Two incidents on July 21: 'Elevated errors on several models' progressed to monitoring, and 'Elevated errors on Haiku 4.5' was resolved. No new incidents or breaking changes.

Elevated errors on multiple Claude models (Haiku 4.5, Sonnet 5)

Jul 21, 2026• Major Update

Anthropic reported elevated errors on several models including Haiku 4.5 and Sonnet 5. The Haiku 4.5 incident progressed from investigating to monitoring, while the Sonnet 5 incident was resolved. A new incident for elevated errors on several models was also identified and is being fixed.

Haiku 4.5 elevated errors incident resolved

Jul 21, 2026• Major Update

An incident of elevated errors on Haiku 4.5 was investigated, identified, and fixed. The status page was updated to reflect the fix and ongoing monitoring. No further action is needed.

Elevated errors across Fable 5 resolved

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Jul 21, 2026• Major Update

An incident causing elevated errors on Fable 5 was identified, fixed, and resolved on July 21. The status page was updated from 'Identified' to 'Resolved' with monitoring in between.

Haiku 4.5 elevated errors incident resolved

Jul 21, 2026• Major Update

An incident causing elevated errors on Haiku 4.5 was identified, updated, and resolved on July 21. The issue lasted from 07:11 to 08:53 UTC. No further action needed.

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