Claude Fable 5 experiencing degraded performance

Incident Report for GitHub

Resolved

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.

Posted Jul 16, 2026 - 22:04 UTC

Update

We are experiencing degraded availability for the Claude Fable 5 model in Copilot products and IDE surfaces. This is due to an issue with an upstream model provider. While we work with them to resolve the issue, we recommend choosing another model or selecting 'Auto' to continue using Copilot.

Posted Jul 16, 2026 - 21:06 UTC

Investigating

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

Posted Jul 16, 2026 - 21:05 UTC

This incident affected: Copilot AI Model Providers.