EU endpoint session failures on Universal 3.5 Pro Realtime

Incident Report for AssemblyAI

Resolved

This incident has been resolved. From 13:00–13:12 UTC, users creating new streaming sessions using the EU endpoint were receiving a 3005 close code.
Posted Aug 19, 2026 - 13:24 UTC

Update

We are continuing to monitor for any further issues.
Posted Aug 19, 2026 - 13:20 UTC

Monitoring

A fix has been implemented and our team is monitoring the results. Users can now create new realtime sessions successfully.
Posted Aug 19, 2026 - 13:18 UTC

Identified

The issue has been identified and a fix is being implemented.
Posted Aug 19, 2026 - 13:17 UTC

Investigating

We're currently investigating an issue affecting users on our Universal 3.5 Pro Realtime model, where new streaming sessions could not be created on our EU endpoint. This occurred from 13:00–13:12 UTC. Affected users are seeing a 3005 close code. Users on the US endpoint are unaffected.
Posted Aug 19, 2026 - 13:17 UTC
This incident affected: APIs (Streaming API).
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