsClaude Fable 5 vs GPT-5.539 shared evalsClaude Fable 5 vs Gemini 3.1 Pro Preview36 shared evalsClaude Fable 5 vs Claude Sonnet 4.628 shared evalsClaude Fable 5 vs Claude Opus 4.728 shared evalsGLM 5 vs Kimi K2.527 shared evalsClaude Fable 5 vs GPT-5.426 shared evalsClaude Fable 5 vs Claude Opus 4.626 shared evalsClaude Fable 5 vs Kimi K2.526 shared evalsClaude Fable 5 vs GLM 5.125 shared evalsClaude Fable 5 vs Claude Sonnet 4.524 shared evalsClaude Sonnet 4.5 vs GLM 524 shared evalsClaude Fable 5 vs GPT-5.224 shared evalsGLM 5 vs GPT-5.224 shared evalsClaude Opus 4.5 vs GLM 524 shared evalsClaude Fable 5 vs Qwen3.6 Plus24 shared evalsClaude Opus 4.6 vs GLM 524 shared evalsDeepSeek V3.2 vs GLM 524 shared evalsClaude Fable 5 vs GPT-5 Mini23 shared evalsClaude Fable 5 vs Claude Opus 4.523 shared evalsClaude Fable 5 vs Grok 4.1 Fast23 shared evalsGLM 5 vs GPT-5 Mini22 shared evalsClaude 4 Sonnet vs Claude Fable 522 shared evalsGLM 5 vs GPT-5.422 shared evalsClaude Fable 5 vs GPT-5 Nano21 shared evalsGemini 3.1 Pro Preview vs GLM 521 shared evalsGLM 5 vs Grok 4.1 Fast21 shared evalsGLM 5 vs GPT-5.520 shared evalsClaude Opus 4.8 vs GLM 520 shared evalsClaude Fable 5 vs DeepSeek V3.220 shared evalsClaude Fable 5 vs GLM 4.720 shared evalsClaude Sonnet 4.6 vs GLM 520 shared evalsGLM 5 vs GLM 5.120 shared evalsClaude Opus 4.7 vs GLM 520 shared evalsGLM 5 vs Qwen3.6 Plus20 shared evalsGLM 5 vs GPT-5 Nano19 shared evalsClaude 4 Sonnet vs GLM 519 shared evalsClaude Fable 5 vs Gemini 2.5 Pro19 shared evalsGLM 5 vs gpt-oss-120b19 shared evalsGLM 4.7 vs GLM 519 shared evalsClaude Fable 5 vs GPT-6 Astra18 shared evalsClaude Fable 5 vs gpt-oss-120b18 shared evalsGemini 2.5 Pro vs GLM 518 shared evalsClaude Fable 5 vs GPT-516 shared evalsGLM 5 vs GPT-515 shared evalsGLM 5 vs GPT-4o15 shared evalsClaude Fable 5 vs GPT-4o13 shared evalsGLM 5 vs GPT-4.1 Mini12 shared evalsClaude Fable 5 vs GPT-4o-mini12 shared evalsGLM 5 vs GPT-4.112 shared evalsGLM 5 vs GPT-4o-mini12 shared evalsGLM 5 vs GPT-4.1 Nano12 shared evalsClaude Fable 5 vs GPT-4.1 Nano11 shared evalsClaude Fable 5 vs GPT-4.1 Mini10 shared evalsClaude Fable 5 vs GPT-4.110 shared evalsGLM 5 vs GPT-6 Astra7 shared evals
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