Anthropic reports degraded performance on multiple models

Anthropic is investigating elevated errors affecting multiple models as of Aug 12, 2025. This is a new incident, while a previous July 30 incident has been resolved. Users may experience increased latency or failures.

Aug 12, 2026Views:0

Impact Assessment

Cost0

Reliability4

Migration0

Quality1

Compliance0

Ongoing incident may cause request failures or timeouts; no pricing or contractual changes noted.

Changes

Before

Elevated errors across many models | https://status.claude.com/incidents/fsh2zzzl2c4l | &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;30&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;10:48&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;Jul &lt;var data-var=&apos;date&apos;&gt;30&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;10:23&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Update&lt;/strong&gt; - We are also investigating issues with Opus 4.7 and Opus 4.5. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;30&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;10:03&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Monitoring&lt;/strong&gt; - As of 2:58 PT / 9:58 UTC the errors are back to baseline. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;30&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;08:33&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Update&lt;/strong&gt; - As of 01:33 PT / 08:33 UTC we are back to errors across all models. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;30&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;08:06&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Update&lt;/strong&gt; - As of 8:05 UTC / 1:05 PT, Sonnet 5 errors are back to baseline, but we&apos;re seeing an increased error rate on Fable 5. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;30&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;07:33&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Update&lt;/strong&gt; - As of 7:32 UTC / 0:32 PT, Opus 5 errors are back to baseline but we&apos;re seeing again Sonnet 5&apos;s errors up. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;30&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;06:26&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Identified&lt;/strong&gt; - All models except Opus 5 have recovered. We&apos;re working to recover Opus 5 as well. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;30&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;05:57&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 multiple models | https://status.claude.com/incidents/rk6gkg2gwfny | &lt;p&gt; &lt;small&gt;Aug &lt;var data-var=&apos;date&apos;&gt;12&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;13:50&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Investigating&lt;/strong&gt; - We are investigating elevated errors on requests to multiple models. We will provide an update as soon as possible. &lt;/p&gt;

Sources

status

Anthropic Status History

Degraded performance for multiple models | https://status.claude.com/incidents/rk6gkg2gwfny | <p> <small>Aug <var data-var='date'>12</var>, <var data-var='...

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