Unannounced 'claude-fable-5.5' spotted as GA in Azure's model catalog with 1M context
rickasaurus · x · 2026-10-14
An automated litellm price-sync commit shows "azureai/claude-fable-5.5" appearing in Azure's East US 2 model catalog with Generally Available status. The config lists 1M max input tokens, 128K max output tokens, vision and web search support (billed per query), and a deprecation date of 2027-12-05. Others note "Fable 5.5" and "Astra 6.1" look very close, possibly codenames for the same batch of new Claude models.
Anthropic has not announced anything; this is an unconfirmed pre-launch leak from third-party catalog scraping.
Related event: Unreleased Claude Fable 5.5 surfaces in Azure catalog(4 posts)→
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