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Elevated rate of errors for OpenAI models provided by Copilot

ResolvedminorOfficial source confirmedSpecific component onlyFirst recorded update Sep 17, 2026, 08:59 PM · Resolved Sep 17, 2026, 09:49 PM

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...

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Affected services

Copilot AI Model Providers

Updates (3)

  1. Sep 17, 2026, 09:49 PM
    Elevated rate of errors for OpenAI models provided by Copilot

    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 provid

    GitHub ↗
  2. Sep 17, 2026, 09:39 PM
    Elevated rate of errors for OpenAI models provided by Copilot

    We are experiencing degraded availability for GPT-5.6 Luna, GPT-5.6 Terra, GPT-5.6 Sol, GPT-6 Astra, GPT-5.3-Codex in Copilot products and IDE surfaces. This is due to an issue with an upstream model provider. The provider is working to mitigate the problem and we are monitoring recovery. We recommend choosing another model or selecting 'Auto' to continue using Copilot.

    GitHub ↗
  3. Sep 17, 2026, 08:59 PM
    Elevated rate of errors for OpenAI models provided by Copilot

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

    GitHub ↗

What to do next

  • Verify your own services recovered cleanly. Some upstream outages leave queues or caches in a degraded state, run smoke tests before declaring green internally.
  • Save the post-mortem. Vendors usually publish a detailed RCA 1-3 days later. We'll add it to this page when it appears.
  • Watch the provider going forward. Follow GitHub's status feed →

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