GitHub Copilot: Disruption with Gemini 2.5 Pro and Gemini 2.0 Flash in Copilot

MinorStatus: resolvedStarted 2025-09-29 18:39 UTCResolved 2025-09-29 19:12 UTC (33 min)1 updatewww.githubstatus.com

Part of an outage event

Gemini outage, Sep 29, 2025 · 4 vendors, 4 incidents

GitHub Copilot’s incident blames Gemini as the cause. (hop 1, posted +8 min vs the first vendor naming Gemini)

“…Disruption with Gemini 2.5 Pro and Gemini 2.0 Flash in Copilot On September 29, 2025, between 17:53 and 18:42 UTC, the Copilot service experienced a degradation of the Gemini 2.5 model due to an issue…”

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GitHub Copilot is outlined in red. Groups show up to a few vendors each; the event page lists every incident.

Mermaid source

flowchart LR
  root["Gemini<br/>own incident not archived"]:::inferred
  h1["Within an hour<br/>4 vendors, 3 blamed Gemini<br/>Sentry, GitHub, GitHub Copilot, Optimizely"]:::blames
  root --> h1
  me["GitHub Copilot (this incident)<br/>posted +8 min"]:::me
  h1 --- me

Full event: timeline, evidence and all vendors →

Detected automatically from incidents that started together and named the same provider. A link means one vendor’s incident named another, not a confirmed cause.

Timeline of updates

resolved2025-09-29 19:12 UTC
On September 29, 2025, between 17:53 and 18:42 UTC, the Copilot service experienced a degradation of the Gemini 2.5 model due to an issue with our upstream provider. Approximately 24% of requests failed, affecting 56% of users during this period. No other models were impacted. GitHub notified the upstream provider of the problem as soon as it was detected. The issue was resolved after the upstream provider rolled back a recent change that caused the disruption. GitHub will continue to enhance our monitoring and alerting systems to reduce the time it takes to detect and mitigate similar issues in the future.

From GitHub Copilot’s published incident history: for incidents before Rewindex began polling this status page, only the final update text is available.

Archive proof

Rewindex commits each version of an incident it captures to a daily checkpoint, chains it to the day before, and has the checkpoint timestamped by FreeTSA and DigiCert.

How the archive is checked, and what it cannot prove.

This incident predates live tracking (October 17, 2026). It came from the vendor’s own published history, which is not covered by checkpoints.

Impact, status and times are the vendor’s own, as last archived. View on www.githubstatus.com (opens in new tab).

Cite this

Status incident (vendor impact label: minor) posted by GitHub Copilot, started 2025-09-29 18:39 UTC, resolved after 33 min, 1 update(s).

Title: Disruption with Gemini 2.5 Pro and Gemini 2.0 Flash in Copilot
Vendor: GitHub Copilot
Date: 2025-09-29 18:39 UTC
URL: https://rewindex.com/company/github-copilot/incidents/0s5rb1l03m76

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