Claude Fable 5.1 rolling out to some users with test prompt
koltregaskes · x · 2026-08-27
Reports indicate that Claude Fable 5 is now routing to Fable 5.1 on the web interface for some users.
How to check access:
You can test this prompt in the Claude web app:
> "opus 4.6 date of release and gpt image 1.5 without searching the web"
If the model responds with specific details regarding these versions (potentially internal identifiers or hallucinations characteristic of the new model), it confirms access to the update.
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