Speech-to-TextAsync API
Limits & quotas
Learn about Async API limits and quotas.
File limits
| Limit | Default | Notes |
|---|---|---|
| Total file storage | 10 GB | Across all uploaded files |
| Uploaded files | 1,000 | Maximum number of files stored at once |
| File duration | 300 minutes | This limit is fixed and cannot be increased |
You must manually delete files after obtaining transcription results. Files and transcriptions stored via the Async API are automatically deleted after 30 days.
Limit increases (except file duration) can be requested in the Soniox Console.
Transcription limits
| Limit | Default | Notes |
|---|---|---|
| Pending transcriptions | 100 | Requests created but not yet processing |
| Total transcriptions | 2,000 | Includes pending + completed + failed |
| File duration | 300 minutes | This limit is fixed and cannot be increased |
To keep creating new transcriptions:
- Stay below 100 pending at a time
- Remove completed/failed transcriptions so total stays under 2,000
Limit increases (except file duration) can be requested in the Soniox Console.
Learn how to track usage.