Outage in Anthropic
Elevated errors across many models
Resolved MinorIncident Report
Summary AI Generated
Anthropic experienced elevated error rates across claude.ai and api.anthropic.com for approximately 2.1 hours on June 16, 2026. During the first phase, all Sonnet and Opus models saw ~10% error rates; the second phase saw Opus 4.8 continue at ~10% errors after a partial fix was applied. The incident was fully resolved by 12:20 PT following a second fix.
We are currently investigating this issue.
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Latest Updates ( sorted recent to last )
RESOLVED
about 7 hours ago - at 06/16/2026 07:32PM
The incident has now been resolved. We had two phases:
* between 10:23 PT / 17:23 UTC to 11:00 PT / 18:00 UTC -- all Sonnet and Opus models were affected, reaching an error rate of around 10%
* after 11:00 PT / 18:00 UTC and until 12:20 PT / 19:20 UTC -- Opus 4.8 had an average error rate of 10%
The incident is now resolved.
MONITORING
about 7 hours ago - at 06/16/2026 07:22PM
A fix has been implemented and we are monitoring the results.
IDENTIFIED
about 7 hours ago - at 06/16/2026 07:08PM
We are continuing to work on a fix for this issue.
IDENTIFIED
about 7 hours ago - at 06/16/2026 07:00PM
We are continuing to work to resolve an elevated rate of errors on requests to Claude Opus 4.8, and will provide an additional update as soon as possible.
IDENTIFIED
about 8 hours ago - at 06/16/2026 06:15PM
We are still seeing errors on Opus 4.8 and Haiku 4.5.
MONITORING
about 8 hours ago - at 06/16/2026 06:00PM
A fix has been implemented and we are monitoring the results.
INVESTIGATING
about 9 hours ago - at 06/16/2026 05:29PM
We are currently investigating this issue.
Latest Anthropic outages
Elevated errors on Claude Sonnet 4.6 and Opus 4.8 - about 1 hour ago
Elevated errors for Claude Opus 4.8 - about 5 hours ago
Opus 4.8 errors - about 6 hours ago
Elevated errors on Claude Opus 4.8 - 2 days ago
Elevated errors on Claude Opus 4.8 - 4 days ago
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