GitHub Copilot experienced degraded performance due to issues with the gpt-5.3-codex model from an upstream provider, affecting Copilot Chat, VS Code, and other Copilot products. The incident lasted 28 minutes and was resolved by working with the upstream model provider. GitHub has indicated that a detailed root cause analysis will be shared once available.
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.
We are experiencing degraded availability for the gpt-5.3-codex model in Copilot Chat, VS Code and other Copilot products. This is due to an issue with an upstream model provider. We are working with them to resolve the issue.
We are investigating reports of degraded performance for Copilot
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