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Resolved GitHub · degraded service

Elevated errors on Fable 5 due to upstream provider

Posted 24 Aug 07:12 UTC, last seen 5 Oct 19:09 UTC.

GitHub status pageOn the status board
Unknown Duration: the provider stated no start
3Updates posted
1Other incident at the same time

What it affected

As the provider names it

GitHub

What the provider posted

Newest first
  1. 24 Aug 07:58 UTCResolvedOn 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.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.
  2. 24 Aug 07:12 UTCUpdateWe are experiencing degraded availability for the Fable model in Copilot products and IDE surfaces. This is due to an issue with the upstream model provider. While we work with them to resolve the issue, we recommend choosing another model or selecting 'Auto' to continue using Copilot.
  3. 24 Aug 07:12 UTCInvestigatingWe are investigating reports of degraded availability for Copilot AI Model Providers

Around it

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Elsewhere at the same time

Earlier incidents in the 14 days before

What changed

First observed 14 Oct 2026

No field changes in the recorded history.

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Sources read 14 Oct 11:21 UTC · 251 of 253 readable · 250 fully read · documentation 0/409 current

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