# AssemblyAI: Major incident: Increased Processing Times and Errors on US Endpoint for Universal-3.5 Pro Async model

**Summary:** AssemblyAI reported a major degradation of Universal-3.5 Pro async transcription on its US endpoint: slower processing and failed requests; EU was unaffected. The incident started at 2026-10-06 14:00 UTC and resolved at 2026-10-06 14:25 UTC (25 min), with impact reported beginning at 1:35p UTC. A fix restored normal processing; failed requests can be safely resubmitted. _(machine-written, sol)_
- Kind: Major incident · Label: degradation (model (Jev))
- Changed: 2026-10-06 14:00 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/v6r2406ql71h](https://stspg.io/v6r2406ql71h)
- [Company: AssemblyAI](https://rewindex.com/company/assemblyai.md)
- Versions: before (none: first archived) → after incident\_version:2/jjbqfxbyvf4q@3884cf03c895
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Increased Processing Times and Errors on US Endpoint for Universal-3.5 Pro Async model
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-10-06 14:00 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-10-06 14:25 UTC
```

**6. Added: Affected components**

```diff
+ APIs - Asynchronous API, Asynchronous API
```

**7. Added: Update** (investigating) · 2026-10-06 14:00 UTC

```diff
+ We have identified an issue affecting asynchronous transcription requests using Universal-3.5 Pro on our US endpoint. Beginning at 1:35p UTC, requests have increased processing time and some are resulting in errors. Our team is working to restore normal processing. Our EU endpoint is not affected. We will continue to provide updates as more information becomes available.
```

**8. Added: Update** (identified) · 2026-10-06 14:10 UTC

```diff
+ We have identified the issue and a fix has been released. We will provide further updates as soon as we can.
```

**9. Added: Update** (monitoring) · 2026-10-06 14:13 UTC

```diff
+ A fix has been implemented. We are seeing processing times return to the normal ranges and are continuing to monitor the results.
```

**10. Added: Update** (resolved) · 2026-10-06 14:25 UTC

```diff
+ This incident has been resolved. Between approximately 1:35p and 2:20p UTC, async transcription requests using Universal-3.5 Pro on our US endpoint took longer than usual to complete, and some requests failed. Processing times have returned to normal ranges and any requests that failed during this window can be safely resubmitted.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-10-06 14:00 UTC | Major incident: Increased Processing Times and Errors on US Endpoint for Universal-3.5 Pro Async model (this change) | degradation |

All AssemblyAI changes: [timeline](https://rewindex.com/company/assemblyai/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._


---
Canonical: https://rewindex.com/change/ifa0213aebeb09a · Markdown: https://rewindex.com/change/ifa0213aebeb09a.md · JSON: https://rewindex.com/api/v1/changes/ifa0213aebeb09a · Generated 2026-10-18T02:26:10.756Z