Elevated errors on requests to multiple models

Incident Report for Anthropic

Resolved

The following models have seen errors below the baseline:
* Claude 3.5 Sonnet since 16:20 UTC
* Claude 4 Sonnet since 15:39 UTC

We are resolving this incident.
Posted Jul 08, 2025 - 16:25 UTC

Investigating

We've seen the following models have issues:

* Claude 3.5 Sonnet from 12:30 UTC
* Claude 3.7 Sonnet between 11:30 UTC and 14:45 UTC
* Claude 4 Sonnet from 14:30 UTC

We are working on mitigating the user impact.
Posted Jul 08, 2025 - 15:20 UTC

Update

We are observing an increase in error rates on multiple older models. A fix has been implemented and we are continuing to monitor.
Posted Jul 08, 2025 - 14:18 UTC

Monitoring

A fix has been implemented and we are monitoring the results.
Posted Jul 08, 2025 - 13:35 UTC

Investigating

We are currently investigating this issue.
Posted Jul 08, 2025 - 13:09 UTC
This incident affected: claude.ai and api.anthropic.com.