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DeepSeek API slowdown on 12 October 2026

DeepSeek API from San Francisco, Singapore, Tokyo: slower than usual; 2026-10-12 15:30 UTC to 2026-10-12 19:00 UTC: peak first visible token 1.09 s vs a usual 0.72 s.

What our checks saw
Slower than usual
Cities affected
San Francisco, Singapore, Tokyo
When
to
How long
3.5 hours
Slowest check
1.09 s, usually 717 ms
DeepSeek's status page
Open it

Where our checks saw it

Each glowing city had slow or failing checks during the incident, shown at its worst. We test from 6 cities, so other places may have been hit too.

Our checks, city by city

Each point is one check every 30 minutes, from three hours before the incident to three hours after. Coloured points are the checks we counted as slower or failing. The shaded area shows how far above the usual time they were. Not affected: Amsterdam, Montreal, Mumbai.

San Francisco

Incident0 ms750 ms1.50 s12:3015:3018:3021:30
Each check (UTC)Usual (718 ms)Slower than usualIncident
Every check as a table
Time (UTC)CheckReading
12:30749 msNormal
13:00811 msNormal
13:30760 msNormal
14:00814 msNormal
14:30762 msNormal
15:00882 msNormal
15:301.30 sSlower than usual
16:00705 msNormal
16:30479 msNormal
17:00–No check
17:30620 msNo check
18:00897 msNormal
18:30553 msNormal
19:00749 msNormal
19:30599 msNormal
20:00618 msNormal
20:30787 msNormal
21:00527 msNormal
21:30634 msNormal
22:00714 msNormal

Singapore

Incident0 ms750 ms1.50 s12:3015:3018:3021:30
Each check (UTC)Usual (538 ms)Slower than usualSlow check outside the incidentIncident
Every check as a table
Time (UTC)CheckReading
12:30665 msNormal
13:00323 msNormal
13:30649 msNormal
14:00655 msNormal
14:30524 msNormal
15:00820 msSlower than usual
15:301.14 sSlower than usual
16:00642 msNormal
16:30265 msNormal
17:00–No check
17:30405 msNo check
18:00779 msNormal
18:30484 msNormal
19:00408 msNormal
19:30443 msNormal
20:00549 msNormal
20:30734 msNormal
21:00306 msNormal
21:30321 msNormal
22:00390 msNormal

Tokyo

Incident0 ms750 ms1.50 s12:3015:3018:3021:30
Each check (UTC)Usual (603 ms)Slower than usualIncident
Every check as a table
Time (UTC)CheckReading
12:30665 msNormal
13:00652 msNormal
13:30685 msNormal
14:00457 msNormal
14:30698 msNormal
15:00735 msNormal
15:301.20 sSlower than usual
16:00448 msNormal
16:30365 msNormal
17:00–No check
17:30466 msNo check
18:00863 msNormal
18:30305 msNormal
19:00515 msNormal
19:30606 msNormal
20:00704 msNormal
20:30764 msNormal
21:00526 msNormal
21:30418 msNormal
22:00701 msNormal

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