Anthropic investigating elevated errors on Claude Mythos 5.1 and Fable 5.1

ClaudeAI-mod-bot · reddit · 2026-10-05

Anthropic's status page reported elevated errors on requests to Claude Mythos 5.1 and Claude Fable 5.1 starting Oct 5, 13:05 UTC. The company is investigating, with no root cause or ETA yet. A bot-synced Reddit thread on r/ClaudeAI tracks updates and will be removed an hour after resolution.

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