Updated 6:32 a.m. Eastern on September 15, 2026
GitHub says it is investigating a disruption with some GitHub services, with minor impact reported. The most recent official update states the team continues to investigate intermittent errors affecting Claude Fable 5.1 in some Copilot products and integrated development environments.
What is affected
The affected component is Copilot AI Model Providers, with degraded performance and intermittent errors affecting Claude Fable 5.1 in some Copilot products and integrated development environments.
What users can do
Customers can use another model or select Auto while GitHub monitors the situation.
Official update timeline
We are investigating reports of impacted performance for some GitHub services.
We are investigating degraded availability for Claude Fable 5.1, affecting some Copilot products and integrated development environments. The issue is caused by a problem with our upstream model provider. Customers can use another model or select Auto while we investigate.
Copilot AI Model Providers is experiencing degraded performance. We are continuing to investigate.
We continue to investigate intermittent errors affecting Claude Fable 5.1 in some Copilot products and integrated development environments. Customers can use another model or select Auto while we monitor the situation.
