[Anthropic tests Fable 5.2 and Opus 5.5 ahead of the release](https://www.testingcatalog.com/anthropic-tests-fable-5-2-and-opus-5-5-ahead-of-the-release/)

Anthropic appears to be quietly A/B testing Claude Fable 5.2, with users reporting stronger one-shot JavaScript outputs and richer canvas demos. Early comparisons suggest a clear step up from 5.1, as Opus 5.5 rumors also build.

 [#anthropic](?q=%23anthropic) [@testingcatalog](https://t.me/testingcatalog)