Live / Incidents / GitHub Copilot
GitHub Copilot: Elevated errors on Fable 5 due to upstream provider
GitHub Copilot · github.comImpact: majorResolved2026-08-24 07:58 UTC
Public — what happened
Summary
On August 24th, 2026, between approximately 06:35 and 07:25 UTC, the Copilot service experienced a degradation of the Claude Fable 5 model due to an issue with our upstream provider. Users encountered elevated error rates when using Claude Fable 5, with requests sometimes failing mid-response. No other models were impacted.<br /><br />The issue was resolved by a mitigation put in place by our provider. GitHub is working with our provider to further improve the resiliency of the service to prevent similar incidents in the future.
Timeline
- Started — 2026-08-24 07:12 UTC
- Last update — 2026-08-24 07:58 UTC
- Resolved — 2026-08-24 07:58 UTC
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