Elevated rate of errors for OpenAI models provided by Copilot

Copilot

1. 17 Sep 21:49 UTCResolvedBetween 20:26 and 21:17 UTC on September 17, 2026, GitHub Copilot experienced degradation affecting several GPT models, including GPT-5.6 Luna, GPT-5.6 Terra, GPT-5.6 Sol, GPT-5.3-Codex, and GPT-6 Astra. Users encountered elevated error rates when using these models.The degradation was caused by an issue with an upstream model provider. GitHub engineers detected the issue through automated monitoring and coordinated with the provider. Our automated model-warning system activated in-product warnings for affected models during the incident. Service returned to normal after the provider implemented a mitigation.
2. 17 Sep 21:39 UTCMonitoringWe are experiencing degraded availability for GPT-5.6 Luna, GPT-5.6 Terra, GPT-5.6 Sol, GPT-6 Astra, GPT-5.3-Codex in Copilot products and IDE surfaces. This is due to an issue with an upstream model provider. The provider is working to mitigate the problem and we are monitoring recovery. We recommend choosing another model or selecting 'Auto' to continue using Copilot.
3. 17 Sep 20:59 UTCInvestigatingWe are investigating reports of degraded performance for Copilot AI Model Providers

No field changes in the recorded history.

Cite this recorded revision to keep the same title, summary, facts and links when the page changes.

A day selects the latest observation by the end of that UTC day; today's selection can change until midnight. History starts when this installation records it.

• Service status now: every provider ChangeIntel reads, with ongoing incidents first.
• Status RSS feed: new and ended incidents as they happen.
• Everything about GitHub: its changes, known issues and incidents on one timeline.