DeepSeek Services Return After an Outage Lasting About Five Hours

DeepSeek’s web chat, app and API services were back online after an outage lasting about five hours that stalled prompts, triggered server errors and interrupted some conversations.

The disruption began at 8:11 p.m. ET on Oct. 14 (00:11 UTC on Oct. 15), affecting the Chat service, V4 Pro API and V4.1 Flash API. Users encountered messages that servers were busy or temporarily unavailable, while some conversations stopped mid-response.

At 9:08 p.m. ET on Oct. 14 (01:08 UTC on Oct. 15), an incident update said the cause had been identified and repairs were underway. The three affected services were still listed as fully down at that point.

A prior update on the outage tracked the disruption while the services remained unavailable. DeepSeek’s systems later showed normal operation.