GitHub Copilot outage: Elevated errors on Fable 5 due to upstream provider

Affected components

• Copilot AI Model Providers

1. resolvedAug 24, 2026, 07:58 UTC

   On August 24th, 2026, between approximately 06:35 and 07:25 UTC, the Copilot service experienced a degradation of the Claude Fable 5 model due to an issue with our upstream provider. Users encountered elevated error rates when using Claude Fable 5, with requests sometimes failing mid-response. No other models were impacted.<br /><br />The issue was resolved by a mitigation put in place by our provider. GitHub is working with our provider to further improve the resiliency of the service to prevent similar incidents in the future.

2. investigatingAug 24, 2026, 07:12 UTC

   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.

3. investigatingAug 24, 2026, 07:12 UTC

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

What APIStatus.watch saw

Our 5-minute checks didn't record a change in GitHub Copilot's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.

Other services with incidents at the same time

Overlapping incidents aren't necessarily related.

• Anthropic: Elevated errors for multiple modelsMajor · Aug 24, 2026, 05:06 UTC
• Supabase: 401 errors due to JWT rejectionsMinor · Aug 14, 2026, 02:23 UTC
• Telnyx: Programmable Wireless data loss in AustraliaMinor · Aug 17, 2026, 19:27 UTC
• Akamai: Reporting data availability issues in 'Traffic by Hostname' reportMinor · Aug 20, 2026, 16:43 UTC
• Akamai: Edge Delivery Issues in IndiaMinor · Aug 22, 2026, 11:21 UTC
• Plaid: Elevated API errorsMinor · Aug 24, 2026, 05:36 UTC
• Cursor: Elevated errors for Claude Opus 5Minor · Aug 24, 2026, 05:38 UTC
• Supabase: Error spikes in one of the ap-northeast-2 Supavisor clustersMinor · Aug 24, 2026, 06:02 UTC

How often does GitHub Copilot have incidents?

GitHub Copilot reported 15 incidents in the last 90 days, 5 of them major or critical. A typical incident lasted 1h 14m. See GitHub Copilot's uptime and incident history