criticalresolved

Anthropic (Claude) outage on 2026-07-21: Elevated errors on several models

Started: July 21, 2026 at 03:35 PM UTC
Resolved: July 21, 2026 at 06:18 PM UTC
Duration: 2h 44m

Latest update from Anthropic (Claude)

July 21, 2026 at 06:18 PM UTC

From 8:28am PT / 15:28 UTC through 9:26am PT / 16:26 UTC users experienced elevated errors on requests to multiple Claude models. This issue has been resolved.

Anthropic (Claude)'s own report for this incident

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Other Anthropic (Claude) incidents

minorAugust 3, 2026 at 03:13 PM UTC
Degraded performance on Claude Sonnet 5
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minorAugust 3, 2026 at 12:52 PM UTC
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minorJuly 31, 2026 at 06:18 AM UTC
Degraded performance on Claude Sonnet 5
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minorJuly 30, 2026 at 01:43 PM UTC
Degraded performance on Claude Opus 4.8
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majorJuly 30, 2026 at 05:57 AM UTC
Elevated errors across many models
Resolved in 4h 51m

See the full Anthropic (Claude) outage history

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