SpeechKit Hybrid architecture

SpeechKit Hybrid comprises the following components:

• Envoy: Routing server that receives incoming gRPC requests and determines the SpeechKit Hybrid components to handle them.
• License server: Envoy dynamic configuration server for accounting Yubikey licenses or providing data required to pay for resources.
• STT server: Speech recognition server.
• TTS server: Speech synthesis server.

Relationship between SpeechKit Hybrid componentsRelationship between SpeechKit Hybrid components

Component relationships depend on the licensing model selected by a partner.

YubikeyYubikey

The License server limits the maximum number of speech recognition sessions and maximum performance (requests per second) for speech synthesis. These parameters are read from a Yubikey hardware authentication device. To increase their values, purchase additional Yubikey hardware authentication devices. The component relationships are shown on the diagram below:

Cloud BillingCloud Billing

No limit on the number of sessions and requests per second. Information about each service request is sent to Yandex Billing. Total service usage fees are specified in a payment invoice issued to a partner in their billing account. The component relationships are shown on the diagram below: