Is Cerebras Inference down? › Outage history › Sep 25, 2026
Cerebras Inference partial outage on Sep 25, 2026: what happened
On Sep 25, 2026, the Cerebras Inference status page reported "Partial Service Disruption". About 4 hours 58 min: from Sep 25, 2026, 12:16 UTC to Sep 25, 2026, 17:14 UTC, by the official start and resolution times.
Cerebras Inference right now
At our last refresh (Oct 22, 2026, 12:35 UTC) Cerebras Inference was up: All Systems Operational.
- Started
- Sep 25, 2026, 12:16 UTC
- Resolved
- Sep 25, 2026, 17:14 UTC
- Duration
- 4 hours 58 min
- Official impact
- Major
- Affected
- GPT-OSS-120B, Qwen-3.8-27b
- Source
- Partial Service Disruption on the Cerebras Inference status page
The Cerebras Inference status page rated the impact "Major": a partial outage. Some parts or some users were affected; it was not a complete outage.
What caused the Cerebras Inference partial outage?
The Cerebras Inference status page has not published a cause. Its updates describe the symptoms only.
When was it fixed?
The Cerebras Inference status page marked it resolved at Sep 25, 2026, 17:14 UTC, 4 hours 58 min after it started. A fix was in place and being monitored from Sep 25, 2026, 13:41 UTC. Its resolution note: "The incident has been resolved"
Timeline of official updates
Every update the Cerebras Inference status page posted, oldest first. Times are UTC.
Sep 25, 2026, 12:16 UTC investigating
Some features may be temporarily unavailable since UTC 10:54. We are currently working to resume normal service performance. We will provide further updates as we make progress.
Sep 25, 2026, 13:41 UTC monitoring
Services are back up. We are still investigating the root cause.
Sep 25, 2026, 17:14 UTC resolved
The incident has been resolved
Cerebras Inference partial outage questions
What caused the Cerebras Inference partial outage on Sep 25, 2026?
The Cerebras Inference status page has not published a cause.
When was the Cerebras Inference partial outage on Sep 25, 2026 fixed?
The Cerebras Inference status page marked it resolved at Sep 25, 2026, 17:14 UTC, 4 hours 58 min after it started. A fix was in place and being monitored from Sep 25, 2026, 13:41 UTC. Its resolution note: "The incident has been resolved"
How long did the Cerebras Inference partial outage last?
About 4 hours 58 min: from Sep 25, 2026, 12:16 UTC to Sep 25, 2026, 17:14 UTC, by the official start and resolution times.
Was Cerebras Inference completely down?
No. The Cerebras Inference status page rated the impact "Major": a partial outage. Some parts or some users were affected; it was not a complete outage. The affected parts listed were: GPT-OSS-120B, Qwen-3.8-27b.
Which parts of Cerebras Inference were affected?
The Cerebras Inference status page listed: GPT-OSS-120B, Qwen-3.8-27b.
Other recent Cerebras Inference incidents
- Resolved Aug 27, 2026, 12:05 UTC, duration not stated
- Partial Service Disruption Jul 29, 2026, 14:14 UTC, duration not stated
- Partial Service Disruption Jun 3, 2026, 14:09 UTC, 1 hour 30 min
- qwen-3-235b-a22b-instruct-2507 Service Unavailable May 1, 2026, 07:59 UTC, 58 minutes
- Service disruption with qwen-3-235b-a22b-instruct-2507 Apr 3, 2026, 10:42 UTC, duration not stated
- Partial service disruption with GPT-OSS-120B Apr 3, 2026, 10:38 UTC, duration not stated
Full Cerebras Inference outage history and biggest outages → · Recent outages across all services →
Quotes are the Cerebras Inference status page's own words, from the official incident. Is It Up or Down is independent and not affiliated with Cerebras Inference. Times are UTC.