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Degradation with Gemini 3.8 Flash

ResolvedmajorOfficial source confirmedSpecific component onlyFirst recorded update Sep 16, 2026, 07:20 AM · Resolved Sep 16, 2026, 05:48 PM

On September 16, 2026, between 04:40 and 11:45 UTC, the Gemini 3.8 Flash model in GitHub Copilot experienced degraded availability. Requests to this model failed at an average rate of 6.4%, and the impact was highest during peak traffic hours. Other Copilot models were not affected. Users could continue to work with a different model or with 'Auto'.<br /><br />The degradation was caused due to a capacity issue with an upstream model provider. Failure rates returned to normal as the daily traffic peak passed. We monitored the model until it was healthy and resolved the incident at 17:48...

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Affected services

Copilot AI Model Providers

Updates (5)

  1. Sep 16, 2026, 05:48 PM
    Degradation with Gemini 3.8 Flash

    On September 16, 2026, between 04:40 and 11:45 UTC, the Gemini 3.8 Flash model in GitHub Copilot experienced degraded availability. Requests to this model failed at an average rate of 6.4%, and the impact was highest during peak traffic hours. Other Copilot models were not affected. Users could continue to work with a different model or with 'Auto'.<br /><br />The degradation was caused due to a capacity issue with an upstream model provider. Failure rates returned to normal as the daily traffic peak passed. We monitored the model until it was healthy and resolved the incident at 17:48 UTC. We

    GitHub ↗
  2. Sep 16, 2026, 11:45 AM
    Degradation with Gemini 3.8 Flash

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

    GitHub ↗
  3. Sep 16, 2026, 10:58 AM
    Degradation with Gemini 3.8 Flash

    Copilot AI Model Providers is experiencing degraded performance. We are continuing to investigate.

    GitHub ↗
  4. Sep 16, 2026, 08:28 AM
    Degradation with Gemini 3.8 Flash

    Copilot AI Model Providers is experiencing degraded performance. We are continuing to investigate.

    GitHub ↗
  5. Sep 16, 2026, 07:21 AM
    Degradation with Gemini 3.8 Flash

    We are investigating reports of degraded availability 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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