Quotas and limits in SpeechKit
Yandex SpeechKit has the following limits:
- Quotas are organizational restrictions that can be changed by technical support on request.
- Limits are technical limitations due to Yandex Cloud architectural features. The limits cannot be changed.
If you need more resources, contact support
Quotas
Type of limit | Value |
---|---|
Streaming recognition mode | |
Requests per second | 40 |
Synchronous recognition | |
Requests per second | 20 |
Asynchronous recognition | |
Recognition requests per hour | 500 |
Operation status check requests per hour | 2,500 |
Billable hours of audio per day | 10,000 |
Speech synthesis | |
Requests per second | 40 |
Limits
Type of limit | Value |
---|---|
Streaming recognition mode | |
Maximum duration of transmitted audio for entire session | 5 minutes |
Maximum size of transmitted audio data | 10 MB |
Maximum number of audio channels | 1 |
Synchronous recognition | |
Maximum file size | 1 MB |
Maximum duration of audio | 30 seconds |
Maximum number of audio channels | 1 |
Asynchronous recognition | |
Maximum file size | 1 GB |
Maximum duration of audio | 4 hours |
Period for storing recognition results on the server | 3 days |
Speech synthesis | |
Minimum duration of a pattern for synthesis | 1 second |
Maximum REST request size | 5,000 characters |
Maximum gRPC request size | 250 characters and 24 seconds |
Maximum gRPC request size in unsafe mode | 5,000 characters |