# OpenAI: Incident silently edited: Degraded performance in ChatGPT, Codex, and APIs

> Incident silently edited: Degraded performance in ChatGPT, Codex, and APIs. Detected 2026-10-21 by Rewindex: what changed on OpenAI’s status page, with the before/after diff.

Canonical: https://rewindex.com/change/rac8c565f079f70
Last updated: 2026-10-21T03:33:17Z

**Summary:** _summary pending_
- Kind: Silent edit · Label: minor edit (typesafe/jev-1.13-20260917)
- Changed: 2026-10-21 03:33 UTC · Detected: 2026-10-21 03:33 UTC
- [Source: https://status.openai.com/incidents/01M5E4G39TD1BW1QWHZG6RFA5H](https://status.openai.com/incidents/01M5E4G39TD1BW1QWHZG6RFA5H)
- [Company: OpenAI](https://rewindex.com/company/openai.md)
- Versions: before incident\_version:31/01M5E4G39TD1BW1QWHZG6RFA5H@06cb93876223 → after incident\_version:31/01M5E4G39TD1BW1QWHZG6RFA5H@ca0bcc2bb632
- Change 2 of 2 for this incident

Incident page (full timeline): [Degraded performance in ChatGPT, Codex, and APIs](https://rewindex.com/company/openai/incidents/01M5E4G39TD1BW1QWHZG6RFA5H.md)
## What changed

**1. Changed: Resolved time**

```diff
- 2026-10-21 02:48 UTC
+ 2026-10-21 03:28 UTC
```

**2. Changed: Update** (monitoring) · 2026-10-21 02:48 UTC

```diff
- We have applied the mitigation and are monitoring the recovery.
+ We have applied the mitigation and are monitoring the recovery.
```

**3. Changed: Update** (resolved) · 2026-10-21 03:28 UTC

```diff
- All impacted services have now fully recovered.
+ All impacted services have now fully recovered.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-10-21 02:53 UTC | [Incident updated: Degraded performance in ChatGPT, Codex, and APIs](https://rewindex.com/change/re5c0a11c169680.md) | Normal progress |
| 2026-10-21 03:33 UTC | Incident silently edited: Degraded performance in ChatGPT, Codex, and APIs (this change) | minor edit |

Previous: [change](https://rewindex.com/change/re5c0a11c169680.md) · All OpenAI changes: [timeline](https://rewindex.com/company/openai/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: Degraded performance in ChatGPT, Codex, and APIs on OpenAI’s status page, changed 2026-10-21 03:33 UTC (change 2 of 2).

- Canonical URL: https://rewindex.com/change/rac8c565f079f70
- Citation: OpenAI, “Incident silently edited: Degraded performance in ChatGPT, Codex, and APIs” (2026-10-21 03:33 UTC). Archived by Rewindex: https://rewindex.com/change/rac8c565f079f70 (CC BY 4.0).
- Markdown link: `[OpenAI: Incident silently edited: Degraded performance in ChatGPT, Codex, and APIs (2026-10-21)](https://rewindex.com/change/rac8c565f079f70)`


---
Canonical: https://rewindex.com/change/rac8c565f079f70 · Markdown: https://rewindex.com/change/rac8c565f079f70.md · JSON: https://rewindex.com/api/v1/changes/rac8c565f079f70 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T16:01:07.046Z