Recorded 14 Oct 2026 at 10:16 UTC. This is what ChangeIntel recorded, including the title, summary, facts and links. It is not a statement of the source's current position. See the latest record.
Disruption with some GitHub services
On September 15, 2026, between 05:45 and 09:50 UTC, the Claude Fable 5.1 model in GitHub Copilot experienced intermittently degraded availability, with an average error rate of 2.8%. During brief recurring 15 minute periods that recurred every ~45 minutes, availability for Claude Fable 5.1 dropped to a maximum of ~40% before recovering completely. Other Copilot models were not affected. Users could continue to work with a different model or with 'Auto'.The cause was an issue with an upstream model provider that intermittently rejected requests while overloaded. GitHub worked with the provider, who acknowledged and then resolved the underlying issue at 9:50 UTC, after which the model returned to constant normal availability. Once recovery was guaranteed, we resolved the incident at 11:17 UTC.To reduce the chance of recurrence and customer impact, GitHub is reviewing per-model availability alerting and automatic in-product fallback so that requests to a degraded model can shift to a healthy alternative more quickly.
What it said
- Observed state
- Ended
- Stage
- Resolved
- Posted
- 15 Sep 2026 09:47 UTC
Recorded links
What changed
First observed 14 Oct 2026No field changes in the recorded history.
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