LiveAvatar

What it does

LiveAvatar, from HeyGen, is an API for putting a talking video avatar into an app or web page. In FULL mode it takes the user's speech, handles speech recognition, a language model and text-to-speech, and streams back a synchronized 1080p avatar. In Avatar Only (LITE) mode you supply your own conversational stack and it handles the real-time video streaming.

Developers start by getting an API key, then call the embeddings endpoint to receive a short-lived iframe URL they can drop into a page. For more control, they can bring an OpenAI-compatible LLM, use voice providers such as ElevenLabs, Fish Audio or Cartesia, switch between conversational and Push-to-Talk modes, or build their own interface with the Web SDK over LiveKit or Agora. Its pitch is unlimited concurrent sessions at no extra charge, plus a Sandbox Mode that uses no credits.

It suits developers building sales assistants, support or training agents, tutors and interactive hosts. Access requires an account and API key at app.liveavatar.com, and usage is billed per minute in credits. It is an API and SDK, not a standalone consumer app. Full pricing tiers are not confirmed, and quality and latency figures are the vendor's own claims.

What it can do

• Stream real-time 1080p avatars that speak and respond to users
• FULL mode managing speech recognition, LLM, TTS and WebRTC
• Avatar Only (LITE) mode for your own conversational stack
• Embeddable iframe session generated through an API call
• Push-to-Talk and conversational modes
• Sandbox Mode for testing without credits

Works with

• ElevenLabs
• Fish Audio
• Cartesia
• LiveKit
• Agora
• OpenAI-compatible LLMs

Example workflows

Embed a sales assistant

Input: API key, avatar ID and context ID. Steps: call POST /v2/embeddings with is_sandbox true, receive the iframe script, paste it into a page and test. Output: an on-page talking avatar session.

Custom tutor with own stack

Input: your LLM endpoint and TTS voice. Steps: choose Avatar Only (LITE) mode, connect via LiveKit or Agora, render the stream with the Web SDK. Output: a custom-UI avatar tutor.

Before you choose

• FULL mode uses 2 credits per minute versus 1 for Avatar Only; credit-to-dollar conversion is not confirmed
• The $0.01/min rate applies only at the top volume tier
• Speed and uptime figures (under 300ms median first frame, 99.99% uptime) are vendor claims

Listed under

• Coding
• API
• Avatars
• Customer support
• Developers
• Enterprise
• Language learning

Get started

Sign up at app.liveavatar.com

1. Sign up at app.liveavatar.com and copy your API key from the developers page
2. Run a Sandbox Mode session to test without spending credits
3. Choose FULL or Avatar Only mode and embed or build with the Web SDK

Credits are consumed per minute: 2 for FULL mode, 1 for Avatar Only. Sandbox Mode uses no credits. Only the top-tier $0.01/min rate is confirmed; other tiers and credit prices were not.

Source: liveavatar.com, checked 29 Oct 2026. Prices can change; check before you buy.

Sources for this overview

Product pages, documentation, and pricing checked 29 Oct 2026. Each source supports part of the overview; availability and prices can change.

• Real-Time Avatar API — Unlimited Concurrency, Pennies a Minute | LiveAvatar by HeyGen • LiveAvatar ↗www.liveavatar.com
• Real-Time Avatar API — Unlimited Concurrency, Pennies a Minute | LiveAvatar by HeyGen • LiveAvatar ↗www.liveavatar.com
• LiveAvatar Overview - LiveAvatar Documentation ↗docs.liveavatar.com

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liveavatar.com: product, pricing and policy pages

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Last checked 29 Oct 2026. Every field keeps its source and date; unknown means we couldn’t confirm it.