GitHub Copilot outage on September 17, 2026: Elevated rate of errors for OpenAI models provided by Copilot
GitHub reported an incident affecting GitHub Copilot for 50 minutes on 17 September 2026, from 20:59 to 21:49 UTC.
Resolved
Official incident reported by GitHub
- Started
- 20:59
- 17 Sep 2026 UTC
- Resolved
- 21:49
- 17 Sep 2026 UTC
- Duration
- 50m
- 50 minutes
- Impact
- Minor
- as rated by GitHub
- Updates
- 3
- posted by GitHub
Timeline
All times UTC.
Official incident from GitHub
Elevated rate of errors for OpenAI models provided by Copilot
-
Official
Investigating
We are investigating reports of degraded performance for Copilot AI Model Providers
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Official
Monitoring
We are experiencing degraded availability for GPT-5.6 Luna, GPT-5.6 Terra, GPT-5.6 Sol, GPT-6 Astra, GPT-5.3-Codex in Copilot products and IDE surfaces. This is due to an issue with an upstream model provider. The provider is working to mitigate the problem and we are monitoring recovery. We recommend choosing another model or selecting 'Auto' to continue using Copilot.
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Official
Resolved
Between 20:26 and 21:17 UTC on September 17, 2026, GitHub Copilot experienced degradation affecting several GPT models, including GPT-5.6 Luna, GPT-5.6 Terra, GPT-5.6 Sol, GPT-5.3-Codex, and GPT-6 Astra. Users encountered elevated error rates when using these models. The degradation was caused by an issue with an upstream model provider. GitHub engineers detected the issue through automated monitoring and coordinated with the provider. Our automated model-warning system activated in-product warnings for affected models during the incident. Service returned to normal after the provider implemented a mitigation.
"Official" rows are quoted from GitHub's public status page, www.githubstatus.com. Very long posts are shortened.
What our checkpoints saw
HostTracker's checkpoints, which test api.githubcopilot.com from several locations, recorded no outage of 5 minutes or longer during this incident. A provider can report a problem that affects only some features, regions or accounts, which a check of the main address does not see. The live GitHub Copilot status shows what our checks see right now.
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You get the same record you are reading here for your own services: every outage timestamped, with the checks that observed it.
Independent measurement by HostTracker. Not affiliated with GitHub Copilot. Official updates are quoted from GitHub's public status page and remain GitHub's own words.