Claude Haiku 4.5 incident resolved after service degradation

An incident affecting Claude Haiku 4.5 occurred on June 10, 2026, starting with investigation at 13:06 UTC and resolving by 17:21 UTC. The issue was identified, fixed, and monitored, with success rates recovering to normal levels. No further action needed.

Jun 10, 2026

At a glance

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Affected

Anthropic · claude-haiku-4.5

Incident

Cost impact

Low · 0/5

Estimated from pricing and window changes

Migration pressure

Low · 0/5

No explicit deadline yet

Next step

Keep monitoring the official rollout

Do this first, then review field-level details

Impact summary

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Cost

Low

Score 0/50%

Quality

Low

Score 0/50%

Migration

Low

Score 0/50%

Reliability

Medium

Score 3/560%

Compliance

Low

Score 0/50%

Service degradation lasted approximately 4 hours; reliability was affected during that window but has been restored.

Changes

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Before

Wed, 10 Jun 2026 16:20:48 +0000
<p> <small>Jun <var data-var=&apos;date&apos;>10</var>, <var data-var=&apos;time&apos;>16:20</var> UTC</small><br> <strong>Monitoring</strong> - A fix has been implemented and we are monitoring the results. </p> <p> <small>Jun <var data-var=&apos;date&apos;>10</var>, <var data-var=&apos;time&apos;>14:59</var> UTC</small><br> <strong>Update</strong> - We are continuing to work on a fix for this issue. </p> <p> <small>Jun <var data-var=&apos;date&apos;>10</var>, <var data-var=&apos;time&apos;>13:19</var> UTC</small><br> <strong>Identified</strong> - The issue has been identified and a fix is being implemented. </p> <p> <small>Jun <var data-var=&apos;date&apos;>10</var>, <var data-var=&apos;time&apos;>13:06</var> UTC</small><br> <strong>Investigating</strong> - We are currently investigating this issue. </p>
Wed, 10 Jun 2026 16:20:48 +0000

After

Wed, 10 Jun 2026 17:21:33 +0000
<p> <small>Jun <var data-var=&apos;date&apos;>10</var>, <var data-var=&apos;time&apos;>17:21</var> UTC</small><br> <strong>Resolved</strong> - This incident has been resolved. </p> <p> <small>Jun <var data-var=&apos;date&apos;>10</var>, <var data-var=&apos;time&apos;>17:13</var> UTC</small><br> <strong>Update</strong> - We are continuing to monitor Claude Haiku 4.5 towards full recovery, and at this point have seen success rates recover to close to normal operating levels. We are working to ensure there are no further issues. </p> <p> <small>Jun <var data-var=&apos;date&apos;>10</var>, <var data-var=&apos;time&apos;>16:20</var> UTC</small><br> <strong>Monitoring</strong> - A fix has been implemented and we are monitoring the results. </p> <p> <small>Jun <var data-var=&apos;date&apos;>10</var>, <var data-var=&apos;time&apos;>14:59</var> UTC</small><br> <strong>Update</strong> - We are continuing to work on a fix for this issue. </p> <p> <small>Jun <var data-var=&apos;date&apos;>10</var>, <var data-var=&apos;time&apos;>13:19</var> UTC</small><br> <strong>Identified</strong> - The issue has been identified and a fix is being implemented. </p> <p> <small>Jun <var data-var=&apos;date&apos;>10</var>, <var data-var=&apos;time&apos;>13:06</var> UTC</small><br> <strong>Investigating</strong> - We are currently investigating this issue. </p>
Wed, 10 Jun 2026 17:21:33 +0000

Sources

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status

Anthropic Status History

Wed, 10 Jun 2026 17:21:33 +0000

Open

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