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Nappai Documentation

Gladia STT

Gladia STT is one of the components that act as the hearing of a voice agent: it turns what the caller says into text so the agent can understand it. It uses Gladia’s speech recognition service. It transcribes while the caller speaks, so the word-based interruption settings of the Voice Agent, such as Minimum Words To Interrupt, work with it.

It plugs into the STT connector of the Voice Agent node. It holds the speech recognition settings the agent uses on every call.

When to use it

  • You need the call audio processed inside the European Union.
  • Your callers mix languages, even within the same sentence.
  • You want cloud recognition that transcribes while the caller speaks.

Configuration

You need a Gladia API credential with your Gladia account key. See Credentials.

FieldWhat it does
Credential (required)The Gladia API credential used to connect to the service.
LanguageCode of the language the caller is expected to speak, for example es or en. Default: es.
Detect LanguageWhen on, Gladia follows the caller among the languages in Supported Languages, even if they switch mid-sentence. Off by default.
ModelThe Gladia model. Default and only option: solaria-1.
RegionWhere the audio is processed: eu-west (default), which keeps it in the European Union, or us-west.

Advanced options

FieldWhat it does
Supported LanguagesLanguages detection can switch between. Default: es and en. Only used when Detect Language is on.

Output

The STT output holds the speech recognition settings. It connects to the STT connector of the Voice Agent node, or to Fallback STT when you turn on Fallback Engines and want it as a backup. The editor will not let you plug it into a TTS connector by mistake.

Example

An insurer with customers in Spain wants the call audio to stay in Europe.

  1. Add Gladia STT and connect it to the STT connector of the Voice Agent.
  2. In Credential, choose the Gladia API credential.
  3. Leave Region as eu-west and Language as es.
  4. Test the agent in the playground.

Good practices

  • Gladia bills the usage to your own Gladia account. Check your usage there.
  • If you prefer the audio never to leave the NappAI server, use a local STT such as Parakeet (local, multilingual).