Build live avatars into your product with Interactive Avatar API

Give your product a real-time avatar that listens, responds, and lip-syncs on the fly while you keep full control of the AI behind it. And the best part? You get 500 free minutes to try it out.

What's new

• Bring your own LLM and speech stack: Your model, your knowledge base, your logic — Synthesia only renders the avatar. Don't want to bring your own text-to-speech? Use ours, built into the plugin at no extra cost.
• Drop it into your existing agent: Connect through the official livekit-plugins-synthesia plugin — a couple of lines of code, and the avatar joins your LiveKit room as a live participant.
• Natural, interruptible conversations: Turn-taking and mid-response interruptions are supported out of the box, so people can talk over the avatar the way they would a real person.
• Use Express 2 avatars, including synthetic and cartoon avatars

Teams are already using this for always-on customer support that hands off to a human when needed, sales reps that qualify leads and book demos, training, and kiosks or lobby screens that greet and guide visitors in person.

Get your API key and check out the documentation to get started.

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