# Cerebras: Major incident: Llama 3.3 70B Service Unavailable

**Summary:** _summary pending_
- Kind: Major incident · Label: major (vendor)
- Changed: 2026-01-18 21:40 UTC · Detected: 2026-10-19 17:03 UTC
- [Source: https://stspg.io/2h6gwbm0yp69](https://stspg.io/2h6gwbm0yp69)
- [Company: Cerebras](https://rewindex.com/company/cerebras.md)
- Versions: before (none: first archived) → after incident\_version:665/3k88y08my27d@9b9804691fa8
- Change 1 of 1 for this incident

Incident page (full timeline): [Llama 3.3 70B Service Unavailable](https://rewindex.com/company/cerebras/incidents/3k88y08my27d.md)
## What changed

**1. Added: Title**

```diff
+ Llama 3.3 70B Service Unavailable
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-01-18 21:40 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-01-19 00:36 UTC
```

**6. Added: Affected components**

```diff
+ Llama-3.3-70B
```

**7. Added: Update** (investigating) · 2026-01-18 21:40 UTC

```diff
+ The service is currently inaccessible. We are currently working urgently to restore service capabilities. We will provide further updates as we make progress.
```

**8. Added: Update** (identified) · 2026-01-18 23:52 UTC

```diff
+ The issue has been root caused and fix is being implemented to bring the service backup.
```

**9. Added: Update** (monitoring) · 2026-01-19 00:03 UTC

```diff
+ The fix has been rolled out and the service has resumed consuming traffic and being monitored.
```

**10. Added: Update** (investigating) · 2026-01-19 00:35 UTC

```diff
+ Between 12.45 PM PT and 4.00 PM PT users experienced service unavailability with Llama 3.3 70B, caused by a datacenter issue. We have deployed a fix and the issue is now resolved, model endpoint is operational.
```

**11. Added: Update** (resolved) · 2026-01-19 00:36 UTC

```diff
+ Between 12.45 PM PT and 4.00 PM PT users experienced service unavailability with Llama 3.3 70B, caused by a datacenter issue. We have deployed a fix and the issue is now resolved, model endpoint is operational.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-01-18 21:40 UTC | Major incident: Llama 3.3 70B Service Unavailable (this change) | major |

All Cerebras changes: [timeline](https://rewindex.com/company/cerebras/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/i1355cf601eb5b9 · Markdown: https://rewindex.com/change/i1355cf601eb5b9.md · JSON: https://rewindex.com/api/v1/changes/i1355cf601eb5b9 · Generated 2026-10-19T23:13:30.362Z