Claude Fable 5.2
Claude Fable 5.2 is Anthropic's most capable model for the most demanding technical work, with gains over Fable 5.1 in coding, reasoning, and vision.
Specifications
| Lab | Anthropic |
|---|---|
| Context window | 1M tokens |
| Input price | $8.00/1M |
| Output price | $40.00/1M |
| Release | Nov 2026 |
Strengths
- Most capable Anthropic model for demanding technical work
- Gains over Fable 5.1 in coding, reasoning, and vision
- 1M-token context with 128K max output
- Strong multi-effort reasoning controls
Weaknesses
- Flagship pricing ($8 in / $40 out per M tokens)
- Limited independent benchmark history as a new release
Best for
- Autonomous software engineering
- Long-running research agents
- Complex tool-using workflows
In Depth: Claude Fable 5.2
Summary
Claude Fable 5.2 is an AI model from Anthropic.
Released in Nov 2026. It takes text, image, and file input and produces text output, with a context window of 1M tokens. Input pricing is $8.00 per 1M tokens and output is $40.00 per 1M tokens on OpenRouter.