GitHub outage, 17 September 2026
Elevated rate of errors for OpenAI models provided by Copilot
- Started
- Resolved
- 17 Sept 2026, 21:49 UTC (after 50 min)
- Impact
- Minor
- Affected
- Copilot AI Model Providers
Last update from GitHub
Between 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.<br /><br />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.
Is GitHub down now?
This page is the record of one past incident. For the live status, see Is GitHub down right now? - it reads the official status page every 2 minutes.