Anthropic’s Fable 5.5 and Next-Generation Opus Models Surface in Early Tests

What happened

Two unreleased Claude models, Fable 5.5 and a next-generation Opus, have reportedly appeared in early tests, according to QbitAI. A `claude-fable-5-5` entry briefly appeared in Azure’s model catalog, while developers spotted a model code-named Obsidian 3 on a benchmark platform, scoring slightly above Opus 5.5. The article says some sources expect the models as soon as one or two weeks, but Anthropic has not confirmed a release date.

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