The Cartesia provider for the AI SDK
contains Sonic 3.5 speech generation, Ink-Whisper batch transcription, and Ink 2 realtime and streaming transcription support.
Deploying to Vercel? With Vercel's AI Gateway you can access Cartesia (and hundreds of models from other providers) — no additional packages, API keys, or extra cost. Get started with AI Gateway.
Setup
npm i ai @ai-sdk/cartesia
Skill for Coding Agents
If you use coding agents such as Claude Code or Cursor, we highly recommend adding the AI SDK skill to your repository:
npx skills add vercel/ai
Usage
import { cartesia } from '@ai-sdk/cartesia';
import { generateSpeech } from 'ai';
const { audio } = await generateSpeech({
model: cartesia.speech('sonic-3.5'),
text: 'Hello from the Vercel AI SDK!',
voice: 'a0e99841-438c-4a64-b679-ae501e7d6091',
});