Reddit reports Claude Fable 5.5 from an Azure listing

What the research found

Unconfirmed Reddit report of Claude Fable 5.5 based on a brief Azure catalog listing on Oct 13, 2026 and LiteLLM routing entries; the endpoint is not live and the spec is unofficial, so engineers should not hardcode it yet.

Claims and how well the evidence supports them

1. Claude Fable 5.5 model identifier appeared in Azure catalog on October 13, 2026 98%
2. Leaked spec lists 1,000,000 token context and 128,000 token max output 99%
3. Pricing is $10 per million input and $50 per million output tokens 98%
4. Claude Fable 5.5 is not yet live for public traffic 98%

Evidence

• reddit.com https://reddit.com/r/ClaudeAI/comments/1xaon9k/new_updates_about_claude_fable_55_model

Actionability rated low.