Anthropic Status - Incident History

Anthropic Status - Incident History https://status.anthropic.com Statuspage Wed, 27 Aug 2025 12:20:45 +0000 Elevated errors on Claude Opus 4.1 <p><small>Aug <var data-var='date'>27</var>, <var data-var='time'>11:29</var> UTC</small><br><strong>Investigating</strong> - We are investigating an issue with Claude Opus 4.1 similar to the one that happened earlier, this time starting with 4:14 PT / 11:14 UTC.</p> Wed, 27 Aug 2025 11:29:19 +0000 https://status.anthropic.com/incidents/83tkklyw5nc9 https://status.anthropic.com/incidents/83tkklyw5nc9 Elevated errors on Claude Opus 4.1 <p><small>Aug <var data-var='date'>27</var>, <var data-var='time'>08:11</var> UTC</small><br><strong>Resolved</strong> - As of 00:46 PT / 7:46 UTC the errors are back to baseline.</p><p><small>Aug <var data-var='date'>27</var>, <var data-var='time'>06:23</var> UTC</small><br><strong>Investigating</strong> - We are investigating an issue with Claude Opus 4.1 that started at 23:08 PT / 6:08 UTC.</p> Wed, 27 Aug 2025 08:11:14 +0000 https://status.anthropic.com/incidents/873tk10bx73n https://status.anthropic.com/incidents/873tk10bx73n Elevated errors on Claude Opus 4.0 <p><small>Aug <var data-var='date'>26</var>, <var data-var='time'>15:03</var> UTC</small><br><strong>Resolved</strong> - We have seen errors return to the baseline level since 7:45 PT / 14:45 UTC.</p><p><small>Aug <var data-var='date'>26</var>, <var data-var='time'>13:53</var> UTC</small><br><strong>Update</strong> - We are continuing to investigate this issue.</p><p><small>Aug <var data-var='date'>26</var>, <var data-var='time'>13:52</var> UTC</small><br><strong>Investigating</strong> - We are currently investigating this issue.</p> Tue, 26 Aug 2025 15:03:20 +0000 https://status.anthropic.com/incidents/0tg57dxvt4rn https://status.anthropic.com/incidents/0tg57dxvt4rn Claude.ai failing to connect to certain MCP servers <p><small>Aug <var data-var='date'>25</var>, <var data-var='time'>20:39</var> UTC</small><br><strong>Resolved</strong>