AI SDK - Cartesia Provider

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

The Cartesia provider is available in the @ai-sdk/cartesia module. You can install it with

npm i @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

Provider Instance

You can import the default provider instance cartesia from @ai-sdk/cartesia:

import { cartesia } from '@ai-sdk/cartesia';

Example

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',
});

Documentation

Please check out the Cartesia provider documentation for more information.