Minor impactResolvedDevOps

GitHub incident: Claude Fable 5 experiencing degraded performance

GitHub reported this minor-impact incident on its official status page on Jul 16, 2026, 21:05 UTC. It was resolved after 59 min.

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Jul 16, 2026, 21:05 UTC
started
Jul 16, 2026, 22:04 UTC
resolved
59 min
duration
Minor
impact

Timeline

updates from GitHub's status page ↗
  1. resolvedJul 16, 2026, 22:04 UTC

    On July 16, 2026, GitHub Copilot users experienced elevated errors when using Claude Fable 5 from 17:33 UTC until mitigation at 22:04 UTC. The average error rate was 1.4%, with a maximum error rate of 30.85%. The issue was caused by degradation at an upstream model provider; other Copilot models were not significantly affected, and users could avoid the impact by selecting another model or Auto. Service recovered after the provider mitigated the degradation.

What APIStatus.watch saw

Our 5-minute checks didn't record a change in GitHub'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

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How often does GitHub have incidents?

GitHub reported 66 incidents in the last 90 days, 26 of them major or critical. A typical incident lasted 1h 21m. See GitHub's uptime and incident history

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GitHub incident on Jul 16, 2026: Claude Fable 5 experiencing degraded performance · APIStatus.watch