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GitHub: Elevated rate of errors for OpenAI models provided by Copilot

MinorStatus: resolvedStarted Resolved (50 min)3 updatesstspg.io (opens in new tab)

Affected components: Copilot AI Model Providers

Timeline of updates

  1. investigating

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

  2. monitoring

    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.

  3. resolved

    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.

    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.

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Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab).

Cite this

Status incident (vendor impact label: minor) posted by GitHub, started 2026-09-17 20:59 UTC, resolved after 50 min, 3 update(s).

Title
Elevated rate of errors for OpenAI models provided by Copilot
Vendor
GitHub
Date
URL
https://rewindex.com/company/github/incidents/nvy2q96mcmyg

GitHub profileRecent GitHub incidentsAll outages on September 17, 2026GitHub in September 2026MarkdownJSON