Minor impactResolvedAI/ML

Anthropic incident: Elevated errors on Claude Sonnet 5

Anthropic reported this minor-impact incident on its official status page on Aug 4, 2026, 11:27 UTC. It was resolved after 25 min.

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Aug 4, 2026, 11:27 UTC
started
Aug 4, 2026, 11:52 UTC
resolved
25 min
duration
Minor
impact

Affected components

  • Claude API (api.anthropic.com)
  • Claude Code
  • Claude Console (platform.claude.com)
  • claude.ai

Timeline

updates from Anthropic's status page ↗
  1. resolvedAug 4, 2026, 11:52 UTC

    This incident has been resolved.

  2. monitoringAug 4, 2026, 11:37 UTC

    A fix has been implemented and we are monitoring the results.

  3. investigatingAug 4, 2026, 11:27 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.

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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Anthropic incident on Aug 4, 2026: Elevated errors on Claude Sonnet 5 · APIStatus.watch