Elevated rate of errors for OpenAI models provided by Copilot

resolved

Between 08:37 and 09:41 UTC on August 31, 2026, GitHub Copilot experienced degradation affecting several GPT models, including gpt-5.2, gpt-5.3-codex, gpt-5.4, gpt-5.4-mini, gpt-5.4-nano, and the gpt-5.6 family (Luna, Sol, and Terra). Users encountered elevated error rates and interrupted streaming responses. Other models were not affected.<br /><br />The degradation was caused by an issue with an upstream model provider. GitHub engineers detected the issue through automated monitoring, displayed in-product warnings for the affected models, and coordinated with the provider. Service returned to normal after the provider implemented a mitigation.

8/31/2026, 9:58:14 AM

monitoring

The issues with our upstream model provider have been resolved, and gpt-5.3-codex, gpt-5.4-mini, gpt-5.4-nano, gpt-5.5, and the gpt-5.6 family of models are once again available in Copilot products and IDE surfaces.<br /><br />We will continue monitoring to ensure stability, but mitigation is complete.

8/31/2026, 9:58:02 AM

monitoring

The degradation affecting Copilot AI Model Providers has been mitigated. We are monitoring to ensure stability.

8/31/2026, 9:51:13 AM

investigating

One of our model providers has confirmed an incident on their end. We have provided them details to help identify the issue. We are starting to see recovery.

8/31/2026, 9:48:12 AM

investigating

Copilot is experiencing a higher rate of errors for OpenAI models, including gpt-5.2, gpt-5.3-codex, gpt-5.4, gpt-5.4, and the gpt-5.6 family of models. Other models are not impacted. <br />

8/31/2026, 9:22:18 AM

investigating

We are investigating reports of degraded performance for Copilot AI Model Providers

8/31/2026, 9:15:48 AM