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GitHub Copilot experiencing degraded availability in Fable 5 model

GitHub is investigating elevated errors affecting its Copilot AI assistant, attributed to an upstream model provider issue.

By The Downtime · Aug 24, 2026 · 7:15 AM ·Updated 4 weeks ago

GitHub is investigating degraded availability for the Fable model in Copilot products and integrated development environment surfaces. The company has classified the incident as major and is currently working with the upstream model provider to resolve the issue.

GitHub, owned by Microsoft, provides version control and collaboration tools used by millions of developers worldwide. Copilot is GitHub's AI-powered code assistant that helps developers write code.

According to the official timeline, GitHub began investigating reports of degraded availability for Copilot AI Model Providers. The company subsequently confirmed degraded availability specifically for the Fable model and attributed the issue to a problem with the upstream model provider. GitHub is recommending users select an alternative model or use the 'Auto' option to continue working with Copilot while the issue is being resolved.

This is a developing story and we will continue to update as more information becomes available.

🕒 Live updates (3)

resolved Aug 24, 7:58 AM

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.

investigating Aug 24, 7:12 AM

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

investigating Aug 24, 7:12 AM

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

📎 Sources

Outage details are aggregated from official provider status pages. The Downtime reports them as a public service and is not affiliated with the providers named.

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