Anthropic prepares to release Claude Fable 5.5 next week

Anthropic will likely serve more than one model soon, and Claude Fable 5.5 may be first in line. Recent leaks point the same way: partners appear to be testing Fable 5.5, while new Claude codenames keep turning up in third-party tools. One recent sign that Fable 5.5 may be nearing release came from X user Alex Getman, who shared a screenshot showing Fable 5.5 in Azure's East US 2 model catalog with the status set to "Generally available." The screenshot showed a LiteLLM entry for the model with the same pricing as Fable 5.1, $10 per million input tokens and $50 per million output tokens, along with a 1 million token context window and up to 128K tokens of output.

Also reported by TestingCatalog AI News.

First reported by TestingCatalog. This page is a short excerpt; the full text is theirs.