Increased latency for Universal 3.5 Pro Realtime model
This incident has been resolved. From 14:15-14:45 UTC customers experienced increased latency when using our Universal 3.5 Pro Realtime model on the US endpoint. The EU endpoint was not affected. Sessions continued to function during this time without any errors.
The latest update from AssemblyAI.
State
Resolved
Started
68 d ago
2026-08-25 14:55 UTC
Lasted
6 min
until 2026-08-25 15:01 UTC
Worst impact
Degraded
Timeline
4 updatesInvestigating
2 min 35%
Identified
1 min 6%
Monitoring
4 min 59%
Updates
Times in UTCAs posted by AssemblyAI
This incident has been resolved. From 14:15-14:45 UTC customers experienced increased latency when using our Universal 3.5 Pro Realtime model on the US endpoint. The EU endpoint was not affected. Sessions continued to function during this time without any errors.
The fix has been implemented and latency has recovered as of 14:45 UTC. The team is continuing to monitor the situation.
The issue has been identified and our team is working on a fix.
We are currently investigating an issue where there is increased latency for our Universal 3.5 Pro Realtime model on the US endpoint. This began at 14:15 UTC.
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
80% 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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