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

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2025-09-29 18:39 UTC · Resolved: 2025-09-29 19:12 UTC · Duration: 33 min
- Updates: 1
- [Vendor status page: https://www.githubstatus.com/incidents/0s5rb1l03m76](https://www.githubstatus.com/incidents/0s5rb1l03m76)
- [Company: GitHub](https://rewindex.com/company/github.md)

## Part of an outage event

- [Gemini outage, Sep 29, 2025: 9 vendors, 9 incidents](https://rewindex.com/events/2025-09-29-google-gemini-api)
- This incident blames Gemini as the cause. (hop 1, posted +8 min vs the first vendor naming Gemini)
- Evidence: “…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…”

```mermaid
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 (this incident)<br/>posted +8 min"]:::me
  h1 --- me
```

_Detected automatically from incidents that started together and named the same provider; a link means one incident named another vendor, not a confirmed cause._

## Timeline of updates

- **resolved** 2025-09-29 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 the vendor’s published history: only the final update text is available for incidents before Rewindex began polling this page._


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Canonical: https://rewindex.com/company/github/incidents/0s5rb1l03m76 · Markdown: https://rewindex.com/company/github/incidents/0s5rb1l03m76.md · JSON: https://rewindex.com/api/v1/companies/github/incidents/0s5rb1l03m76 · Generated 2026-10-20T00:01:26.977Z