ModerateAnthropicIncidentclaude-haiku-4.5Verified

Elevated errors on Claude Haiku 4.5 and Fable 5

An incident initially reported for Claude Haiku 4.5 has expanded to include Fable 5. The status page now lists 'Elevated errors on several models' instead of just Haiku 4.5, indicating a broader service degradation.

Jul 6, 2026Views:0

Impact Assessment

Cost0

Reliability3

Migration0

Quality0

Compliance0

Reliability impact is medium as errors are elevated on at least two models (Haiku 4.5 and Fable 5). No cost, migration, quality, or compliance impact identified.

Changes

Before

Elevated errors on Claude Haiku 4.5 | https://status.claude.com/incidents/tl8x3p1msff2 | &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt; 6&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;07:36&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 several models | https://status.claude.com/incidents/tl8x3p1msff2 | &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt; 6&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;08:45&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Identified&lt;/strong&gt; - Fable 5 has now also started returning errors. &lt;/p&gt; &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt; 6&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;07:36&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 Claude Haiku 4.5 and Fable 5

Impact Assessment

Changes

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