Claude (Anthropic) · 60d ago
Elevated errors on Claude Opus 5 and Haiku 4.5
ResolvedYes — Claude had a problem on July 27, 2026, and Claude (Anthropic) has since marked it resolved. Claude (Anthropic)'s latest word: “As of 7:34 PST / 14:34 UTC the errors have returned to baseline.”
Timeline
Started: 7/27/2026, 1:39:52 PM
Last update: 8/14/2026, 10:28:23 AM
Resolved: 7/27/2026, 2:36:43 PM
Affected: rwppv331jlwc, k8w3r06qmzrp, yyzkbfz2thpt, bpp5gb3hpjcl
Updates
resolved
As of 7:34 PST / 14:34 UTC the errors have returned to baseline.
7/27/2026, 2:36:43 PM
investigating
Haiku 4.5 is also returning errors.
7/27/2026, 2:04:20 PM
investigating
We are currently investigating this issue.
7/27/2026, 1:42:00 PM
investigating
We are continuing to investigate this issue.
7/27/2026, 1:41:01 PM
investigating
We are currently investigating this issue.
7/27/2026, 1:39:52 PM
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