Claude API slowdown on 6 October 2026

Claude API from Amsterdam, Mumbai, San Francisco, Singapore, Tokyo, Montreal: slower than usual; 2026-10-06 17:30 UTC to 2026-10-06 19:30 UTC: peak first visible token 2.11 s vs a usual 1.28 s.

What our checks saw: Slower than usual
Cities affected: Amsterdam, Mumbai, San Francisco, Singapore, Tokyo, Montreal
When: 6 Oct, 17:30 UTC to 6 Oct, 19:30 UTC
How long: 2 hours
Slowest check: 2.11 s, usually 1.28 s
Anthropic'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 (1.21 s)Slower than usualSlow check outside the incidentIncident

Every check as a table

Time (UTC)	Check	Reading
14:30	1.17 s	Normal
15:00	1.06 s	Normal
15:30	1.16 s	Normal
16:00	1.16 s	Normal
16:30	1.39 s	Normal
17:00	1.83 s	Slower than usual
17:30	2.23 s	Slower than usual
18:00	1.30 s	Normal
18:30	1.35 s	Normal
19:00	1.33 s	Normal
19:30	1.17 s	Normal
20:00	1.56 s	Normal
20:30	1.49 s	Normal
21:00	1.73 s	Normal
21:30	1.59 s	Normal
22:00	2.13 s	Slower than usual
22:30	1.32 s	Normal

San Francisco

Each check (UTC)Usual (1.08 s)Slower than usualSlow check outside the incidentIncident

Every check as a table

Time (UTC)	Check	Reading
14:30	1.04 s	Normal
15:00	1.10 s	Normal
15:30	1.06 s	Normal
16:00	1.05 s	Normal
16:30	–	No check
17:00	1.63 s	No check
17:30	2.03 s	Slower than usual
18:00	1.32 s	Normal
18:30	1.18 s	Normal
19:00	1.25 s	Normal
19:30	1.10 s	Normal
20:00	1.23 s	Normal
20:30	1.29 s	Normal
21:00	1.42 s	Normal
21:30	1.38 s	Normal
22:00	1.76 s	Slower than usual
22:30	1.21 s	Normal

Montreal

Each check (UTC)Usual (1.09 s)Slower than usualSlow check outside the incidentIncident

Every check as a table

Time (UTC)	Check	Reading
14:30	1.09 s	Normal
15:00	1.11 s	Normal
15:30	1.01 s	Normal
16:00	1.04 s	Normal
16:30	1.44 s	Normal
17:00	1.46 s	Normal
17:30	1.94 s	Slower than usual
18:00	1.19 s	Normal
18:30	1.15 s	Normal
19:00	1.22 s	Normal
19:30	1.13 s	Normal
20:00	1.38 s	Normal
20:30	1.34 s	Normal
21:00	1.36 s	Normal
21:30	1.44 s	Normal
22:00	1.72 s	Slower than usual
22:30	1.22 s	Normal

Singapore

Each check (UTC)Usual (1.25 s)Slower than usualIncident

Every check as a table

Time (UTC)	Check	Reading
14:30	1.27 s	Normal
15:00	1.25 s	Normal
15:30	1.26 s	Normal
16:00	1.24 s	Normal
16:30	–	No check
17:00	1.84 s	No check
17:30	1.98 s	Slower than usual
18:00	1.39 s	Normal
18:30	1.29 s	Normal
19:00	1.39 s	Normal
19:30	1.37 s	Normal
20:00	1.40 s	Normal
20:30	1.41 s	Normal
21:00	1.84 s	Normal
21:30	1.40 s	Normal
22:00	1.72 s	Normal
22:30	1.26 s	Normal

Tokyo

Each check (UTC)Usual (1.17 s)Slower than usualIncident

Every check as a table

Time (UTC)	Check	Reading
14:30	1.13 s	Normal
15:00	1.15 s	Normal
15:30	1.22 s	Normal
16:00	1.11 s	Normal
16:30	–	No check
17:00	2.11 s	No check
17:30	1.93 s	Slower than usual
18:00	1.23 s	Normal
18:30	1.25 s	Normal
19:00	1.26 s	Normal
19:30	1.32 s	Normal
20:00	1.36 s	Normal
20:30	1.32 s	Normal
21:00	1.40 s	Normal
21:30	1.49 s	Normal
22:00	1.52 s	Normal
22:30	1.23 s	Normal

Mumbai

Each check (UTC)Usual (1.28 s)Slower than usualSlow check outside the incidentIncident

Every check as a table

Time (UTC)	Check	Reading
14:30	1.29 s	Normal
15:00	1.29 s	Normal
15:30	1.33 s	Normal
16:00	1.28 s	Normal
16:30	–	No check
17:00	1.83 s	No check
17:30	2.40 s	Slower than usual
18:00	1.33 s	Normal
18:30	1.53 s	Normal
19:00	1.48 s	Normal
19:30	1.32 s	Normal
20:00	1.47 s	Normal
20:30	1.44 s	Normal
21:00	1.69 s	Normal
21:30	1.56 s	Normal
22:00	2.13 s	Slower than usual
22:30	1.31 s	Normal

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