Claude Opus 4.8 and Haiku 4.5 incidents resolved

Two incidents affecting Claude Opus 4.8 (elevated errors) and Haiku 4.5 (elevated errors) on July 20 have been resolved. Both were investigated, identified, fixed, and monitored before resolution. A separate billing issue with Fable 5 on Max plans was also addressed.

Jul 20, 2026Views:0

Impact Assessment

Cost0

Reliability2

Migration0

Quality0

Compliance0

Incidents are now resolved. The Fable 5 billing issue was a minor display error, not actual charges. No ongoing impact.

Changes

Before

Elevated errors on Haiku 4.5 | https://status.claude.com/incidents/s39rkbp2xhpd | &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;20&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;15:09&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;20&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;13:20&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;
Elevated errors for Claude Opus 4.8 | https://status.claude.com/incidents/4n0mmv2v41rf | &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;20&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;15:09&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;20&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;14:41&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;
Fable 5 requiring usage credits on Max plans | https://status.claude.com/incidents/tnypgb2jbqnq | &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;20&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;07:35&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Monitoring&lt;/strong&gt; - Some Claude Code Max plan users were incorrectly prompted to use usage credits to access Fable 5, which is included in their plan. If you were affected, please restart Claude Code. &lt;/p&gt;

After

Elevated errors for Claude Opus 4.8 | https://status.claude.com/incidents/4n0mmv2v41rf | &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;20&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;16:16&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;20&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;16:07&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;20&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;15:09&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;20&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;14:41&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;
Elevated errors on Haiku 4.5 | https://status.claude.com/incidents/s39rkbp2xhpd | &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;20&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;15:41&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;20&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;15:33&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;20&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;15:09&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;20&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;13:20&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;
Fable 5 requiring usage credits on Max plans | https://status.claude.com/incidents/tnypgb2jbqnq | &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt;20&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;15:35&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;20&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;07:35&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Monitoring&lt;/strong&gt; - Some Claude Code Max plan users were incorrectly prompted to use usage credits to access Fable 5, which is included in their plan. If you were affected, please restart Claude Code. &lt;/p&gt;

Sources

status

Anthropic Status History

Elevated errors for Claude Opus 4.8 | https://status.claude.com/incidents/4n0mmv2v41rf | <p> <small>Jul <var data-var='date'>20</var>, <var data-var='time&...

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