AI model comparisons
Claude Fable 5.1 vs GPT-6 Astra
Claude Fable 5.1 from Anthropic and GPT-6 Astra from OpenAI, side by side. Check the specs, then run your own prompt on both.
| Specs | Claude Fable 5.1 | GPT-6 Astra |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Minimum plan | Basic | Basic |
| Context window | 1M tokens | 1.05M tokens |
| Reasoning | Yes | Yes |
| Web search | Yes | No |
About Claude Fable 5.1
Claude Fable 5.1 is tuned for long-context creative and analytical work, with more efficient reasoning and improved coding accuracy over Fable 5. Supports reasoning and web search.
About GPT-6 Astra
GPT-6 Astra is a frontier reasoning model built for advanced coding, multistep tool use, and complex professional work.
Run the same prompt on both
Open both models in Split view with one prompt, or chat with each one separately.
Step through a tough problem
Work through this carefully, show your reasoning, and state your confidence at the end:
Compare side by sideFind the flaw
Here is an argument. Find weak points, hidden assumptions, and a stronger alternative:
Compare side by sideFAQ
Claude Fable 5.1 vs GPT-6 Astra FAQ
Claude Fable 5.1 vs GPT-6 Astra
Start for free, switch models instantly, upgrade only when you need more.