Degradation with Gemini 3.8 Flash
On September 16, 2026, between 04:40 and 11:45 UTC, the Gemini 3.8 Flash model in GitHub Copilot experienced degraded availability. Requests to this model failed at an average rate of 6.4%, and the impact was highest during peak traffic hours. Other Copilot models were not affected. Users could continue to work with a different model or with 'Auto'. The degradation was caused due to a capacity issue with an upstream model provider. Failure rates returned to normal as the daily traffic peak passed. We monitored the model until it was healthy and resolved the incident at 17:48 UTC. We are working to make our systems resilient to cover peak demand for all the Copilot models.
The latest update from GitHub.
State
Resolved
Started
46 d ago
2026-09-16 07:20 UTC
Lasted
10 h 28 min
until 2026-09-16 17:48 UTC
Worst impact
Partial outage
Timeline
5 updatesInvestigating
4 h 25 min 42%
Monitoring
6 h 3 min 58%
Updates
Times in UTCAs posted by GitHub
On September 16, 2026, between 04:40 and 11:45 UTC, the Gemini 3.8 Flash model in GitHub Copilot experienced degraded availability. Requests to this model failed at an average rate of 6.4%, and the impact was highest during peak traffic hours. Other Copilot models were not affected. Users could continue to work with a different model or with 'Auto'. The degradation was caused due to a capacity issue with an upstream model provider. Failure rates returned to normal as the daily traffic peak passed. We monitored the model until it was healthy and resolved the incident at 17:48 UTC. We are working to make our systems resilient to cover peak demand for all the Copilot models.
The degradation affecting Copilot AI Model Providers has been mitigated. We are monitoring to ensure stability.
Copilot AI Model Providers is experiencing degraded performance. We are continuing to investigate.
Copilot AI Model Providers is experiencing degraded performance. We are continuing to investigate.
We are investigating reports of degraded availability for Copilot AI Model Providers
Affected components
1GitHub in the last 90 days
Full historyIncidents in 90 days
46
Days with an incident
34
Median duration
1 h 29 min
This incident
7.0× the median
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