One-line summary
From around 8:00 AM Beijing time on October 15, 2026, DeepSeek's web and app widely showed "servers temporarily unavailable"; the official status page logged a partial web/API outage at 8:11, confirming impact on the chat service and the DeepSeek V4.1 Flash API, with the cause identified and a fix being implemented. As of 9:30, Sina Tech testing showed the service still not fully restored; track real-time progress on the official status page at https://status.deepseek.com/.
Background
DeepSeek is a Chinese AI company offering chat services through its website, app and API, and released the DeepSeek V4.1 Flash model in September 2026. On the morning of October 15, 2026, many users reported that DeepSeek's website and app were unusable, showing "servers temporarily unavailable". According to CLS (Cailian Press), the message appeared on DeepSeek's web and app shortly after 8:00 AM Beijing time on October 15.
Incident Timeline & Official Announcement
| Time (Beijing time, October 15, 2026) | Event |
|---|---|
| After ~08:00 | Website and app show "servers temporarily unavailable"; widespread user reports |
| 08:11 | Official status page first logs partial web/API outage |
| 09:17–09:40 | CLS, 36Kr and Southern Metropolis Daily report; status page shows cause identified, fix being implemented |
| 09:30 | Sina Tech testing finds the app still unavailable |
| Status page update | Status page shows investigation ongoing, affecting DeepSeek V4.1 Flash API and chat service |
According to DeepSeek's official status page and media reports, three areas were affected: partial interruption of the DeepSeek V4.1 Flash API service, partial interruption of the chat service, and degraded performance of the website/API overall. The official status page noted "the issue is being investigated to identify the cause", later updating that the cause had been identified and a fix was being implemented. Sina Tech reported that public records show this was at least the 18th large-scale service anomaly for DeepSeek in 2026. The restoration time is subject to announcements on the official status page.
How to Check DeepSeek Service Status
The first entry point for real-time service status is the official status page https://status.deepseek.com/, which lists the current state and historical uptime of each service component (DeepSeek V4 Pro API, DeepSeek V4.1 Flash API, chat service, file upload service, search service), together with incident timelines. Per the official status page, availability from July to October 2026 was: DeepSeek V4 Pro API 99.92%, DeepSeek V4.1 Flash API 99.66%, chat service 99.64% (99.84% across its three components), file upload service 100.00%, and search service 99.92%. Third-party monitor Down for Everyone or Just Me (https://downforeveryoneorjustme.com/deepseek) provides an independent reachability reference; its results may lag the official page, so treat the official status page as authoritative when judging recovery.
Common Misconceptions
Misconception one: the website being unreachable means all services are down. The official status page lists components separately; this incident affected the chat service and the DeepSeek V4.1 Flash API, while the file upload and search services were not listed as affected. Misconception two: judging recovery time from third-party sites. Third-party monitors have probing intervals and delays, and the official page has recorded the timeline from 08:11 for this incident, so its incident update records should be checked first. Note: this is a single-day incident on October 15, 2026; the official status page did not announce a restoration time during the incident, and users can subscribe to status page updates for later progress.
Summary
On the morning of October 15, 2026, DeepSeek experienced a large-scale service outage; the company confirmed partial interruption of the chat service and the V4.1 Flash API and said the cause had been identified with a fix underway. To check whether service has recovered, visit the official status page https://status.deepseek.com/ and rely on its incident timeline and component status; third-party monitors serve only as cross-reference.
Sources & References
- DeepSeek official status page: https://status.deepseek.com/
- CLS (October 15, 2026): DeepSeek is down
- Sina Tech (October 15, 2026): DeepSeek morning service anomaly
- Southern Metropolis Daily (October 15, 2026): DeepSeek is down, servers temporarily unavailable
- Down for Everyone or Just Me: https://downforeveryoneorjustme.com/deepseek