Claude Fable 5.2 is now available in FastMetal chat
Claude Fable 5.2 is live in FastMetal chat. Anthropic released it on November 9, 2026, as its most capable model for hard technical work, and it succeeds Claude Fable 5.1, which we also serve.
What Anthropic says changed
- Speed. Output is generated up to 30% faster than Fable 5.1, and early testers found its explanations clearer.
- Coding. On FrontierSWE v2 it scores 69.9%, up from 56.3% for Fable 5.1.
- Vision. On Chartography, a chart-reading benchmark, it scores 73.4%, up from 44.8%.
These are Anthropic's own figures. Anthropic also released Claude Mythos 5.2 the same day; it goes only to organizations Anthropic vets, and FastMetal does not offer it.
What we checked before turning it on
- Image input works: it named the colors in a test image correctly.
- It always reasons before answering, and those reasoning tokens bill as output tokens.
- The context window is 1,000,000 tokens, so long documents and codebases fit in one conversation.
Pricing
Fable 5.2 bills per million input and output tokens, at a lower rate than Fable 5.1. Current rates are on the Claude Fable 5.2 model page, and billing is explained on /pricing. Usage is prepaid, so you can't be charged past your balance.
How to use it
- Create a FastMetal account.
- Add credit.
- Open chat, pick Claude Fable 5.2 from the model list, and ask. You can attach images and PDFs to a message. Claude Fable 5.2 is also available on the API and over MCP.
Compare real answers first
The model page shows Fable 5.2's actual answers to FastMetal's 43 shared prompts (summarization, bug fixes, translation and more), next to Fable 5.1 and every other model we serve. The full catalog is at /models.