EU endpoint session failures on Universal 3.5 Pro Realtime
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.
The latest update from AssemblyAI.
State
Resolved
Started
74 d ago
2026-08-19 13:17 UTC
Lasted
7 min
until 2026-08-19 13:24 UTC
Worst impact
Partial outage
Timeline
5 updatesInvestigating
1 min 3%
Identified
1 min 17%
Monitoring
6 min 80%
Updates
Times in UTCAs posted by AssemblyAI
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.
We are continuing to monitor for any further issues.
A fix has been implemented and our team is monitoring the results. Users can now create new realtime sessions successfully.
The issue has been identified and a fix is being implemented.
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.
Affected components
2AssemblyAI in the last 90 days
Full historyIncidents in 90 days
13
Days with an incident
10
Median duration
31 min
This incident
76% shorter than the median
Other AssemblyAI incidents
All incidentsAssemblyAI·Real-time STT: 502 errors related to change to temporary tokens
We have continued to see good performance after the rollback and are now marking this issue as resolved.
AssemblyAI·Increased Processing Times and Errors on EU Endpoint for Universal-3 Pro Async model
This incident has been resolved. Between approximately 15:05 and 15:45 UTC, async transcription requests using Universal-3 Pro on our EU endpoint took longer than usual to complete, and some requests failed. Processing times have returned to normal ranges and any requests that failed during this window can be safely resubmitted.
AssemblyAI·Increased Processing Times and Errors on US Endpoint for Universal-3.5 Pro Async model
This incident has been resolved. Between approximately 1:35p and 2:20p UTC, async transcription requests using Universal-3.5 Pro on our US endpoint took longer than usual to complete, and some requests failed. Processing times have returned to normal ranges and any requests that failed during this window can be safely resubmitted.
AssemblyAI·Rejected Sessions on US Endpoint for Universal-3.6 Pro Realtime Model
From 10:30a - 12:30a UTC users experienced rejected connections when connecting to our Realtime Universal-3.6 Pro model on our US endpoint. Users received a 3005 Session Cancelled error message on connection. This issue has been resolved and the Realtime US endpoint for Universal-3.6 Pro is functioning normally. The EU Realtime endpoint was not affected.
AssemblyAI·Increased processing times and errors for Universal-3.5 Pro on the EU async endpoint
This incident has been resolved. Between approximately 08:20 and 10:45 UTC, asynchronous transcription requests using Universal-3 Pro and Universal-3.5 Pro on our EU endpoint took longer than usual to complete, and some requests failed. Processing times have returned to normal ranges. Any requests that failed during this window can be safely resubmitted.
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