Major impactResolvedAI/ML

Anthropic outage: Elevated errors for Claude Fable 5, Claude Sonnet 5, Claude Haiku 4.5, and other models

Anthropic reported this major-impact incident on its official status page on Jul 25, 2026, 21:34 UTC. It was resolved after 34 min.

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Jul 25, 2026, 21:34 UTC
started
Jul 25, 2026, 22:08 UTC
resolved
34 min
duration
Major
impact

Affected components

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

Timeline

updates from Anthropic's status page ↗
  1. resolvedJul 25, 2026, 22:08 UTC

    This incident has been resolved.

  2. investigatingJul 25, 2026, 21:34 UTC

    We are investigating elevated errors on requests to Claude Fable 5, Claude Sonnet 5, Claude Haiku 4.5, and other Claude models. We will provide an update as soon as possible.

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.

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

← Previous: Elevated errors for Mythos 5, Fable 5, Opus 5 and Claude Haiku 4.5 (Jul 25, 2026)Next: Elevated errors for Opus 5 (Jul 26, 2026) →
Anthropic outage on Jul 25, 2026: Elevated errors for Claude Fable 5, Claude Sonnet 5, Claude Haiku 4.5, and other models · APIStatus.watch