An "interactive AI avatar" is a character that talks with your visitors in real time: it listens or reads, answers out loud, and moves its face while it speaks. That differs from the AI avatar generators behind most "best AI avatar" lists, which make pre-recorded videos for marketing and training. A recorded video can't answer a visitor's question.
For a business website, the real-time options fall into four groups.
1. Real-time video avatars
How they work: the provider generates video of a face, usually based on a filmed person, on its own GPUs, and streams it into your page like a video call. Your AI (or theirs) decides what to say; their system makes the face say it.
Examples: Tavus, HeyGen LiveAvatar (HeyGen retired its older Interactive Avatar API on 31 March 2026), D-ID agents and Anam.
Strengths: the most photorealistic faces, and quick to try. Most offer an embed widget or an SDK.
Watch out for: cost grows with every minute of conversation, because each live session keeps a GPU busy. As published in November 2026, Tavus plans ran from $22 to $975 a month for 60 to 4,000 minutes, with extra minutes at $0.26–0.35. The face is a filmed person rather than a character made for your brand, and streaming adds delay before the visitor sees the answer.
2. Enterprise digital humans
How they work: a custom, game-engine-quality character, often a MetaHuman, built in a multi-month project and rendered on servers or streamed from Unreal Engine.
Examples: UneeQ is a well-known vendor. Soul Machines, once its main rival, went into receivership.
Strengths: cinematic quality, a fully custom character, and integration work done for you.
Watch out for: enterprise budgets and timelines, and GPU costs for every live viewer. They suit flagship deployments more than everyday website traffic.
3. 3D hosts drawn by the visitor's device
How they work: a 3D character (a mesh with facial blend shapes, like a game character) is sent to the browser and drawn with WebGL. The conversation sends only text, audio and animation data, never video.
Example: Lobbyface builds these. Our host Riya at CELED Studio answers in about 3 seconds and runs on ordinary phones.
Strengths: the cost doesn't grow with minutes watched, because the visitor's device does the drawing. That allows a fixed monthly fee. The character, voice and look are designed for your brand. Expressions and eye contact are animated on the device, so she reacts instantly.
Watch out for: a designed character looks stylised rather than filmed. It also takes careful optimisation to run smoothly on older phones.
4. Chat widgets with a face
How they work: a normal text chatbot, sometimes with a static picture or a short looping animation and a synthetic voice.
Strengths: cheap and quick to set up.
Watch out for: there is no real presence. The face doesn't speak the answer, so most visitors treat it as a chat bubble. See AI avatar vs chatbot for when that's enough.
Side by side
| Real-time video avatar | Enterprise digital human | 3D host in the browser | Chat widget | |
|---|---|---|---|---|
| Looks | Filmed person | Cinematic character | Designed brand character | Picture or icon |
| Rendered by | Provider's GPUs | Servers or Unreal streaming | Visitor's device | Nothing to render |
| Billing | Per minute | Project + platform fee | Setup + fixed monthly fee | Monthly |
| Your own character | Limited | Yes | Yes | No |
| Phones | Yes (video) | Yes (video) | Yes, if optimised | Yes |
| Time to launch | Days | Months | Weeks | Days |
How to choose
Answer three questions:
- How many conversations, and how long? If you expect many visitors talking for several minutes, per-minute billing adds up fast; a 3D host keeps the cost flat. A handful of short sessions a day suits video avatars.
- Does the character need to be yours? A brand that wants its own face, outfit and personality needs a 3D host or an enterprise digital human.
- Where will it live? For every visitor on your website, use something light enough for phones. For a lobby screen or an event stand, cinematic quality is affordable, because there's only one viewer at a time.
Whichever you pick, check the basics: answers only from your own information, a clear "I'm an AI assistant" notice (required in the EU), contact handover when she doesn't know, and a response time under a few seconds.
To see a 3D host working on a real business, watch Riya's 36-second video or read 3D AI avatars vs video avatars.