# AssemblyAI: Major incident: Requests failing for Slam-1 model

**Summary:** AssemblyAI reported a major partial outage affecting Slam-1 pre-recorded transcription requests, with slow processing, increased errors and failures. It started at 2025-10-22 17:56 UTC and was resolved at 2025-10-22 23:58 UTC, lasting 6 h 1 min. Universal requests were unaffected and offered as a workaround; Slam-1 performance returned to normal before resolution. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2025-10-22 17:56 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/xy7jrq5ff1yw](https://stspg.io/xy7jrq5ff1yw)
- [Company: AssemblyAI](https://rewindex.com/company/assemblyai.md)
- Versions: before (none: first archived) → after incident\_version:2/kk2b2lb495s2@2c496837a0f0
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Requests failing for Slam-1 model
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2025-10-22 17:56 UTC
```

**5. Added: Resolved time**

```diff
+ 2025-10-22 23:58 UTC
```

**6. Added: Affected components**

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

**7. Added: Update** (identified) · 2025-10-22 17:56 UTC

```diff
+ We are currently seeing longer-than-usual turnaround times for pre-recorded audio transcriptions that are using our Slam-1 model. Requests using the Universal model are unaffected. We are working to address this issue and will provide an update here as soon as possible.
```

**8. Added: Update** (identified) · 2025-10-22 18:01 UTC

```diff
+ We are now seeing increased error rates and failures for requests using the Slam-1 model so we are elevating this issue to a partial outage. Requests using Universal are working normally, so consider using that model as a short-term workaround if needed. Our team is working to resolve this issue as quickly as possible.
```

**9. Added: Update** (identified) · 2025-10-22 19:03 UTC

```diff
+ We are once again starting to see requests using Slam-1 succeed, but we are still working to fully resolve the issue. We will follow up with another update once the issue has been fully mitigated.
```

**10. Added: Update** (identified) · 2025-10-22 19:20 UTC

```diff
+ We are still seeing good success rates for requests using the Slam-1 model, but we are still seeing occasional slower-than-usual processing times, which we are working to address.
```

**11. Added: Update** (monitoring) · 2025-10-22 19:37 UTC

```diff
+ Success rates and turnaround times for requests using Slam-1 have returned to normal ranges, but we are continuing to monitor traffic to ensure continued good performance.
```

**12. Added: Update** (resolved) · 2025-10-22 23:58 UTC

```diff
+ We have continued to see good performance for requests using Slam-1 and are now marking this issue as resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2025-10-22 17:56 UTC | Major incident: Requests failing for Slam-1 model (this change) | outage |

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._


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Canonical: https://rewindex.com/change/i32c026e2790166 · Markdown: https://rewindex.com/change/i32c026e2790166.md · JSON: https://rewindex.com/api/v1/changes/i32c026e2790166 · Generated 2026-10-18T02:55:19.232Z