Outage in AssemblyAI

Degraded performance for requests using Slam-1

Resolved Minor
October 30, 2025 - Started about 20 hours ago - Lasted about 7 hours
Official incident page

Incident Report

We are currently investigating an issue that is leading to longer-than-usual processing times for pre-recorded audio transcriptions using the Slam-1 model. Requests using the Universal model, which is enabled by default, are not affected by this issue.
Components affected
AssemblyAI Asynchronous API

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Latest Updates ( sorted recent to last )
RESOLVED about 13 hours ago - at 10/31/2025 02:21AM

We have continued to see good performance and success rates for Slam-1 and are now marking this issue as resolved.

MONITORING about 14 hours ago - at 10/31/2025 01:26AM

Success rates and processing times have returned to the normal range, but we are monitoring traffic to ensure continued good performance.

IDENTIFIED about 16 hours ago - at 10/30/2025 11:47PM

We are once again seeing occasional issues where some requests using the Slam-1 model are taking longer than normal to process or failing with a server error. Retries are typically successful and requests using the Universal model are unaffected.

MONITORING about 18 hours ago - at 10/30/2025 09:42PM

We are continuing to see success rates in the normal range and no longer than usual processing times but we will continue to monitor traffic to ensure continued good performance.

IDENTIFIED about 18 hours ago - at 10/30/2025 09:21PM

We are starting to see success rates return to the normal range, but we are still working to ensure that the issue has been fully resolved.

IDENTIFIED about 19 hours ago - at 10/30/2025 08:06PM

We are currently seeing some Slam-1 requests fail with a server error as we are restarting services while working to address this issue. We suggest holding off on retries for the time being or retrying those requests using Universal until normal processing has been restored. We will release another update here as soon as we are seeing an increase in success rates.

IDENTIFIED about 20 hours ago - at 10/30/2025 07:51PM

Our team has identified the issue causing the delay in processing requests using Slam-1 and is actively working to resolve the issue.

INVESTIGATING about 20 hours ago - at 10/30/2025 07:36PM

We are currently investigating an issue that is leading to longer-than-usual processing times for pre-recorded audio transcriptions using the Slam-1 model. Requests using the Universal model, which is enabled by default, are not affected by this issue.

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