Minor impactResolvedAI/ML

Anthropic incident: Degraded performance on Claude Sonnet 5

Anthropic reported this minor-impact incident on its official status page on Jul 31, 2026, 06:18 UTC. It was resolved after 47 min.

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Jul 31, 2026, 06:18 UTC

started

Jul 31, 2026, 07:04 UTC

resolved

47 min

duration

Minor

impact

Affected components

Claude API (api.anthropic.com)
Claude Code
Claude Cowork
claude.ai

Timeline

updates from Anthropic's status page ↗

resolvedJul 31, 2026, 07:04 UTC
This incident has been resolved.
investigatingJul 31, 2026, 06:18 UTC
We are currently investigating this issue.

What APIStatus.watch saw

Our 5-minute checks didn't record a change in Anthropic's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.

Other services with incidents at the same time

Overlapping incidents aren't necessarily related.

Supabase: Issues with Edge Function DeploymentMajor · Jul 30, 2026, 17:37 UTC
RevenueCat: Newly created apps error with "The key is not valid or is not compatible with the Bundle ID of your app"Minor · Jul 27, 2026, 10:14 UTC

How often does Anthropic have incidents?

Anthropic reported 47 incidents in the last 90 days, 21 of them major or critical. A typical incident lasted 1h 4m. See Anthropic's uptime and incident history

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