# Claude Fable 5.1

> Anthropic model for code, knowledge work and long-running tasks

- Category: Agents & dev (`agents`)
- Official: https://www.anthropic.com/claude-fable-and-mythos-5-1
- Wunderlust: https://wunderlust.xyz/r/claude-fable-5-1
- Image: https://wunderlust.xyz/media/claude-fable-5-1-poster.jpg
- Video preview: https://wunderlust.xyz/media/claude-fable-5-1.webm
- Added: 2026-11-05

## What it is

Anthropic model (September 2026) aimed at programming, knowledge work and long, autonomous tasks.

## What it’s for

To pick a model on the API or cloud platforms for code and multi-step tasks.

## Benefits

- Better than Fable 5 at code, computer use and reasoning
- Better at finding the root cause of software bugs
- Long, unsupervised work, with more concise updates
- Available on the API as claude-fable-5-1 and on the major clouds

## Caveats

- According to Anthropic, total cost drops about 25% on typical workloads
- Stated price: US$ 10 per million input tokens and US$ 50 per million output tokens
- Claude Mythos 5.1 is restricted to verified professionals

## Similar on Wunderlust

- [LM Studio](https://wunderlust.xyz/r/lm-studio.md): App for downloading and running AI models locally, with a Claude Code-compatible server
- [Ollama](https://wunderlust.xyz/r/ollama.md): Runtime for running language models on your own machine
- [Claude Code](https://wunderlust.xyz/r/claude-code.md): Anthropic's terminal coding agent, with official documentation
- [Claude Cowork](https://wunderlust.xyz/r/claude-cowork.md): Claude mode for tasks and documents with a work folder, skills, connectors and schedules
- [Pizza Bot](https://wunderlust.xyz/r/pizza-bot.md): Local inbox for long-running AI agents, with an approvals queue
- [Unsloth Studio](https://wunderlust.xyz/r/unsloth-studio.md): App for running, chatting with and training AI models locally