DeepSeek API slowdown on 25 September 2026

DeepSeek API from Amsterdam, Mumbai, San Francisco, Singapore, Tokyo, Montreal: slower than usual; 2026-09-25 16:00 UTC to 2026-09-25 23:30 UTC: peak first visible token 0.96 s vs a usual 0.69 s.

What our checks saw: Slower than usual
Cities affected: Amsterdam, Mumbai, San Francisco, Singapore, Tokyo, Montreal
When: 25 Sept, 16:00 UTC to 25 Sept, 23:30 UTC
How long: 7.5 hours
Slowest check: 965 ms, usually 691 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.

Amsterdam

Each check (UTC)Usual (677 ms)Incident

Every check as a table

Time (UTC)	Check	Reading
13:00	643 ms	Normal
13:30	605 ms	Normal
14:00	866 ms	Normal
14:30	617 ms	Normal
15:00	594 ms	Normal
15:30	891 ms	Normal
16:00	885 ms	Normal
16:30	871 ms	Normal
17:00	902 ms	Normal
17:30	895 ms	Normal
18:00	910 ms	Normal
18:30	901 ms	Normal
19:00	951 ms	Normal
19:30	932 ms	Normal
20:00	925 ms	Normal
20:30	898 ms	Normal
21:00	948 ms	Normal
21:30	829 ms	Normal
22:00	820 ms	Normal
22:30	604 ms	Normal
23:00	481 ms	Normal
23:30	602 ms	Normal
00:00	646 ms	Normal
00:30	616 ms	Normal
01:00	609 ms	Normal
01:30	559 ms	Normal
02:00	642 ms	Normal
02:30	580 ms	Normal

San Francisco

Each check (UTC)Usual (679 ms)Incident

Every check as a table

Time (UTC)	Check	Reading
13:00	785 ms	Normal
13:30	596 ms	Normal
14:00	926 ms	Normal
14:30	532 ms	Normal
15:00	648 ms	Normal
15:30	679 ms	Normal
16:00	903 ms	Normal
16:30	892 ms	Normal
17:00	893 ms	Normal
17:30	900 ms	Normal
18:00	938 ms	Normal
18:30	937 ms	Normal
19:00	899 ms	Normal
19:30	906 ms	Normal
20:00	915 ms	Normal
20:30	897 ms	Normal
21:00	897 ms	Normal
21:30	721 ms	Normal
22:00	842 ms	Normal
22:30	692 ms	Normal
23:00	581 ms	Normal
23:30	624 ms	Normal
00:00	582 ms	Normal
00:30	786 ms	Normal
01:00	605 ms	Normal
01:30	630 ms	Normal
02:00	626 ms	Normal
02:30	680 ms	Normal

Montreal

Each check (UTC)Usual (691 ms)Incident

Every check as a table

Time (UTC)	Check	Reading
13:00	718 ms	Normal
13:30	658 ms	Normal
14:00	904 ms	Normal
14:30	650 ms	Normal
15:00	642 ms	Normal
15:30	969 ms	Normal
16:00	928 ms	Normal
16:30	961 ms	Normal
17:00	909 ms	Normal
17:30	949 ms	Normal
18:00	924 ms	Normal
18:30	953 ms	Normal
19:00	949 ms	Normal
19:30	918 ms	Normal
20:00	945 ms	Normal
20:30	969 ms	Normal
21:00	960 ms	Normal
21:30	824 ms	Normal
22:00	767 ms	Normal
22:30	546 ms	Normal
23:00	534 ms	Normal
23:30	648 ms	Normal
00:00	681 ms	Normal
00:30	720 ms	Normal
01:00	682 ms	Normal
01:30	642 ms	Normal
02:00	817 ms	Normal
02:30	648 ms	Normal

Singapore

Each check (UTC)Usual (463 ms)Slower than usualSlow check outside the incidentIncident

Every check as a table

Time (UTC)	Check	Reading
13:00	526 ms	Normal
13:30	482 ms	Normal
14:00	735 ms	Slower than usual
14:30	672 ms	Normal
15:00	381 ms	Normal
15:30	652 ms	Normal
16:00	698 ms	Slower than usual
16:30	710 ms	Slower than usual
17:00	722 ms	Slower than usual
17:30	763 ms	Slower than usual
18:00	742 ms	Slower than usual
18:30	743 ms	Slower than usual
19:00	741 ms	Slower than usual
19:30	712 ms	Slower than usual
20:00	774 ms	Slower than usual
20:30	736 ms	Slower than usual
21:00	748 ms	Slower than usual
21:30	521 ms	Normal
22:00	745 ms	Slower than usual
22:30	340 ms	Normal
23:00	420 ms	Normal
23:30	459 ms	Normal
00:00	529 ms	Normal
00:30	656 ms	Normal
01:00	419 ms	Normal
01:30	226 ms	Normal
02:00	538 ms	Normal
02:30	387 ms	Normal

Tokyo

Each check (UTC)Usual (587 ms)Incident

Every check as a table

Time (UTC)	Check	Reading
13:00	725 ms	Normal
13:30	723 ms	Normal
14:00	820 ms	Normal
14:30	566 ms	Normal
15:00	484 ms	Normal
15:30	877 ms	Normal
16:00	783 ms	Normal
16:30	755 ms	Normal
17:00	832 ms	Normal
17:30	833 ms	Normal
18:00	846 ms	Normal
18:30	840 ms	Normal
19:00	809 ms	Normal
19:30	784 ms	Normal
20:00	794 ms	Normal
20:30	856 ms	Normal
21:00	792 ms	Normal
21:30	629 ms	Normal
22:00	815 ms	Normal
22:30	322 ms	Normal
23:00	594 ms	Normal
23:30	485 ms	Normal
00:00	571 ms	Normal
00:30	541 ms	Normal
01:00	615 ms	Normal
01:30	619 ms	Normal
02:00	507 ms	Normal
02:30	539 ms	Normal

Mumbai

Each check (UTC)Usual (553 ms)Incident

Every check as a table

Time (UTC)	Check	Reading
13:00	532 ms	Normal
13:30	491 ms	Normal
14:00	792 ms	Normal
14:30	403 ms	Normal
15:00	501 ms	Normal
15:30	703 ms	Normal
16:00	769 ms	Normal
16:30	756 ms	Normal
17:00	789 ms	Normal
17:30	780 ms	Normal
18:00	805 ms	Normal
18:30	815 ms	Normal
19:00	752 ms	Normal
19:30	788 ms	Normal
20:00	818 ms	Normal
20:30	756 ms	Normal
21:00	773 ms	Normal
21:30	577 ms	Normal
22:00	721 ms	Normal
22:30	468 ms	Normal
23:00	343 ms	Normal
23:30	473 ms	Normal
00:00	518 ms	Normal
00:30	537 ms	Normal
01:00	439 ms	Normal
01:30	516 ms	Normal
02:00	520 ms	Normal
02:30	560 ms	Normal

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