
Anthropic: Claude Fable 5.2 and Mythos 5.2 are 30% faster
Original title: Introducing Claude Fable 5.2 and Claude Mythos 5.2
- What it is
- Anthropic released Claude Fable 5.2 and Claude Mythos 5.2, which are upgraded models designed for difficult technical tasks. They are up to 30% faster than the previous version, cost less, and have improved coding, reasoning, and vision capabilities.
- How it works
- Both models share the same underlying technology. Claude Fable 5.2 includes safety guardrails for cybersecurity and biology, while Claude Mythos 5.2 is tailored for approved organizations doing research in those fields.
- Where it is available
- Claude Fable 5.2 is available to all users. Claude Mythos 5.2 is accessible to organizations that apply through specific verification programs.
- Example
- A team used the model to migrate a critical software service from Python to Rust, which made the service start 26 times faster.


















































