# Cerebras: Major incident: Service Unavailable

**Summary:** _summary pending_
- Kind: Major incident · Label: major (vendor)
- Changed: 2025-06-19 18:30 UTC · Detected: 2026-10-19 17:03 UTC
- [Source: https://stspg.io/4yxqmw9tnpcj](https://stspg.io/4yxqmw9tnpcj)
- [Company: Cerebras](https://rewindex.com/company/cerebras.md)
- Versions: before (none: first archived) → after incident\_version:665/dn1zd03y82zv@e245323323e8
- Change 1 of 1 for this incident

Incident page (full timeline): [Service Unavailable](https://rewindex.com/company/cerebras/incidents/dn1zd03y82zv.md)
## What changed

**1. Added: Title**

```diff
+ Service Unavailable
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2025-06-19 18:30 UTC
```

**5. Added: Resolved time**

```diff
+ 2025-06-19 18:30 UTC
```

**6. Added: Update** (resolved) · 2025-06-19 18:30 UTC

```diff
+ Llama3.1-8B was unavailable. We restored normal service performance at 3:21 PM EST on June 19th.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2025-06-19 18:30 UTC | Major incident: 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._


---
Canonical: https://rewindex.com/change/i8139ea141a5924 · Markdown: https://rewindex.com/change/i8139ea141a5924.md · JSON: https://rewindex.com/api/v1/changes/i8139ea141a5924 · Generated 2026-10-20T00:01:04.782Z