Outage report · Partial outage
Cerebras Inference outage on Feb 4, 2026
Partial Service Disruption Qwen 235B
What happened
Cerebras Inference reported a partial outage starting Feb 4, 2026, 16:59 UTC. It was marked resolved at Feb 5, 2026, 02:07 UTC.
- The incident lasted 9h 8m from first report to resolution.
- It was the longest significant outage Cerebras Inference reported in the 12 months up to it.
- Cerebras Inference had reported 3 other partial or major outages in the 90 days before it.
- 5 other vendors we track reported a significant incident within 12 hours of it.
Latest update from Cerebras Inference
Between 06:00 AM PT and 06:00 PM PT users experienced service disruption with Qwen 3 235B Instruct. We have taken action to address recent changes in traffic patterns and capacity, reducing the disruption. We plan to monitor this endpoint and evaluate restoring rate limits in the next week for Pay Go users.
What our independent monitoring saw
Our independent monitoring of Cerebras Inference started after this incident, so this report is based on Cerebras Inference's status page.
Other outages around the same time
Significant incidents other vendors reported within 12 hours of this one.
Cerebras Inference's overall reliability
Cerebras Inference has a reliability score of 89.3/100, with 99.88% effective uptime and 2 incidents over the last 90 days.
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