Anthropic reports degraded performance across multiple models

ns123abc · x · 2026-08-19

Anthropic's status page reports elevated errors affecting multiple models (Mythos 5, Fable 5, Opus 5, Sonnet 5, Haiku 4.5). The incident impacts claude.ai, the API, Claude Code, and Cowork.

Related event: Anthropic Suffers Broad Performance Degradation Across Claude Models(5 posts)→

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