Overview
- Down Detector logged over 5,000 user reports of API 500 errors around 1:20 p.m. ET, which fell to roughly 2,500 by 1:40 p.m.
- Anthropic’s status page labeled the event a partial outage and said the Desktop app issue was fixed shortly before noon ET.
- The company acknowledged ongoing elevated errors affecting Claude Sonnet 4.6 and Opus 4.6 during the incident.
- Forbes reported successful access to Claude chat by 1:45 p.m. ET, indicating functionality had returned for some users.
- The outage added to a string of recent reliability blips tied to new model rollouts, including issues earlier this month that were followed by a software stock selloff.