Claude Opus 5 elevated errors resolved, Opus 4.8/Haiku 4.5 incident removed — ModelPriceLab

Changes/Claude Opus 5 elevated errors resolved, Opus 4.8/Haiku 4.5 incident removed

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Claude Opus 5 elevated errors resolved, Opus 4.8/Haiku 4.5 incident removed

An incident of elevated errors on Claude Opus 5 on July 27 has been resolved. A separate incident for Opus 4.8 and Haiku 4.5 from July 22 has been removed from the status history, indicating it is no longer active or relevant.

Jul 27, 2026Views:0

Impact Assessment

Cost0

Reliability2

Migration0

Quality0

Compliance0

The resolved incident on Opus 5 had a brief period of elevated errors (about 47 minutes) which may have affected reliability for some users. The removal of the older incident suggests it is fully resolved and no longer a concern.

Changes

Before

Elevated errors on Opus 4.8 and Haiku 4.5 | https://status.claude.com/incidents/f7w8qkd8z57f | &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;22&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;15:23&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;22&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;15:06&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Monitoring&lt;/strong&gt; - A fix has been implemented and we are monitoring the results. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;22&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;14:18&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. Haiku 4.5 has recovered &lt;/p&gt; &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;22&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;14:16&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Identified&lt;/strong&gt; - The issue has been identified and a fix is being implemented. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;22&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;13:37&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

Elevated errors on Claude Opus 5 | https://status.claude.com/incidents/lhqp09kxq7pb | &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;27&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;09:05&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Resolved&lt;/strong&gt; - As of 2:03 PST / 9:03 UTC the errors have returned to baseline. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;27&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;08:16&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;

Sources

status

Anthropic Status History

Elevated errors on Claude Opus 5 | https://status.claude.com/incidents/lhqp09kxq7pb | <p> <small>Jul <var data-var='date'>27</var>, <var data-var='time&apo...

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