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All agents  /  Claude API  /  History  /  Aug 12, 2026

Claude API outage on Aug 12, 2026: degraded performance for multiple models

Resolved after 4 h 17 min.

13:50 UTC to 18:07 UTC your time. Anthropic: “Degraded performance for multiple models.” 0 reports here during the incident.

Claude APIUpRight now Claude API is up. See live status

Reports during the incident

Every 15 minutes, 12:45 UTC to 19:15 UTC. Grey: normal. Red line: official incident.
12:45 UTC13:50 UTC18:07 UTC19:15 UTC

What people reported

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Anthropic's updates

Quoted from status.claude.com

  1. 13:50 UTC

    Investigating

    We are investigating elevated errors on requests to multiple models. We will provide an update as soon as possible.

  2. 16:10 UTC

    Identified

    We have identified an issue which resulted in errors across multiple models. At this time, errors are primarily impacting Claude Fable 5 and we are working to fully resolve these issues.

  3. 17:28 UTC

    Identified

    We are continuing to work to resolve an issue resulting in slightly elevated errors on requests to Claude Fable 5. We will provide an update as soon as possible.

  4. 18:07 UTC

    Resolved

    This issue has been resolved.

Other Claude API incidents

Nov 826 minDegraded performance for Claude Fable 5.1Details
Oct 2741 minElevated errors for Claude Sonnet 5.5Details
Oct 2742 minElevated errors for Claude Sonnet 5.5Details
All Claude API incidents

Other agents

Claude CodeUpCodexUpCursor IDEUpGitHub CopilotUpGemini CLIUpOpenAI APIUpGitHubUp

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