Who is down right now

Down now20This week248

20 down now · 248 this week

Anthropic outage history and postmortems

AI · San Francisco, US · 49 incidents in 90 days · 97.5% implied uptime · last 32h ago

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No open incidents· checked 1h 35m agoLast resolved 32h 10m ago: Degraded performance for Claude Fable 5.1, lasted 26m

History

MinorNov 8, 08:28 UTC
Degraded performance for Claude Fable 5.1lasted 26m
MinorOct 28, 16:19 UTC
Elevated errors affecting the Google Calendar connectorlasted 3h 46m
MinorOct 28, 03:59 UTC
Elevated errors affecting the Gmail connectorlasted 1h 49m
MajorOct 27, 15:09 UTC
Elevated errors for Claude Sonnet 5.5lasted 41m
MajorOct 27, 09:14 UTC
Elevated errors for Claude Sonnet 5.5lasted 42m
MajorOct 25, 08:17 UTC
Elevated errors for Claude Fable 5.1lasted 32m
MajorOct 25, 06:14 UTC
Elevated errors for Claude Sonnet 5.5 and other modelslasted 1h 39m
MajorOct 24, 05:16 UTC
Elevated errors for Claude Fable 5 and Claude Fable 5.1lasted 37m
MajorOct 24, 00:31 UTC
Elevated errors for Claude Opus 5.5lasted 6m
CriticalOct 23, 23:37 UTC
Elevated errors for Claude Fable 5.1, Sonnet 5.5, and Haiku 5.5lasted 34m
MinorOct 22, 03:50 UTC
Elevated errors affecting Connectorslasted 4h 17m
MinorOct 21, 19:49 UTC
Degraded performance for Claude Fable 5lasted 40m
NoticeOct 7, 21:23 UTC
Issue with spend limitslasted 0m
MajorOct 7, 13:25 UTC
Elevated errors on platform.claude.comlasted 6d 4h
MajorOct 7, 01:20 UTC
Elevated errors loading usage data on platform.claude.comlasted 1h 13m
MajorOct 6, 12:24 UTC
Elevated errors for Claude Opus 5.5lasted 19m
MajorOct 5, 13:05 UTC
Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1lasted 16m
MinorOct 1, 16:20 UTC
Delayed credits on the Claude Platformlasted 6h 16m
MajorSep 29, 14:21 UTC
Elevated errors on claude.ai, Claude Code, Claude Cowork and the Claude APIlasted 2h 6m
MajorSep 22, 00:57 UTC
Elevated errors for multiple modelslasted 1h 38m
NoticeSep 16, 16:18 UTC
Issues with Google Play subscriptionslasted 33m
MajorSep 15, 09:48 UTC
Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1lasted 1h 26m
MajorSep 11, 14:19 UTC
Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1lasted 17m
MinorSep 10, 21:43 UTC
Elevated latency on the Claude API for some userslasted 1h 41m
MajorSep 10, 15:54 UTC
Degraded functionality for Claude Cowork on Windowslasted 4d 3h
MajorSep 3, 13:26 UTC
Elevated errors for multiple modelslasted 2h 57m
MajorSep 3, 12:37 UTC
Elevated errors for Claude Sonnet 5lasted 19m
MajorSep 2, 21:17 UTC
Elevated errors for Claude Sonnet 5lasted 26m
MinorSep 1, 23:26 UTC
Delays in credit purchaseslasted 1h 58m
MinorSep 1, 17:05 UTC
Degraded performance on platform.claude.com and Claude for Microsoft Office 365lasted 1h 2m
MinorSep 1, 16:02 UTC
Degraded performance on Claude for Microsoft Office 365lasted 20m
MinorAug 31, 19:21 UTC
Degraded performance on claude.ai and Claude Codelasted 1h 14m
MinorAug 31, 17:23 UTC
Degraded performance on claude.ailasted 29m
MajorAug 28, 17:22 UTC
Elevated errors on Claude Code and Claude Coworklasted 2h 59m
MinorAug 24, 20:11 UTC
Issues logging into Claude.ailasted 15m
MinorAug 24, 17:12 UTC
Errors logging into Claude.ailasted 3m
MajorAug 24, 05:06 UTC
Elevated errors for multiple modelslasted 3h 24m
MajorAug 20, 19:16 UTC
Elevated errors on requests to multiple modelslasted 26m
MinorAug 20, 18:32 UTC
Elevated errors on Google connectorslasted 29m
MinorAug 19, 09:42 UTC
Degraded performance for Claude Opus 5 and Claude Haiku 4.5lasted 1h 20m
About Anthropic

Anthropic, PBC is an American artificial intelligence (AI) public benefit corporation headquartered in San Francisco, California. Its flagship product is Claude, a series of proprietary large language models (LLMs).

The last year, day by day

No incident Minor Major CriticalDeeper colour: longer outage

Downtime, added up

AI median
2d 6h

Anthropic: 2d 6h weighted downtime in range, category median 49m.

49 incidents, 26 major or critical, 12d 19h of incident time (11d 10h major or critical, 33h 9m partial), longest 6d 4h, implied uptime 97.5%, between Aug 12, 2026 and Nov 9, 2026.

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Questions

Is Anthropic down right now?

Check Anthropic's own status page at https://status.claude.com for the live state. This page shows Anthropic's incident history from that page; the most recent incident started 2026-11-08: "Degraded performance for Claude Fable 5.1".

How often does Anthropic have outages?

Anthropic posted 49 incidents in the last 90 days and 400 in the last year, 26 of them major or critical in the last 90 days. The median incident lasted 1h 2m.

When was Anthropic's last major outage?

2026-10-27: "Elevated errors for Claude Sonnet 5.5", lasting 41m.

What usually causes Anthropic incidents?

Anthropic's status updates in this period do not name a root cause.