Claude Fable 5 vs GPT-6 Astra
Head to head on 18 shared benchmarks, with price, context window, and release dates.
Benchmark scores
58evals · sort by any column, ⤢ to expand fullscreen
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| GPT-6 Astra OpenAI | 41.4% | 92.0% | 2164elo | 82.8 | 100.0% | 53.5% | 53.3% | 96.1% | 63.4% | 54.7% | 48.5% | 87.9% | 99.0% | 46.4% | 56.5% | 57.9% | 66.6% | 89.6% | 59.3% | 95.0% | 98.5% | 99.9% | 95.9% | - | - | 91.5% | - | 74.1% | - | 42.4% | 97.6% | - | - | 37.8% | - | - | 60.3% | - | - | - | - | - | - | - | - | 96.3% | 0.84 | 72.6% | - | 92.7% | 85.4% | 88.0% | - | - | - | 64.6% | - | - | 74.5% |
| Claude Fable 5 Anthropic | 17.4% | 88.0% | 1935elo | 83 | 78.0% | 56.3% | 29.3% | 92.6% | 66.0% | 55.5% | 56.1% | 88.5% | 95.0% | 51.9% | 60.2% | 88.0% | 66.0% | 90.4% | - | - | - | - | - | 83.9% | 38.6% | - | 71.8% | - | 1340elo | - | - | 29.8% | 1932elo | - | 63.5% | 13.3% | - | 81.4% | 78.6% | 80.0% | 59.9% | 88.5% | 93.9% | 87.3% | 68.9% | - | - | - | 85.0% | - | - | - | 80.3% | 76.9% | 62.9% | - | 74.2% | 98.5% | 69.3% |
2 / 2 models
| Attribute | Claude Fable 5 Anthropic | GPT-6 Astra 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. | OpenAI's GPT-6 flagship, launched as its best computer-use model: it drives browsers, spreadsheets and desktop applications rather than answering questions about them. Built on OpenAI's largest training run to date and the first model it designates Critical for cybersecurity capability. Rolling out from Daybreak enterprise access to ChatGPT and the API; Pro, Business and Enterprise plans also get a GPT-6 Astra Pro tier. |
| Family | Claude | GPT |
| Params | - | - |
| Open weights | closed | closed |
| License | - | - |
| Released | 9 Jun 2026 | 3 Sep 2026 |
| Context | 1,000,000 | 1,050,000 |
| Input $/1M | $10.00 | $10.00 |
| Output $/1M | $50.00 | $50.00 |
| Cache read $/1M | $1.000 | $1.000 |
| Cache write $/1M | $12.500 | $12.500 |
| Speed | 62 tok/s | 63 tok/s |
| Latency | 50.98 s | 198.54 s |
| Modalities | text, image, file | file, image, text |
| Providers | - | openai |
| Publisher | Anthropic | OpenAI |
| Reported scores | Finance Agent (v2)56.3% IFBench63.5% (AA) Swebenchpro80.3% LiveBench - Math93.9% (LiveBench) LiveBench - Coding78.6% (LiveBench) |
FAQ
- Is Claude Fable 5 or GPT-6 Astra better?
- Across the 18 benchmarks both models report on Sophon, Claude Fable 5 leads on 10 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Fable 5 and GPT-6 Astra compare on GPQA Diamond?
- Claude Fable 5 scores 92.6% and GPT-6 Astra scores 96.1% on GPQA Diamond.
- When were Claude Fable 5 and GPT-6 Astra released?
- Claude Fable 5 was released 9 Jun 2026 by Anthropic. GPT-6 Astra was released 3 Sep 2026 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 evalsClaude Fable 5 vs GPT-5 Nano21 shared evalsClaude Fable 5 vs DeepSeek V3.220 shared evalsClaude Fable 5 vs GLM 4.720 shared evalsGPT-5.5 vs GPT-6 Astra19 shared evalsClaude Opus 4.8 vs GPT-6 Astra19 shared evalsClaude Fable 5 vs Gemini 2.5 Pro19 shared evalsClaude Fable 5 vs gpt-oss-120b18 shared evalsClaude Fable 5 vs GPT-516 shared evalsGemini 3.1 Pro Preview vs GPT-6 Astra16 shared evalsClaude Opus 4.7 vs GPT-6 Astra14 shared evalsGLM 5.1 vs GPT-6 Astra14 shared evalsGPT-5.2 vs GPT-6 Astra13 shared evalsClaude Fable 5 vs GPT-4o13 shared evalsClaude Opus 4.6 vs GPT-6 Astra13 shared evalsGPT-5.4 vs GPT-6 Astra13 shared evalsGPT-6 Astra vs Kimi K2.513 shared evalsClaude Sonnet 4.6 vs GPT-6 Astra13 shared evalsGPT-5 Mini vs GPT-6 Astra12 shared evalsGPT-5 vs GPT-6 Astra12 shared evalsClaude Fable 5 vs GPT-4o-mini12 shared evalsGPT-5.4 Mini vs GPT-6 Astra12 shared evalsClaude Sonnet 4.5 vs GPT-6 Astra11 shared evalsClaude Opus 4.5 vs GPT-6 Astra11 shared evalsClaude Fable 5 vs GPT-4.1 Nano11 shared evalsGPT-6 Astra vs Qwen3.6 Plus11 shared evalsClaude Fable 5 vs GPT-4.1 Mini10 shared evalsGPT-5 Nano vs GPT-6 Astra10 shared evalsClaude Fable 5 vs GPT-4.110 shared evalsGemini 2.5 Pro vs GPT-6 Astra10 shared evalsGPT-6 Astra vs Grok 4.1 Fast10 shared evalsDeepSeek V3.2 vs GPT-6 Astra9 shared evalsGLM 4.7 vs GPT-6 Astra9 shared evalsClaude 4 Sonnet vs GPT-6 Astra8 shared evalsGPT-4.1 Mini vs GPT-6 Astra6 shared evalsGPT-4.1 Nano vs GPT-6 Astra6 shared evalsGPT-6 Astra vs gpt-oss-120b6 shared evalsGPT-4.1 vs GPT-6 Astra5 shared evalsGPT-4o-mini vs GPT-6 Astra4 shared evalsGPT-4o vs GPT-6 Astra4 shared evals
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