How does LiveAvatar work with language models?

LiveAvatar can be connected to Large Language Models (LLMs) like ChatGPT through code integration. Users communicate with the LLM, and the LiveAvatar serves as the visual interface, speaking the LLM's responses. The avatar can speak any language supported by the connected LLM, with accent determined by the assigned Voice ID.

What are the pricing plans for LiveAvatar?

LiveAvatar offers three tiers: Free ($0 with 10 credits/month), Essential ($99 with 1000 credits/month), and Business (custom pricing). The Free plan includes preset avatars and basic features, Essential adds custom avatars and removes watermarks, while Business offers enhanced features like 1080p custom avatars and dedicated support.

What are the main use cases for LiveAvatar?

LiveAvatar is used for multiple purposes including thought leadership (digital twins), holographic communications, test preparation, recruiting, language learning, and sales training. Companies like Zeligate, Speakology, and Copient AI have successfully implemented LiveAvatar for their specific business needs.

How do you create a custom LiveAvatar?

Custom LiveAvatars can be created with just 2 minutes of footage. The platform offers a broad library of avatars across different ages, ethnicities, and styles, or users can create their own branded avatars that are fully customizable to their needs.

LiveAvatar by HeyGen

WebsiteFreeAI Avatar Generator AI Voice Assistants

LiveAvatar by HeyGen is a real-time AI avatar technology that enables lifelike, interactive conversations with natural facial expressions, lip-sync, and body language through a business-ready API.

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Updated:Nov 13, 2025

What is LiveAvatar by HeyGen

LiveAvatar is HeyGen's next-generation avatar technology that transforms static content into dynamic, real-time interactions. It allows businesses and developers to create hyper-realistic digital humans capable of engaging in spontaneous conversations across multiple languages. Unlike pre-recorded videos, LiveAvatar can listen, respond, and speak back in real-time, creating a truly human-like digital presence that can be integrated into various applications, websites, and live experiences.

Key Features of LiveAvatar by HeyGen

LiveAvatar by HeyGen is a real-time AI avatar platform that enables interactive, two-way conversations with lifelike digital humans. It features natural lip-sync, facial expressions, and gestures, allowing for seamless integration into applications through an API. The platform supports custom avatar creation with just 2 minutes of footage, offers multiple languages, and provides enterprise-grade scalability for businesses to create engaging, personalized AI interactions.

Hyper-realistic Human Expression: Built using professional-grade facial details and body movement technology that captures every nuance for natural lip-sync, expressions, and gestures in real-time

Custom Avatar Creation: Create personalized avatars with just 2 minutes of footage, or choose from a broad library of pre-made avatars across different ages, ethnicities, and styles

Real-time Interactive Conversations: Enables spontaneous AI-driven dialogue with minimal latency, supporting natural back-and-forth conversations with users

Enterprise-grade API Integration: Offers low-latency, high-reliability API with smooth onboarding and scalable infrastructure designed for global reach

Use Cases of LiveAvatar by HeyGen

Language Learning: Provides interactive language practice with AI tutors that help students build confidence through natural conversations in 175+ languages

Sales Training: Enables scalable role-play scenarios and sales training programs with AI avatars that provide consistent, realistic practice environments

Recruitment: Streamlines hiring processes by conducting initial interviews and assessments through AI avatars, saving time and reducing bias

Digital Thought Leadership: Creates digital twins of industry leaders to scale their presence and insights across multiple channels and audiences

Pros

High level of realism with professional-grade facial expressions and movements

Quick custom avatar creation with minimal input required

Enterprise-ready with robust API and scalable infrastructure

Supports multiple languages and use cases

Cons

Session duration limits on lower-tier plans

Custom avatars limited to 720p quality in Essential plan

Requires stable internet connection for real-time interactions

May have higher costs for large-scale enterprise usage

How to Use LiveAvatar by HeyGen

Sign up for LiveAvatar: Go to app.liveavatar.com and create an account. You can start with the free plan that includes 10 credits per month.

Choose your avatar: Either select from the preset avatar library (1080p quality) or create your custom avatar by recording a 2-minute continuous video footage following their quality guidelines.

Set up your Knowledge Base: Create a prompt/knowledge base to guide your avatar's responses since it's powered by an LLM (Large Language Model). This will determine how your avatar interacts and responds.

Integrate the LiveAvatar SDK: Install the SDK using npm: 'npm install @heygen/liveavatar-web-sdk' and follow the API documentation at docs.liveavatar.com for implementation.

Initialize a LiveAvatar session: Use the SDK to create a new session with your sessionId and sessionToken. Configure settings like voiceChat options.

Connect to your LLM: Connect your LiveAvatar to your preferred LLM (like ChatGPT) to power the conversation intelligence. The avatar will speak the responses provided by the LLM.

Manage sessions: Remember to properly start and stop sessions using session.start() and session.stop() to avoid unnecessary credit usage. Send heartbeats every 30 seconds to keep sessions active.

Monitor usage: Track your credit usage through the dashboard. One credit typically covers a certain duration of avatar interaction time.

LiveAvatar by HeyGen FAQs

LiveAvatar is HeyGen's real-time AI avatar technology that enables lifelike interactive conversations between software and end users. It features natural facial animation, lip-sync, and instant responses, unlike pre-recorded media. The technology can be integrated through an API to create scalable human presences for various applications.

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