Claude incidents resolved after degraded performance

Anthropic resolved two incidents on Aug 5: degraded performance for Claude Opus 5 and multiple models (Mythos 5, Fable 5, Opus 5, Sonnet 5). Both marked resolved, with fixes deployed and monitoring complete. No ongoing impact.

Aug 5, 2026Views:0

Impact Assessment

Cost0

Reliability2

Migration0

Quality1

Compliance0

Incidents resolved; temporary elevated errors may have affected reliability and output quality during the window, but no lasting impact.

Changes

Before

Degraded performance of multiple models | https://status.claude.com/incidents/f6gkkq6txl7z | &lt;p&gt; &lt;small&gt;Aug &lt;var data-var=&apos;date&apos;&gt; 5&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;13:08&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Monitoring&lt;/strong&gt; - A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Aug &lt;var data-var=&apos;date&apos;&gt; 5&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;09:13&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Update&lt;/strong&gt; - We are continuing to work on a fix for this issue. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Aug &lt;var data-var=&apos;date&apos;&gt; 5&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;07:05&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Identified&lt;/strong&gt; - We have identified the cause of elevated errors on requests to Claude Mythos 5, Claude Fable 5, and Claude Opus 5, Claude Sonnet 5 and are working on a fix. We will provide an update as soon as possible. &lt;/p&gt;
Elevated errors across all models | https://status.claude.com/incidents/q2kg8n613kr3 | &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;29&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;22:36&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Resolved&lt;/strong&gt; - This issue has been resolved. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;29&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;22:20&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Monitoring&lt;/strong&gt; - From 12:45 PT / 19:45 UTC through to 1:26 PT / 21:26 UTC, we saw elevated rates of errors across Claude models. We have seen recovery in success rates across all models and are monitoring closely to ensure no further issues. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;29&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;21:38&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Update&lt;/strong&gt; - We are continuing to work to fully resolve issues resulting in elevated requests and latency to Claude models. At this time, we are seeing recovery across most models. We will provide an additional update as soon as possible. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;29&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;20:33&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Identified&lt;/strong&gt; - We have identified an issue resulting in elevated errors across multiple models, and are working to resolve this. We will provide an update as soon as possible. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;29&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;19:49&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Investigating&lt;/strong&gt; - We are currently investigating this issue. &lt;/p&gt;

After

Degraded performance for Claude Opus 5 | https://status.claude.com/incidents/mgp99sn4ynd4 | &lt;p&gt; &lt;small&gt;Aug &lt;var data-var=&apos;date&apos;&gt; 5&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;14:34&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Resolved&lt;/strong&gt; - This incident has been resolved. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Aug &lt;var data-var=&apos;date&apos;&gt; 5&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;13:51&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Identified&lt;/strong&gt; - We have identified the cause of elevated errors on requests to Claude Opus 5 and are working on a fix. We will provide an update as soon as possible. &lt;/p&gt;
Degraded performance of multiple models | https://status.claude.com/incidents/f6gkkq6txl7z | &lt;p&gt; &lt;small&gt;Aug &lt;var data-var=&apos;date&apos;&gt; 5&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;14:14&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Resolved&lt;/strong&gt; - This incident has been resolved. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Aug &lt;var data-var=&apos;date&apos;&gt; 5&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;13:08&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Monitoring&lt;/strong&gt; - A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Aug &lt;var data-var=&apos;date&apos;&gt; 5&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;09:13&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Update&lt;/strong&gt; - We are continuing to work on a fix for this issue. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Aug &lt;var data-var=&apos;date&apos;&gt; 5&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;07:05&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Identified&lt;/strong&gt; - We have identified the cause of elevated errors on requests to Claude Mythos 5, Claude Fable 5, and Claude Opus 5, Claude Sonnet 5 and are working on a fix. We will provide an update as soon as possible. &lt;/p&gt;

Sources

status

Anthropic Status History

Degraded performance for Claude Opus 5 | https://status.claude.com/incidents/mgp99sn4ynd4 | <p> <small>Aug <var data-var='date'> 5</var>, <var data-var='ti...

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