Claude Fable 5 vs GPT-4o
Head to head on 13 shared benchmarks, with price, context window, and release dates.
Benchmark scores
60evals · sort by any column, ⤢ to expand fullscreen
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| Claude Fable 5 Anthropic | 71.8% | 92.6% | 55.5% | 63.5% | 81.4% | 78.6% | 59.9% | 88.5% | 68.9% | 60.2% | 76.9% | 62.9% | 98.5% | - | - | - | - | 17.4% | - | 83.9% | 38.6% | - | 87.0% | - | 1340elo | 1943elo | 83 | 78.0% | 56.3% | 29.3% | - | 29.8% | 1932elo | - | 66.0% | 13.3% | - | 80.0% | 93.9% | 87.3% | - | - | 56.1% | - | 88.5% | - | 85.0% | - | 95.0% | 51.9% | - | - | 80.3% | - | 88.0% | - | 61.4% | 74.2% | 90.4% | - | 69.2% |
| GPT-4o OpenAI | 45.9% | 54.3% | 2.4% | 34.3% | 55.1% | 46.1% | 70.1% | 49.0% | 57.4% | 33.3% | 74.5% | 8.3% | 25.1% | 18.2% | 15.0% | 6.0% | 38 | - | 0.0% | - | - | 0.33 | - | 6.1% | - | - | - | - | - | - | 0.3% | - | - | 96.1 | - | - | 0.0% | - | - | - | 30.9% | 75.9% | - | 10.8% | - | 74.8% | - | 54.0% | - | - | 5.71 | 21.6% | - | 61.2 | - | 0.98 | - | - | - | 32.5% | 33.4% |
2 / 2 models
| Attribute | Claude Fable 5 Anthropic | GPT-4o OpenAI |
|---|---|---|
| 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. | GPT-4o is an AI model from OpenAI. |
| Family | Claude | GPT |
| Params | - | - |
| Open weights | closed | closed |
| License | - | proprietary |
| Released | 9 Jun 2026 | 20 Nov 2024 |
| Context | 1,000,000 | 128,000 |
| Input $/1M | $10.00 | $2.50 |
| Output $/1M | $50.00 | $10.00 |
| Cache read $/1M | $1.000 | $1.250 |
| Cache write $/1M | $12.500 | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image, file | text, image, file |
| Providers | - | - |
| Publisher | Anthropic | OpenAI |
| Reported scores | Finance Agent (v2)56.3% IFBench63.5% (AA) Swebenchpro80.3% LiveBench - Math93.9% (LiveBench) LiveBench - Coding78.6% (LiveBench) | Taubench61.2 pass^1 GSM8K96.1 Accuracy ScholarSearch5.71 Social Sciences & Humanities (%) MortgageTax57.4% AIME202438 pass@1 |
FAQ
- Is Claude Fable 5 or GPT-4o better?
- Across the 13 benchmarks both models report on Sophon, Claude Fable 5 leads on 12 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Fable 5 and GPT-4o compare on GPQA Diamond?
- Claude Fable 5 scores 92.6% and GPT-4o scores 54.3% on GPQA Diamond.
- Which is cheaper, Claude Fable 5 or GPT-4o?
- GPT-4o is cheaper at $10.00 per million output tokens against $50.00 for Claude Fable 5 - about 5.0x.
- When were Claude Fable 5 and GPT-4o released?
- Claude Fable 5 was released 9 Jun 2026 by Anthropic. GPT-4o was released 20 Nov 2024 by OpenAI.
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 evalsClaude Fable 5 vs Claude Opus 4.626 shared evalsClaude Fable 5 vs GPT-5.426 shared evalsClaude Fable 5 vs Kimi K2.526 shared evalsClaude Fable 5 vs GLM 5.125 shared evalsClaude Fable 5 vs GPT-5.4 Mini25 shared evalsClaude Fable 5 vs Claude Sonnet 4.524 shared evalsClaude Fable 5 vs GPT-5.224 shared evalsClaude Fable 5 vs Qwen3.6 Plus24 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 evalsClaude 4 Sonnet vs Claude Fable 522 shared evalsGemini 2.5 Pro vs GPT-4o22 shared evalsClaude Sonnet 4.5 vs GPT-4o21 shared evalsClaude Fable 5 vs GPT-5 Nano21 shared evalsGPT-4o vs GPT-4o-mini21 shared evalsGPT-4.1 Mini vs GPT-4o20 shared evalsGPT-4o vs GPT-5 Mini20 shared evalsClaude Fable 5 vs DeepSeek V3.220 shared evalsClaude Fable 5 vs GLM 4.720 shared evalsClaude 4 Sonnet vs GPT-4o20 shared evalsGPT-4o vs GPT-519 shared evalsClaude Fable 5 vs Gemini 2.5 Pro19 shared evalsGPT-4.1 vs GPT-4o19 shared evalsGPT-4o vs GPT-5 Nano18 shared evalsGPT-4o vs GPT-5.218 shared evalsClaude Opus 4.5 vs GPT-4o18 shared evalsClaude Fable 5 vs GPT-6 Astra18 shared evalsClaude Fable 5 vs gpt-oss-120b18 shared evalsDeepSeek V3.2 vs GPT-4o18 shared evalsGPT-4o vs gpt-oss-120b17 shared evalsClaude Fable 5 vs GPT-516 shared evalsGPT-4.1 Nano vs GPT-4o16 shared evalsGPT-4o vs Grok 4.1 Fast16 shared evalsGLM 4.7 vs GPT-4o16 shared evalsGPT-4o vs GPT-5.515 shared evalsClaude Opus 4.6 vs GPT-4o15 shared evalsGPT-4o vs Kimi K2.515 shared evalsGemini 3.1 Pro Preview vs GPT-4o14 shared evalsClaude Opus 4.8 vs GPT-4o14 shared evalsGPT-4o vs GPT-5.414 shared evalsClaude Sonnet 4.6 vs GPT-4o14 shared evalsGLM 5.1 vs GPT-4o14 shared evalsClaude Opus 4.7 vs GPT-4o14 shared evalsGPT-4o vs Qwen3.6 Plus14 shared evalsGPT-4o vs GPT-5.4 Mini14 shared evalsClaude Fable 5 vs GPT-4o-mini12 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 evalsGPT-4o vs GPT-6 Astra4 shared evals
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