# GitHub: Incident silently edited: Copilot experiencing degraded model availability for some GPT models

> Incident silently edited: Copilot experiencing degraded model availability for some GPT models. Detected 2026-11-13 by Rewindex: what changed on GitHub’s status page, with the before/after diff.

Canonical: https://rewindex.com/change/rb29521cf08ca5e
Last updated: 2026-11-13T21:43:37Z

**Summary:** _summary pending_
- Kind: Silent edit · Label: not classified yet
- Changed: 2026-11-13 21:43 UTC · Detected: 2026-11-13 21:43 UTC
- [Source: https://www.githubstatus.com/incidents/51drrqvsv66g](https://www.githubstatus.com/incidents/51drrqvsv66g)
- [Company: GitHub](https://rewindex.com/company/github.md)
- Versions: before incident\_version:187/51drrqvsv66g@eba6f76a4fb5 → after incident\_version:187/51drrqvsv66g@c70d60f3cb43
- Change 4 of 4 for this incident

Incident page (full timeline): [Copilot experiencing degraded model availability for some GPT models](https://rewindex.com/company/github/incidents/51drrqvsv66g.md)
## What changed

**1. Changed: Update** (resolved) · 2026-11-13 21:27 UTC

```diff
- This incident has been resolved. Thank you for your patience and understanding as we addressed this issue. A detailed root cause analysis will be shared as soon as it is available.
+ Between 19:05 and 21:27 UTC on November 13, 2026, GitHub Copilot experienced degradation affecting GPT-6.1 Terra, GPT-5.6 Sol, and GPT-6 Luna models. 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.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-11-13 20:53 UTC | [Incident updated: Copilot experiencing degraded model availability for some GPT models](https://rewindex.com/change/r38fbb6516cee8a.md) |  |
| 2026-11-13 21:23 UTC | [Incident updated: Copilot experiencing degraded model availability for some GPT models](https://rewindex.com/change/r0d72835a27d7dd.md) |  |
| 2026-11-13 21:33 UTC | [Incident updated: Copilot experiencing degraded model availability for some GPT models](https://rewindex.com/change/raa56cd76a2c90d.md) |  |
| 2026-11-13 21:43 UTC | Incident silently edited: Copilot experiencing degraded model availability for some GPT models (this change) |  |

Previous: [change](https://rewindex.com/change/raa56cd76a2c90d.md) · All GitHub changes: [timeline](https://rewindex.com/company/github/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._

## Cite this

Incident silently edited: Copilot experiencing degraded model availability for some GPT models on GitHub’s status page, changed 2026-11-13 21:43 UTC (change 4 of 4).

- Canonical URL: https://rewindex.com/change/rb29521cf08ca5e
- Citation: GitHub, “Incident silently edited: Copilot experiencing degraded model availability for some GPT models” (2026-11-13 21:43 UTC). Archived by Rewindex: https://rewindex.com/change/rb29521cf08ca5e (CC BY 4.0).
- Markdown link: `[GitHub: Incident silently edited: Copilot experiencing degraded model availability for some GPT models (2026-11-13)](https://rewindex.com/change/rb29521cf08ca5e)`


---
Canonical: https://rewindex.com/change/rb29521cf08ca5e · Markdown: https://rewindex.com/change/rb29521cf08ca5e.md · JSON: https://rewindex.com/api/v1/changes/rb29521cf08ca5e · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-14T04:20:10.759Z