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Customize your conversation experience by selecting specific speech-to-text (STT) and text-to-speech (TTS) settings. Our platform is powered by Deepgram for high-accuracy transcription and ElevenLabs for life-like vocal synthesis.

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Supported Languages

We support a wide range of global languages. Spoken interactions are processed through a dual-engine pipeline:
  1. Deepgram (STT): Transcribes your participant’s audio into text.
  2. ElevenLabs (TTS): Converts the agent’s response into natural-sounding speech.
Below is a sample list of the primary languages supported across our standard models:
LanguageSTT Code (Deepgram)TTS Support (ElevenLabs)
EnglishenYes
SpanishesYes
FrenchfrYes
GermandeYes
HindihiYes
PortugueseptYes
ChinesezhYes
JapanesejaYes
KoreankoYes

Deepgram STT

Models and supported languages

Elevenlabs TTS

Models and supported languages

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Setting the Conversation Language for your agent

While creating an agent you have the ability to set the STT provider and select the desired language. 
curl --request POST \
  --url https://api.trugen.ai/v1/ext/agent \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: YOUR_API_KEY' \
  --data @- <<EOF
{
  "agent_name": "AI Agent",
  "config": { "timeout": 240 },
  "avatars": [
    {
      "config": {
        "llm": {
          "provider": "openai",
          "model": "gpt-4.1-mini",
        },
        "stt": { "provider": "deepgram", "model": "nova-3", language: "multi" },
        "tts": { "provider": "elevenlabs", "voice_id": "ZUrEGyu8GFMwnHbvLhv2" }
      },
      "persona_name": "Sample AI Agent",
      "persona_prompt": "You're a helpful AI agent."
    }
  ]
}
EOF
[!TIP] When using multi mode, the ElevenLabs TTS engine will automatically adjust its output to match the detected language of the participant for a seamless localized experience.