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An ongoing incident affecting Claude Mythos 5, Fable 5, and Opus 5 now also impacts Claude Sonnet 5. Anthropic has identified the cause and is working on a fix, with elevated errors continuing.
Reliability impact is high due to elevated errors across multiple models, now including Sonnet 5. Quality may be indirectly affected if errors lead to degraded responses. No cost, migration, or compliance impact noted.
Degraded performance for Claude Mythos 5, Claude Fable 5, and Claude Opus 5 | https://status.claude.com/incidents/f6gkkq6txl7z | <p> <small>Aug <var data-var='date'> 5</var>, <var data-var='time'>07:05</var> UTC</small><br> <strong>Identified</strong> - We have identified the cause of elevated errors on requests to Claude Mythos 5, Claude Fable 5, and Claude Opus 5 and are working on a fix. We will provide an update as soon as possible. </p>
Degraded performance of multiple models | https://status.claude.com/incidents/f6gkkq6txl7z | <p> <small>Aug <var data-var='date'> 5</var>, <var data-var='time'>09:13</var> UTC</small><br> <strong>Update</strong> - We are continuing to work on a fix for this issue. </p> <p> <small>Aug <var data-var='date'> 5</var>, <var data-var='time'>07:05</var> UTC</small><br> <strong>Identified</strong> - We have identified the cause of elevated errors on requests to Claude Mythos 5, Claude Fable 5, and Claude Opus 5, Claude Sonnet 5 and are working on a fix. We will provide an update as soon as possible. </p>
Degraded performance of multiple models | https://status.claude.com/incidents/f6gkkq6txl7z | <p> <small>Aug <var data-var='date'> 5</var>, <var data-var='t...
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