GitHub outage, 31 August 2026
Elevated rate of errors for OpenAI models provided by Copilot
- Started
- Resolved
- 31 Aug 2026, 09:58 UTC (after 42 min)
- Impact
- Minor
- Affected
- Copilot AI Model Providers
Last update from GitHub
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.
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