Claude Fable 5.1
Anthropic's most capable model in the menu. Choose it when quality matters more than speed.
| Model id | claude-fable-5.1 |
| Made by | Anthropic |
| Context window | 200 000 tokens |
| Longest single answer | Not published yet |
| Reads images | Yes |
| Uses document tools | Yes |
| Plans | Light and Pro |
| Price | Included in your plan. Beyond your monthly allowance, billed per use if you turned on overage. |
Strengths
- Demanding analysis and argument
- Nuanced writing and editing
- Complex financial models in Calc
Used for
- Every request you send while it is selected, including the steps the assistant runs in the background for that request (planning, checking its work, summarising the conversation).
Larger and longer requests draw more of your allowance than short ones, whichever model you choose. See Usage.