minorresolved

Anthropic (Claude) outage on 2026-07-31: Degraded performance on Claude Sonnet 5

Started: July 31, 2026 at 06:18 AM UTC
Resolved: July 31, 2026 at 07:04 AM UTC
Duration: 47m

Latest update from Anthropic (Claude)

July 31, 2026 at 07:04 AM UTC

This incident 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
Resolved in 15m
minorAugust 3, 2026 at 12:52 PM UTC
Error rates across multiple models
Resolved in 1h 24m
minorJuly 30, 2026 at 01:43 PM UTC
Degraded performance on Claude Opus 4.8
Resolved in 41m
majorJuly 30, 2026 at 05:57 AM UTC
Elevated errors across many models
Resolved in 4h 51m
criticalJuly 29, 2026 at 07:49 PM UTC
Elevated errors across all models
Resolved in 2h 47m

See the full Anthropic (Claude) outage history

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