How often does Anthropic (Claude) have outages?

Anthropic (Claude) has had 50 reported incidents recently. Visit apistatuscheck.com/incidents/anthropic for the complete outage history with timelines and resolution details.

What was the last Anthropic (Claude) outage?

The most recent Anthropic (Claude) incident was "Elevated error rate on API across all Claude models" on February 3, 2026. It was classified as critical impact and is currently resolved.

Anthropic (Claude) Outage History

50 incidents reported. Data sourced from the official Anthropic (Claude) status page.

Total Incidents

Major/Critical

Minor

Resolved

February 2026

Elevated error rate on API across all Claude models

critical

Feb 3, 03:46 PM→Feb 3, 03:56 PMresolved

Feb 3, 04:07 PM

resolved — This incident has been resolved.

Feb 3, 03:46 PM

identified — The issue has been identified and a fix is being implemented.

Elevated errors on Claude Opus 4.5

minor

Feb 2, 11:15 PM→Feb 2, 11:18 PMresolved

Feb 2, 11:18 PM

resolved — Users experienced errors on Opus 4.5 between 15:09 PT / 23:09 UTC to 15:15 PT / 23:15.

Feb 2, 11:15 PM

investigating — We are currently investigating this issue.

Credit purchase issues & delays

major

Feb 1, 09:59 PM→Feb 2, 02:08 AMresolved

Feb 2, 02:08 AM

resolved — The incident has been resolved

Feb 1, 11:47 PM

monitoring — Purchasing has been confirmed working regularly again, since around 2:30pm Pacific Time. Engineers are monitoring to ensure the system stays healthy.

Feb 1, 11:08 PM

identified — The root cause has been discovered and engineers are working on a fix

+1 more updates

Elevated errors on Claude Sonnet 4.5

minor

Feb 1, 11:47 AM→Feb 1, 12:34 PMresolved

Feb 1, 12:34 PM

resolved — As of 2026-02-01 03:55 PT / 11:55 UTC the errors are back to the baseline.

Feb 1, 11:48 AM

investigating — Start of errors 2026-02-01 03:36 PT / 11:36 UTC.

Feb 1, 11:47 AM

investigating — We are currently investigating this issue.

Elevated errors on Claude Opus 4.5

minor

Feb 1, 10:54 AM→Feb 1, 11:42 AMresolved

Feb 1, 11:42 AM

resolved — The errors have returned to baseline as of 2026-02-01 02:51 / 10:51 UTC.

Feb 1, 10:54 AM

investigating — We are continuing to investigate this issue.

Feb 1, 10:54 AM

investigating — We are investigating an issue with Opus 4.5 that started at 2026-02-01 02:41 PT / 10:41 UTC.

January 2026

Some users are experiencing memory leaks in Claude Code 2.1.27

minor

Jan 31, 08:18 PM→Jan 31, 09:06 PMresolved

Jan 31, 09:06 PM

resolved — This incident has been resolved. Update Claude Code to 2.1.29.

Jan 31, 08:41 PM

monitoring — A fix has been implemented and we are monitoring the results.

Jan 31, 08:18 PM

identified — We have identified the problem and are working on a fix. More details can be found in Github issue #22042.

Some users are experiencing delays in purchasing additional API credits

minor

Jan 29, 07:10 PM→Jan 29, 08:39 PMresolved

Jan 29, 08:39 PM

resolved — During the outage, all of the following were delayed: - customer balances - billing for standard API usage - issuing credit auto-recharge invoices - access shutoff/restore for $0 in credits, and for r...

Jan 29, 07:51 PM

identified — Some customers are experiencing delays in having their successful credit purchases applied and in triggering credit auto-reloads. We have identified the issue and are working to resolve.

Jan 29, 07:10 PM

investigating — We are currently investigating this issue.

Elevated errors on Claude Opus 4.5

minor

Jan 28, 01:52 PM→Jan 28, 02:14 PMresolved

Jan 28, 02:14 PM

resolved — As of 06:12 PT / 14:12 UTC, we have mitigated the issue.

Jan 28, 01:52 PM

investigating — This is a repeat of the incident earlier in the day. Errors have restarted from 05:41 PT / 13:41 UTC.

Jan 28, 01:52 PM

investigating — We are currently investigating this issue.

Elevated errors on Claude Opus 4.5

minor

Jan 28, 11:30 AM→Jan 28, 12:30 PMresolved

Jan 28, 12:30 PM

resolved — As of 03:50 PT / 11:50 UTC we have fully recovered.

Jan 28, 11:47 AM

monitoring — A fix has been implemented and we are monitoring the results.

Jan 28, 11:30 AM

investigating — We are currently investigating this issue.

Elevated errors on Claude Sonnet 3.7

minor

Jan 28, 10:13 AM→Jan 28, 10:36 AMresolved

Jan 28, 10:36 AM

resolved — This incident has been resolved.

Jan 28, 10:13 AM

investigating — We are currently investigating this issue.

Degraded performance on Claude Console

minor

Jan 27, 10:28 PM→Jan 27, 11:07 PMresolved

Jan 27, 11:07 PM

resolved — This incident is resolved.

Jan 27, 10:55 PM

monitoring — A fix has been applied. Request latencies are returning to normal. We will continue to monitor system health

Jan 27, 10:28 PM

investigating — We are currently investigating degraded performance on platform.claude.com.

Elevated errors on Claude Haiku 3.5

minor

Jan 27, 02:23 PM→Jan 27, 02:56 PMresolved

Jan 27, 02:56 PM

resolved — This incident has been resolved.

Jan 27, 02:23 PM

investigating — We are currently investigating this issue.

Increased rate of errors for Opus 4.5

minor

Jan 25, 08:05 AM→Jan 26, 02:32 PMresolved

Jan 26, 02:32 PM

resolved — This incident has been resolved.

Jan 26, 04:53 AM

monitoring — We are continuing to monitor for any further issues.

Jan 25, 09:57 AM

monitoring — A fix has been implemented and we are monitoring the results.

+1 more updates

Elevated errors: Invalid `signature` in `thinking` block

minor

Jan 23, 05:09 AM→Jan 23, 07:47 AMresolved

Jan 23, 07:47 AM

resolved — This issue is resolved for new requests. However, for responses from one platform received between 2026-01-23 00:00 UTC - 2026-01-23 08:00 UTC that are subsequently included in requests sent to a diff...

Jan 23, 07:32 AM

monitoring — A fix has been implemented and we are monitoring the results.

Jan 23, 06:24 AM

identified — We are continuing to work on a fix for this issue.

+4 more updates

Elevated error rates on claude.ai and API

major

Jan 22, 10:19 PM→Jan 22, 10:26 PMresolved

Jan 22, 10:26 PM

resolved — This incident has been resolved.

Jan 22, 10:23 PM

monitoring — We are continuing to monitor for any further issues.

Jan 22, 10:22 PM

monitoring — A fix has been implemented and we are monitoring the results.

+1 more updates

Claude Code Authentication Issues

major

Jan 22, 04:22 PM→Jan 22, 04:49 PMresolved

Jan 22, 04:49 PM

resolved — This incident has been resolved.

Jan 22, 04:49 PM

monitoring — We are continuing to monitor for any further issues.

Jan 22, 04:36 PM

monitoring — A fix has been implemented and we are monitoring the results.

+2 more updates

Elevated errors on claude.ai

major

Jan 22, 04:06 PM→Jan 22, 04:49 PMresolved

Jan 22, 04:49 PM

resolved — This incident has been resolved.

Jan 22, 04:10 PM

investigating — We are continuing to investigate this issue.

Jan 22, 04:06 PM

investigating — We are currently investigating this issue.

Elevated errors on Claude Sonnet 4.5

minor

Jan 21, 02:44 PM→Jan 21, 03:32 PMpostmortem

Jan 21, 03:57 PM

postmortem — On January 21, 2026, from approximately 14:00 to 15:26 UTC, some users experienced increased error rates and slower response times when using Claude Sonnet 4.5 through our API. The issue was caused by...

Jan 21, 03:32 PM

resolved — This incident has been resolved.

Jan 21, 03:28 PM

monitoring — A fix has been implemented and we are monitoring the results.

+2 more updates

Elevated errors on Claude Opus 4.5 and Sonnet 4.5

minor

Jan 20, 04:41 PM→Jan 20, 05:34 PMpostmortem

Jan 20, 06:00 PM

postmortem — On January 20, 2026, between 8:31 AM and 9:29 AM PT, customers experienced elevated error rates when using Claude Sonnet 4.5 and Claude Opus 4.5 models. The issue was caused by a newly enabled feature...

Jan 20, 05:34 PM

resolved — This incident has been resolved.

Jan 20, 05:20 PM

identified — The issue has been identified and a fix is being implemented.

+1 more updates

Compaction is having issues

minor

Jan 15, 07:28 AM→Jan 15, 05:02 PMresolved

Jan 15, 05:02 PM

resolved — This incident has been resolved.

Jan 15, 07:28 AM

identified — The issue has been identified and a fix is being implemented.

Elevated error rates on Opus 4.5 and Sonnet 4.5

critical

Jan 14, 08:34 AM→Jan 14, 02:17 PMpostmortem

Jan 14, 03:43 PM

postmortem — On January 14, 2026, users experienced errors when using Claude Opus 4.5 and Sonnet 4.5 due to a service deployment that temporarily reduced our serving capacity. We identified and rolled back the dep...

Jan 14, 02:17 PM

resolved — This incident has been resolved.

Jan 14, 02:06 PM

monitoring — We are continuing to monitor for any further issues.

+10 more updates

Increased rate of errors for Opus 4.5

minor

Jan 13, 07:27 AM→Jan 13, 07:49 AMpostmortem

Jan 13, 06:57 PM

postmortem — On January 12-13, 2026, Claude Opus 4.5 users experienced elevated error rates and degraded service for approximately 2 hours across two separate incidents. The root cause was a configuration mismatch...

Jan 13, 07:49 AM

resolved — This incident has been resolved.

Jan 13, 07:39 AM

monitoring — A fix has been implemented and we are monitoring the results.

+1 more updates

Elevated rate of errors for multiple models

major

Jan 12, 06:10 PM→Jan 12, 08:14 PMresolved

Jan 12, 08:14 PM

resolved — This incident has been resolved.

Jan 12, 06:39 PM

monitoring — A fix has been implemented and we are monitoring the results.

Jan 12, 06:19 PM

identified — The issue has been identified and a fix is being implemented.

+2 more updates

Increased rate of errors for Opus 4.5

major

Jan 12, 07:21 PM→Jan 12, 08:14 PMresolved

Jan 12, 08:14 PM

resolved — This incident has been resolved.

Jan 12, 08:07 PM

identified — The issue has been identified and a fix is being implemented.

Jan 12, 07:21 PM

investigating — We are currently investigating this issue.

Elevated error rates on Sonnet 4.5 1M context

minor

Jan 10, 02:33 PM→Jan 10, 03:41 PMresolved

Jan 10, 03:41 PM

resolved — This incident has been resolved.

Jan 10, 03:16 PM

monitoring — A fix has been implemented and we are monitoring the results.

Jan 10, 03:00 PM

identified — The issue has been identified and a fix is being implemented.

+2 more updates

Degraded performance for API requests involving structured outputs.

minor

Jan 10, 03:37 AM→Jan 10, 06:38 AMresolved

Jan 10, 06:38 AM

resolved — We've deployed a fix to resolve the issue.

Jan 10, 04:40 AM

identified — This issue has been identified and we're working on a fix.

Jan 10, 03:37 AM

investigating — We are continuing to investigate this issue.

+1 more updates

New Subscription Activation & Payment Issues

minor

Jan 9, 07:41 PM→Jan 10, 04:55 AMresolved

Jan 10, 04:55 AM

resolved — The fix finished deploying approximately 2 hours ago and new purchases should work correctly going forward. We're closing this statuspage for now, and will work to restore access and/or provide refund...

Jan 9, 10:52 PM

identified — We are continuing to work on a fix for this issue.

Jan 9, 07:59 PM

identified — The issue has been identified and a fix should be coming soon for new purchases. After the issue is fixed, we will issue refunds for all users who were incorrectly charged and/or properly grant subscr...

+1 more updates

Increased latency on Sonnet 4.5

minor

Jan 8, 05:23 PM→Jan 8, 09:57 PMresolved

Jan 8, 09:57 PM

resolved — This incident has been resolved.

Jan 8, 05:43 PM

identified — The issue has been identified and a fix is being implemented.

Jan 8, 05:23 PM

investigating — We are currently investigating this issue.

Claude subscription usage limits not visible in Claude.ai and Claude Code

minor

Jan 7, 07:07 PM→Jan 8, 05:06 AMresolved

Jan 8, 05:06 AM

resolved — This incident has been resolved.

Jan 7, 07:20 PM

investigating — We are continuing to investigate this issue.

Jan 7, 07:07 PM

investigating — We are currently investigating this issue.

Elevated error rates on Opus 4.5

minor

Jan 7, 09:09 AM→Jan 7, 10:04 AMresolved

Jan 7, 10:04 AM

resolved — This incident has been resolved.

Jan 7, 09:28 AM

monitoring — A fix has been implemented and we are monitoring the results.

Jan 7, 09:22 AM

identified — The issue has been identified and a fix is being implemented.

+1 more updates

Errors on requests to Haiku 3.5

minor

Jan 6, 12:26 AM→Jan 6, 12:29 AMresolved

Jan 6, 12:29 AM

resolved — This incident has been resolved.

Jan 6, 12:26 AM

investigating — We are currently investigating this issue.

December 2025

Elevated error rates on Opus 4.5

minor

Dec 23, 09:55 AM→Dec 23, 10:51 AMresolved

Dec 23, 10:51 AM

resolved — This incident has been resolved.

Dec 23, 09:55 AM

investigating — We are currently investigating this issue.

Elevated error rates on Opus 4.5

minor

Dec 22, 07:18 AM→Dec 22, 09:32 AMresolved

Dec 22, 09:32 AM

resolved — This incident has been resolved.

Dec 22, 08:40 AM

monitoring — A fix has been implemented and we are monitoring the results.

Dec 22, 07:18 AM

investigating — We are currently investigating this issue.

Elevated error rates on Opus 4.5

minor

Dec 21, 01:16 PM→Dec 21, 02:34 PMresolved

Dec 21, 02:34 PM

resolved — This incident has been resolved.

Dec 21, 01:57 PM

monitoring — A fix has been implemented and we are monitoring the results.

Dec 21, 01:16 PM

identified — The issue has been identified and a fix is being implemented.

Research unavailable for some teams orgs

minor

Dec 20, 12:51 AM→Dec 20, 01:35 AMresolved

Dec 20, 01:35 AM

resolved — This incident has been resolved.

Dec 20, 12:51 AM

investigating — We are currently investigating this issue.

Claude Code on Windows rendering improperly

minor

Dec 19, 08:30 PM→Dec 19, 10:14 PMresolved

Dec 19, 10:14 PM

resolved — This incident has been resolved in Claude Code 2.0.74.

Dec 19, 08:30 PM

identified — The issue has been identified and a fix is being implemented.

Elevated error rates on Sonnet 4.5

minor

Dec 19, 04:34 AM→Dec 19, 01:52 PMresolved

Dec 19, 01:52 PM

resolved — This incident has been resolved.

Dec 19, 07:48 AM

monitoring — A fix has been implemented and we are monitoring the results.

Dec 19, 06:59 AM

identified — The issue has been identified and a fix is being implemented.

+1 more updates

Elevated error rates on Sonnet 4

minor

Dec 17, 10:45 AM→Dec 17, 11:20 AMresolved

Dec 17, 11:20 AM

resolved — This incident has been resolved.

Dec 17, 11:13 AM

monitoring — A fix has been implemented and we are monitoring the results.

Dec 17, 11:09 AM

identified — The issue has been identified and a fix is being implemented.

+2 more updates

New chats defaulting to Claude Opus

major

Dec 16, 07:30 PM→Dec 16, 08:52 PMresolved

Dec 16, 08:52 PM

resolved — This incident has been resolved.

Dec 16, 08:44 PM

monitoring — We are continuing to monitor for any further issues.

Dec 16, 08:44 PM

monitoring — A fix has been implemented and we are monitoring the results.

+2 more updates

Cannot create new conversations on Claude.ai

critical

Dec 16, 04:23 PM→Dec 16, 04:43 PMresolved

Dec 16, 04:43 PM

resolved — This incident has been resolved.

Dec 16, 04:36 PM

monitoring — We are continuing to monitor for any further issues.

Dec 16, 04:36 PM

monitoring — A fix has been implemented and we are monitoring the results.

+1 more updates

Unable to view shared chats on claude.ai

minor

Dec 15, 06:39 PM→Dec 15, 07:29 PMresolved

Dec 15, 07:29 PM

resolved — This incident has been resolved.

Dec 15, 07:24 PM

monitoring — A fix has been implemented and we are monitoring the results.

Dec 15, 07:16 PM

identified — The issue has been identified and a fix is being implemented.

+1 more updates

Elevated errors across many models

critical

Dec 14, 09:31 PM→Dec 14, 10:51 PMpostmortem

Dec 14, 11:40 PM

postmortem — Between 13:25 and 14:43 PT today, Claude Opus 4.5 and Sonnet models experienced degraded availability. A network routing misconfiguration caused traffic to backend infrastructure to be dropped, preven...

Dec 14, 10:51 PM

resolved — As of 14:43 PT / 22:43 UTC we have seen full recovery across all models.

Dec 14, 10:46 PM

identified — The issue has been identified and a fix is being implemented.

+3 more updates

Elevated errors on documentation site in Europe

none

Dec 12, 05:10 PM→Dec 12, 06:59 PMresolved

Dec 12, 06:59 PM

resolved — This incident has been resolved.

Dec 12, 05:10 PM

investigating — We are currently investigating this issue.

Unable to start chats on claude.ai

major

Dec 12, 08:00 AM→Dec 12, 08:00 AMresolved

Dec 12, 08:19 AM

resolved — This incident has been resolved.

iOS Subscription Access Issues

minor

Dec 5, 08:34 PM→Dec 12, 12:04 AMresolved

Dec 12, 12:04 AM

resolved — The issue has been resolved. We are working on compensation for impacted users.

Dec 9, 11:37 PM

monitoring — A fix has been implemented and we are monitoring the results.

Dec 5, 08:34 PM

identified — Due to a bug introduced in Claude iOS app version 1.251117.1 (November 18), some Apple App Store users who purchased Pro and Max plans on or after November 24 did not receive proper access to their pl...

Research on claude.ai down

minor

Dec 10, 07:44 PM→Dec 10, 08:21 PMresolved

Dec 10, 08:21 PM

resolved — This incident has been resolved.

Dec 10, 07:50 PM

identified — The issue has been identified and a fix is being implemented.

Dec 10, 07:44 PM

investigating — We are currently investigating this issue.

Claude.ai is unavailable

major

Dec 5, 10:47 AM→Dec 5, 11:27 AMresolved

Dec 5, 11:27 AM

resolved — This incident has been resolved.

Dec 5, 11:18 AM

monitoring — A fix has been implemented and we are monitoring the results.

Dec 5, 10:49 AM

identified — We have identified the issue and are working on remediating it

+3 more updates

Claude.ai is unavailable

critical

Dec 5, 09:02 AM→Dec 5, 09:33 AMresolved

Dec 5, 09:33 AM

resolved — This incident has been resolved.

Dec 5, 09:18 AM

monitoring — An upstream provider has implemented a fix, we are monitoring the results

Dec 5, 09:02 AM

investigating — We are currently investigating this issue.

Elevated Error Rates on Claude API Code Execution and Advanced File Analysis Tools

none

Dec 5, 01:09 AM→Dec 5, 01:09 AMresolved

Dec 5, 01:09 AM

resolved — From 22:01 UTC to 00:48 UTC, the Code Execution tool on the Claude API and Advanced File Analysis tool on claude.ai experienced elevated error rates. This incident has been resolved.