Incident with Copilot AI Model Providers

Lesson: Engineering teams should monitor provider health when using third party AI model services.

What happened

On August 27th, 2026, between approximately 09:20 and 12:14 UTC, the Copilot service experienced a degradation of the Kimi K3 model due to an issue with our upstream provider. Users encountered elevated error rates when using Kimi K3. 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.

1. Resolved · Aug 27, 12:12 UTC
   On August 27th, 2026, between approximately 09:20 and 12:14 UTC, the Copilot service experienced a degradation of the Kimi K3 model due to an issue with our upstream provider. Users encountered elevated error rates when using Kimi K3. 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. Investigating · Aug 27, 12:12 UTC
   The issues with our upstream model provider have been mitigated, and Kimi K3 is once again available in Copilot products and IDE surfaces. We will continue monitoring to ensure stability.
3. Investigating · Aug 27, 11:58 UTC
   Copilot AI Model Providers is experiencing degraded performance. We are continuing to investigate.
4. Investigating · Aug 27, 10:43 UTC
   We are experiencing degraded availability for the Kimi K3 model in Copilot products and IDE surfaces. This is due to an issue with an upstream model provider. While we work with them to resolve the issue, we recommend choosing another model or selecting 'Auto' to continue using Copilot.
5. Investigating · Aug 27, 10:04 UTC
   We are investigating reports of degraded availability for Copilot AI Model Providers