GitHub reported this minor-impact incident on its official status page on Aug 3, 2026, 09:53 UTC. It was resolved after 1h 32m.
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On 2026-08-03, between 06:52 and 11:25 UTC, some GitHub Copilot users experienced errors when using chat and agent features. Requests to list the available models failed, and because every chat or agent interaction begins by retrieving the list of models, affected users saw their requests fail. On average about 3% of these model-listing requests failed during the incident (roughly 97% succeeded), but failures were significantly higher during peak-traffic periods, at times approaching 100% for the affected internal lookups. Approximately 4,066 users were affected in a single 60-minute window, concentrated among IDE-based clients. The underlying AI models themselves remained healthy throughout.<br /><br />The incident was caused by an increase in how often clients requested the model list, which pushed an internal user-authorization lookup past a rate limit; the rate-limited responses were surfaced to users as errors. We mitigated the impact by increasing how long Copilot caches that aut
The degradation affecting Copilot has been mitigated. We are monitoring to ensure stability.
We are still seeing intermittent errors with Copilot, and are continuing to investigate and consider mitigations.
We are experiencing degraded availability for chat & agent models in Copilot. Multiple models are impacted and customers may experience requests failing. We are investigating and will provide an update as soon as possible.
We are investigating reports of degraded performance for Copilot
Our 5-minute checks didn't record a change in GitHub's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.
Overlapping incidents aren't necessarily related.
GitHub reported 49 incidents in the last 90 days, 15 of them major or critical. A typical incident lasted 1h 16m. See GitHub's uptime and incident history