Cartesia Ink Speech-to-Text API

aid: cartesia:stt-api
name: Cartesia Ink Speech-to-Text API
description: The Ink streaming speech-to-text API transcribes audio in real time with native turn detection
  tuned for voice agents and conversational systems.
humanURL: https://docs.cartesia.ai
baseURL: https://api.cartesia.ai
tags:
- STT
- Streaming
- Turn Detection
- Voice Agents
- WebSocket
properties:
- type: Documentation
  url: https://docs.cartesia.ai
- type: APIReference
  url: https://docs.cartesia.ai/api-reference
- type: SDK
  url: https://github.com/cartesia-ai/cartesia-python
- type: SDK
  url: https://github.com/cartesia-ai/cartesia-js
- type: Pricing
  url: https://cartesia.ai/pricing
features:
- name: Streaming Transcription
  description: Real-time transcription of audio streams over WebSocket.
- name: Turn Detection
  description: Native turn detection to decide when users finish speaking.
- name: Voice Agent Optimization
  description: Tuned specifically for voice agent loops and barge-in handling.
useCases:
- name: Voice Agent Listening
  description: Provide low-latency listening for voice agent stacks.
- name: Live Captioning
  description: Generate live captions for meetings and broadcasts.
- name: Voice Form Capture
  description: Capture structured input from voice in real time.
integrations:
- name: LiveKit
- name: Pipecat
- name: Daily
- name: Twilio
authentication:
- type: API Key
  description: API key authentication via the X-API-Key header alongside the Cartesia-Version header.