Cerebras experienced a minor incident on October 19, 2025 affecting GPT-OSS-120B, lasting 12h 1m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Oct 19, 2025, 02:37 AM UTC
We are experiencing issues with one of our datacenters. We are actively working on mitigation. Seeing minimal degradation of service at this point. Fortunately, this only impacts one datacenter, the rest are operational, and redundancies are in place. ETA recovery time for datacenter: 8 hours. We will actively keep you updated on the progress.
- investigating Oct 19, 2025, 02:37 AM UTC
We are continuing to investigate this issue.
- identified Oct 19, 2025, 02:41 AM UTC
Update: The issue has been root caused to a city water supply disruption. We are actively working on mitigation.
- resolved Oct 19, 2025, 02:38 PM UTC
Between Oct 18th 7 PM PT and Oct 19th 6.30 AM PT users experienced minor service disruption with Llama 3.3 70B, Qwen 3 32B, GPT OSS 120B, Qwen 3 235B Thinking, Qwen 3 Coder 480B because of a datacenter issue. We have deployed the fix and the issue is now resolved.