GitHub incident: Elevated errors on GPT-5.4 Nano

Affected components

• Copilot AI Model Providers

1. resolvedNov 2, 2026, 18:24 UTC

   This incident has been resolved. Thank you for your patience and understanding as we addressed this issue. A detailed root cause analysis will be shared as soon as it is available.

2. monitoringNov 2, 2026, 18:10 UTC

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

3. investigatingNov 2, 2026, 17:58 UTC

   We are experiencing degraded availability for the GPT-5.4 Nano model in Copilot products and IDE surfaces. This is due to an issue with an upstream model provider.

4. investigatingNov 2, 2026, 17:46 UTC

   We are investigating reports of elevated errors on GPT-5.4 Nano

5. investigatingNov 2, 2026, 17:46 UTC

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

What APIStatus.watch saw

• Nov 2, 2026, 17:49 UTCoperational → degraded
• Nov 2, 2026, 18:14 UTCdegraded → operational

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GitHub reported 67 incidents in the last 90 days, 24 of them major or critical. A typical incident lasted 1h 15m. See GitHub's uptime and incident history