Leak: Claude Fable 5.5 spotted in Azure catalog, launch expected this week

iamaliveix · x · 2026-10-15

An unverified leak claims Claude Fable 5.5 may launch this week: the model appeared yesterday in Azure's East US 2 model catalog with Generally Available status. The post adds that Opus 5.5 brought major capability gains over Opus 5, suggesting a big 5.1→5.5 jump, and that OpenAI is also preparing GPT-6.1 Astra for the coming weeks.

Related event: Unreleased Claude Fable 5.5 Surfaces in Azure Catalog(8 posts)→

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