Sep <var data-var='date'>15</var>, <var data-var='time'>11:14</var> UTC Resolved - A fix has been deployed for Claude Mythos 5.1 and Claude Fable 5.1 and we are monitoring to ensure it has resolved the issue. Sep <var data-var='date'>15</var>, <var data-var='time'>10:50</var> UTC Monitoring - A fix has been deployed for Claude Mythos 5.1 and Claude Fable 5.1 and we are monitoring to ensure it has resolved the issue. Sep <var data-var='date'>15</var>, <var data-var='time'>09:52</var> UTC Update - We are investigating elevated errors on requests to Claude Mythos 5.1 and Claude Fable 5.1. We will provide an update as soon as possible. Sep <var data-var='date'>15</var>, <var data-var='time'>09:48</var> UTC Investigating - We are investigating elevated errors on requests to Claude Mythos 5.1 and Claude Fable 5.1. We will provide an update as soon as possible.

Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1

Sep <var data-var='date'>14</var>, <var data-var='time'>19:14</var> UTC Resolved - This issue has been resolved. Microsoft has released a September 14 Windows update that fixes it: https://support.microsoft.com/en-us/servicing/os/windows-11/2026/09/kb5129195-windows-11-24h2-25h2-security-update Sep <var data-var='date'>10</var>, <var data-var='time'>15:54</var> UTC Identified - A Windows update released September 8 has left Claude Cowork on Windows unable to run local commands, because its workspace can no longer reach your computer's drive. For most users, chat and file reading and editing still work. There's no in-app workaround yet, and restarting or reinstalling won't help. Microsoft has developed a fix and is working to release it. We'll post an update when we have more to share.

Degraded functionality for Claude Cowork on Windows

Sep <var data-var='date'>11</var>, <var data-var='time'>14:37</var> UTC Resolved - The issue affecting Claude services has been resolved. Impact occurred from 13:57 to 14:20 UTC Sep <var data-var='date'>11</var>, <var data-var='time'>14:28</var> UTC Update - A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery. Sep <var data-var='date'>11</var>, <var data-var='time'>14:28</var> UTC Monitoring - A fix has been deployed for Claude Mythos 5.1 and Claude Fable 5.1 and we are monitoring for recovery. Sep <var data-var='date'>11</var>, <var data-var='time'>14:21</var> UTC Identified - We have identified the cause of elevated errors on requests to Claude Mythos 5.1 and Claude Fable 5.1 and are working on a fix. We will provide an update as soon as possible. Sep <var data-var='date'>11</var>, <var data-var='time'>14:19</var> UTC Investigating - We are investigating elevated errors on requests to Claude Fable 5.1 and Claude Mythos 5.1. We will provide an update as soon as possible.

Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1

Sep <var data-var='date'>10</var>, <var data-var='time'>23:24</var> UTC Resolved - The issue affecting Claude services has been mitigated. Sep <var data-var='date'>10</var>, <var data-var='time'>21:43</var> UTC Identified - We are experiencing slower than normal response times on the Claude API for some customers whose traffic enters through the US Midwest. Users may experience elevated latency and some request timeouts.

Elevated latency on the Claude API for some users

Sep <var data-var='date'> 3</var>, <var data-var='time'>16:23</var> UTC Resolved - The issue affecting Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 has been resolved. Impact has ended as of 9:16 PT / 16:16 UTC. Sep <var data-var='date'> 3</var>, <var data-var='time'>16:06</var> UTC Monitoring - A fix has been deployed for Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 and we are monitoring for recovery. Sep <var data-var='date'> 3</var>, <var data-var='time'>15:25</var> UTC Update - The only affected models right now are Opus 4.8 and Opus 5. The rest of the models have recovered to baseline error rate. Sep <var data-var='date'> 3</var>, <var data-var='time'>14:49</var> UTC Update - We are continuing to work on a fix for this issue. Sep <var data-var='date'> 3</var>, <var data-var='time'>13:50</var> UTC Update - An exhaustive list of affected models: Mythos/Fable 5.1, Mythos/Fable 5, Opus 5, Opus 4.8, Opus 4.6. Sep <var data-var='date'> 3</var>, <var data-var='time'>13:41</var> UTC Identified - We have identified the cause of elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 and are working on a fix. We will provide an update as soon as possible. Sep <var data-var='date'> 3</var>, <var data-var='time'>13:26</var> UTC Investigating - We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5. We will provide an update as soon as possible.

Elevated errors for multiple models

Sep <var data-var='date'> 3</var>, <var data-var='time'>12:56</var> UTC Resolved - This incident has been resolved. Sep <var data-var='date'> 3</var>, <var data-var='time'>12:47</var> UTC Monitoring - A fix has been implemented and we are monitoring the results. Sep <var data-var='date'> 3</var>, <var data-var='time'>12:37</var> UTC Investigating - We are investigating elevated errors on requests to Claude Sonnet 5. We will provide an update as soon as possible.

Elevated errors for Claude Sonnet 5

Sep <var data-var='date'> 2</var>, <var data-var='time'>21:44</var> UTC Resolved - The issue affecting Claude Sonnet 5 has been resolved. Impact occurred from 2:05pm PT / 21:05 UTC to 2:19pm PT / 21:19 UTC. Sep <var data-var='date'> 2</var>, <var data-var='time'>21:17</var> UTC Investigating - We are investigating elevated errors on requests to Claude Sonnet 5. We will provide an update as soon as possible.

Sep <var data-var='date'> 2</var>, <var data-var='time'>01:24</var> UTC Resolved - This issue has been resolved. Sep <var data-var='date'> 1</var>, <var data-var='time'>23:26</var> UTC Monitoring - We have identified and resolved an issue where users who reached a balance of zero usage credits saw delays in the availability of newly purchased credits, resulting in some requests to the Claude API receiving 'credit balance is too low' errors erroneously. This affected credits purchased from 05:10am PT / 12:10 UTC to 2:35pm PT / 21:35 UTC. At this time, newly purchased credits should be available as expected and we are working to resolve any remaining impact.

Delays in credit purchases

Sep <var data-var='date'> 1</var>, <var data-var='time'>18:07</var> UTC Resolved - This issue has been resolved. Sep <var data-var='date'> 1</var>, <var data-var='time'>17:52</var> UTC Monitoring - We are seeing success rates recover across affected services. Core inference and the API are not impacted. Sep <var data-var='date'> 1</var>, <var data-var='time'>17:05</var> UTC Investigating - We are investigating reports of degraded performance affecting some Claude services, including docs.claude.com. We are working to resolve these issues and will provide an update as soon as possible.

Degraded performance on platform.claude.com and Claude for Microsoft Office 365

Sep <var data-var='date'> 1</var>, <var data-var='time'>16:22</var> UTC Resolved - This issue has been resolved. Sep <var data-var='date'> 1</var>, <var data-var='time'>16:02</var> UTC Investigating - We are investigating elevated errors affecting Claude for Microsoft Office 365. We will provide an update as soon as possible.

Degraded performance on Claude for Microsoft Office 365

Aug <var data-var='date'>31</var>, <var data-var='time'>20:36</var> UTC Resolved - The issue affecting Claude Code has been resolved. Impact occurred from 16∶55 to 19∶16 UTC. Aug <var data-var='date'>31</var>, <var data-var='time'>19:21</var> UTC Investigating - We are investigating reports of degraded performance affecting Claude in Slack, Claude Code on the web, and Code Review. We will provide an update as soon as possible.

Degraded performance on claude.ai and Claude Code

Aug <var data-var='date'>31</var>, <var data-var='time'>17:52</var> UTC Resolved - This issue has been resolved. Aug <var data-var='date'>31</var>, <var data-var='time'>17:32</var> UTC Monitoring - We have seen success rates return to normal for requests on Claude.ai and are monitoring closely. Aug <var data-var='date'>31</var>, <var data-var='time'>17:23</var> UTC Investigating - We are investigating reports of elevated errors affecting chats on claude.ai. We will provide an update as soon as possible.

Degraded performance on claude.ai

Aug <var data-var='date'>28</var>, <var data-var='time'>20:21</var> UTC Resolved - The issue affecting Claude Cowork and Claude Code on the web has been resolved. Aug <var data-var='date'>28</var>, <var data-var='time'>18:21</var> UTC Monitoring - A mitigation has been applied for the issue affecting Claude Cowork and Claude Code on the web, and we are monitoring for recovery. Sessions that disconnected earlier can be retried Aug <var data-var='date'>28</var>, <var data-var='time'>17:22</var> UTC Identified - We have identified an issue with an upstream cloud provider affecting Claude Cowork and Claude Code on the web. Some sessions may fail to start or disconnect mid-task; affected sessions can be retried. We are in contact with the provider and will provide an update as soon as possible.

Elevated errors on Claude Code and Claude Cowork

Aug <var data-var='date'>24</var>, <var data-var='time'>20:26</var> UTC Resolved - This issue has been resolved. Aug <var data-var='date'>24</var>, <var data-var='time'>20:11</var> UTC Monitoring - We have identified and resolved an issue which resulted in errors when attempting to access Claude.ai, including logging in via subscriptions for Claude Code. Errors occurred between 1:00pm (20:00 UTC) through 1:08pm PT (20:08 UTC). We are monitoring closely to ensure no further issues.

Issues logging into Claude.ai

Aug <var data-var='date'>24</var>, <var data-var='time'>17:16</var> UTC Resolved - This issue has been resolved. Aug <var data-var='date'>24</var>, <var data-var='time'>17:12</var> UTC Investigating - From 9:02–9:08am PT / 16:02–16:08 UTC) users experienced issues when logging into Claude.ai, including for connecting Claude Code with subscription. At this time, this issue has been resolved, but we are continuing to investigate a potential issue impacting users of the Claude.ai desktop application.

Errors logging into Claude.ai

Aug <var data-var='date'>24</var>, <var data-var='time'>08:30</var> UTC Resolved - This issue has been resolved. From 9:50pm PT / 04:50 UTC through 00:36am PT / 07:36 UTC, users saw elevated errors on requests to Claude models, including Claude Opus 5 and Fable 5. Aug <var data-var='date'>24</var>, <var data-var='time'>07:47</var> UTC Update - At this time, we have seen errors stabilize on Opus 5 and Fable 5, and are working to fully resolve success rates on all affected models. We will provide an update as soon as possible. Aug <var data-var='date'>24</var>, <var data-var='time'>06:42</var> UTC Update - We are continuing to work to resolve issues causing elevated requests on multiple models. We will provide an update as soon as possible. Aug <var data-var='date'>24</var>, <var data-var='time'>05:27</var> UTC Identified - We have identified the cause of elevated errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, and other Claude models and are working on a fix. We will provide an update as soon as possible. Aug <var data-var='date'>24</var>, <var data-var='time'>05:06</var> UTC Investigating - We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, and Claude Opus 4.8. We will provide an update as soon as possible.

Aug <var data-var='date'>20</var>, <var data-var='time'>19:42</var> UTC Resolved - This issue has been resolved. Aug <var data-var='date'>20</var>, <var data-var='time'>19:16</var> UTC Investigating - We are investigating elevated errors on requests to some Claude models. We will provide additional updates as soon as possible.

Elevated errors on requests to multiple models

Aug <var data-var='date'>20</var>, <var data-var='time'>19:01</var> UTC Resolved - This issue has been resolved. Aug <var data-var='date'>20</var>, <var data-var='time'>18:32</var> UTC Investigating - We are investigating elevated errors affecting Google connectors (Sheets, Docs, Slides, and Chat) and custom Google integrations on Claude.ai. Core functionality is not affected. We will provide an update as soon as possible.

Elevated errors on Google connectors

Aug <var data-var='date'>19</var>, <var data-var='time'>11:02</var> UTC Resolved - This incident has been resolved. Aug <var data-var='date'>19</var>, <var data-var='time'>10:33</var> UTC Monitoring - A fix has been implemented and we are monitoring the results. Aug <var data-var='date'>19</var>, <var data-var='time'>09:42</var> UTC Identified - We have identified the cause of elevated errors on requests to Claude Opus 5 and Claude Haiku 4.5 and are working on a fix. We will provide an update as soon as possible.

Degraded performance for Claude Opus 5 and Claude Haiku 4.5

Aug <var data-var='date'>18</var>, <var data-var='time'>19:01</var> UTC Resolved - The issue affecting Claude Opus 5 has been resolved. Impact occurred from 16:11 to 18:23 UTC. Aug <var data-var='date'>18</var>, <var data-var='time'>18:26</var> UTC Monitoring - A fix has been implemented and we are monitoring the results. Aug <var data-var='date'>18</var>, <var data-var='time'>17:12</var> UTC Update - We are investigating elevated errors on requests to Claude Opus 5. We will provide an update as soon as possible. Aug <var data-var='date'>18</var>, <var data-var='time'>16:20</var> UTC Update - We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, Claude Sonnet 5, Claude Haiku 4.5, and other Claude models. We will provide an update as soon as possible. Aug <var data-var='date'>18</var>, <var data-var='time'>16:20</var> UTC Investigating - We are investigating reports of degraded performance affecting multiple models. We will provide an update as soon as possible.

Degraded performance for multiple models

Aug <var data-var='date'>17</var>, <var data-var='time'>15:29</var> UTC Resolved - This incident has been resolved. Aug <var data-var='date'>17</var>, <var data-var='time'>14:39</var> UTC Monitoring - A fix has been implemented and we are monitoring the results. Aug <var data-var='date'>17</var>, <var data-var='time'>14:25</var> UTC Update - Claude Opus 5 is operational. Claude Sonnet 5 is degraded. We are investigating. Aug <var data-var='date'>17</var>, <var data-var='time'>13:56</var> UTC Investigating - We are investigating elevated errors on requests to Claude Opus 5. We will provide an update as soon as possible.

Degraded performance for Claude Opus 5, Claude Sonnet 5

Aug <var data-var='date'>16</var>, <var data-var='time'>22:34</var> UTC Resolved - The issue affecting claude.ai, platform.claude.com, the Claude API, Claude Code, and Claude Cowork has been resolved. Aug <var data-var='date'>16</var>, <var data-var='time'>22:22</var> UTC Monitoring - A fix has been deployed for the issue affecting claude.ai, platform.claude.com, the Claude API, Claude Code, and Claude Cowork and we are monitoring for recovery. Aug <var data-var='date'>16</var>, <var data-var='time'>22:02</var> UTC Update - We are investigating reports of degraded performance affecting claude.ai, platform.claude.com, the Claude API, Claude Code, and Claude Cowork. We will provide an update as soon as possible. Aug <var data-var='date'>16</var>, <var data-var='time'>21:58</var> UTC Investigating - We are investigating an issue with users authenticating to claude.ai, Claude Code, and Claude Cowork. We will provide an update as soon as possible.

Service disruption on Claude services

Aug <var data-var='date'>15</var>, <var data-var='time'>00:27</var> UTC Resolved - The issue affecting Claude services has been resolved. Impact occurred from 20:00 Aug 14, 2026 to 00:11 Aug 15 , 2026 UTC. Aug <var data-var='date'>15</var>, <var data-var='time'>00:21</var> UTC Update - We have identified the cause of the issue affecting Claude services and are working on a fix. We will provide an update as soon as possible. Aug <var data-var='date'>15</var>, <var data-var='time'>00:20</var> UTC Update - We have identified the cause of the issue affecting claude.ai and are working on a fix. We will provide an update as soon as possible. Aug <var data-var='date'>14</var>, <var data-var='time'>23:57</var> UTC Identified - We have identified the cause of elevated errors on requests to Claude Fable 5 and are working on a fix. We will provide an update as soon as possible.

Elevated errors for Claude Fable 5

Aug <var data-var='date'>14</var>, <var data-var='time'>21:58</var> UTC Resolved - The issue affecting the Claude API, Claude Code, and Claude Cowork has been resolved. Impact occurred from 20:14 to 20:38 UTC. Aug <var data-var='date'>14</var>, <var data-var='time'>20:44</var> UTC Monitoring - A fix has been deployed for the issue affecting the Claude API, Claude Code, and Claude Cowork and we are monitoring for recovery. Aug <var data-var='date'>14</var>, <var data-var='time'>20:44</var> UTC Identified - We have identified the cause of the issue affecting the Claude API, Claude Code, and Claude Cowork and are working on a fix. We will provide an update as soon as possible. Aug <var data-var='date'>14</var>, <var data-var='time'>20:30</var> UTC Investigating - We are investigating reports of degraded performance affecting the Claude API, Claude Code, and Claude Cowork. We will provide an update as soon as possible.

Aug <var data-var='date'>14</var>, <var data-var='time'>10:53</var> UTC Resolved - The issue resulting in users being unable to reach status.claude.com has been resolved. Aug <var data-var='date'>14</var>, <var data-var='time'>07:58</var> UTC Investigating - We are aware of issues with reaching status.claude.com, specifically regarding an invalid certificate issues. We are working to resolve these issues as soon as possible.

Is Anthropic down?

Anthropic status is UP

Lastest published events

Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1

Degraded functionality for Claude Cowork on Windows

Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1

Anthropic Services, Components and Regions

Recent Anthropic events

Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1

Degraded functionality for Claude Cowork on Windows

Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1

Elevated latency on the Claude API for some users

Elevated errors for multiple models

Elevated errors for Claude Sonnet 5