ModerateAnthropicIncidentclaude-opus-4Verified

Elevated errors on Claude Opus 4.8 under investigation

Anthropic is investigating elevated errors on Claude Opus 4.8, which may cause increased latency or request failures for users of this model. A previous incident about suspended access to Claude Mythos 5 and Claude Fable 5 has been resolved.

Jul 8, 2026Views:0

Impact Assessment

Cost0

Reliability4

Migration0

Quality2

Compliance0

Elevated errors may degrade reliability for Claude Opus 4.8 users; no pricing or compliance impact. The resolved Mythos/Fable incident is no longer active.

Changes

Before

We’ve suspended access to Claude Mythos 5 and Claude Fable 5 | https://status.claude.com/incidents/s9w82lp9dcn9 | &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt; 1&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;19:26&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Resolved&lt;/strong&gt; - Learn more here: https://anthropic.com/news/redeploying-fable-5 &lt;/p&gt; &lt;p&gt; &lt;small&gt;Jun &lt;var data-var=&apos;date&apos;&gt;13&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;00:50&lt;/var&gt; UTC&lt;/small&gt;&lt;br&gt; &lt;strong&gt;Monitoring&lt;/strong&gt; - Learn more here: https://anthropic.com/news/fable-mythos-access &lt;/p&gt;

After

Elevated errors on Claude Opus 4.8 | https://status.claude.com/incidents/dcxc66flmxbd | &lt;p&gt; &lt;small&gt;Jul &lt;var data-var=&apos;date&apos;&gt; 8&lt;/var&gt;, &lt;var data-var=&apos;time&apos;&gt;18:00&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 Opus 4.8 under investigation

Impact Assessment

Changes

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