TRAINING & ROLE-PLAY
Practise conversations that feel real
Create repeatable sales, onboarding, coaching, and scenario simulations with an expressive character people can speak to naturally.
REAL-TIME EMBODIED AI
Put an Unreal-quality AI character in any browser.
Create lifelike training, product demonstration, concierge, and interactive character experiences without operating the voice, AI, rendering, or streaming infrastructure yourself.
✓ No client GPU✓ No installation✓ One browser session API
AStack browser experience
PRODUCT PREVIEW
Unreal character, streamed to the browser
WHAT YOU CAN CREATE
Built for experiences where presence matters
AStack gives teams a premium character interface for situations where a standard chatbot, voice agent, or flat video avatar falls short.
PRODUCT & CONCIERGE
Turn a demonstration into a conversation
Guide customers through products, properties, destinations, and branded environments with an always-available digital host.
INTERACTIVE EXPERIENCES
Give characters a voice and a world
Build interactive characters for entertainment, museums, events, fan experiences, and game-adjacent projects.
AGENCIES & UNREAL TEAMS
Deliver the experience, not the infrastructure
Bring your character and creative direction. AStack handles the conversational runtime, rendering, streaming, and session delivery.
WHY ASTACK
The character experience, already connected.
Focus on your audience, content, and creative direction. AStack brings the moving parts together behind one session.
01
Premium 3D presence
Use Unreal-rendered characters when a voice or talking-head tile is not enough to carry the experience.
02
Delivered in the browser
Stream the rendered character to a modern browser with no client GPU, game installation, or custom player required.
03
One managed runtime
Voice, intelligence, speech, facial motion, rendering, and secure session delivery work together behind one integration.
HOW IT WORKS
From creative concept to live conversation
A simple product workflow on top of a deeply integrated real-time stack.
1
Design the experience
Choose the character, world, conversation, and outcome that matter to your audience.
2
Connect your application
Create a session from your backend and embed the browser player in your product.
3
AStack runs the session
We operate the conversation, character animation, cloud rendering, and secure stream.
SIMPLE PRICING
Pay only for active session time
Start with free credit, then use one straightforward metered plan.
PAY AS YOU GO
$6/ hour
$0.10 per minute of active session time.
$10 credit when you sign up
- ✓ No monthly fee or commitment
- ✓ Usage based on active session duration
- ✓ Up to 5 concurrent sessions
- ✓ Usage, billing, and performance dashboard
BUILT FOR DEVELOPERS, TOO
One browser-safe session contract.
Your backend creates the session. The browser receives only the credentials and signed player URL it needs.
Read the integration guide →Loading...Give your next experience a face.
See the browser-delivered character experience, then start building with free credit.