AssemblyAI incident
Increased processing times and errors for Universal-3.5 Pro on the EU async endpoint
AssemblyAI experienced a major incident on October 5, 2026 affecting Asynchronous API, lasting 1h 18m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Oct 05, 2026, 10:21 AM UTC
We have identified an issue affecting asynchronous transcription requests using Universal-3.5 Pro on our EU endpoint. Most of these requests are currently significantly delayed, and some have failed. Our team is working to restore normal processing. Our US endpoint and real-time services are not affected. We will continue to provide updates as more information becomes available.
- identified Oct 05, 2026, 10:38 AM UTC
We have identified the issue causing longer-than-usual processing times and some failed requests for asynchronous transcription using our Universal-3 Pro and Universal-3.5 Pro models on the EU endpoint. We are working to resolve this as quickly as possible and will provide further updates as soon as we can.
- monitoring Oct 05, 2026, 10:43 AM UTC
We have continued to work to resolve this issue and are now seeing processing times return to the normal ranges, but we are continuing to monitor to ensure good performance.
- resolved Oct 05, 2026, 11:39 AM UTC
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.