AI product demo avatar: live agent or recorded clip?
Tavus builds live demo agents that answer buyers; Sume renders a 4-60 second avatar clip with your product image. Where each fits, plus Sume per-second prices.
Use a live demo agent when the buyer's own questions decide the sale and you can maintain a knowledge base, guardrails and calendar hooks. Use a recorded avatar clip when you already know the first minute of the pitch and want it rendered once, reviewed, and shown to everyone. Sume does the second: it renders a script-driven talking video from a reusable avatar, with an optional product image, and it does not run live conversations.
The live side comes from Tavus's guide to AI product demos, published 2026-10-02 and read 2026-10-06. It describes a PAL demo as 'a live, two-way conversation in which the buyer asks a question and gets an answer before the moment passes'; that PAL can adjust the explanation by role, take pricing and integration questions, and book a follow-up meeting in the session.
What a live demo needs before it works
Tavus lists seven setup steps. Each one is work that a recorded clip does not have:
- Describe the PAL in PAL Maker: role, tone, scope.
- Pick a stock or custom replica for face and voice.
- Upload product documents to the knowledge base.
- Set objectives and guardrails through the API.
- Connect function calling to a calendar and CRM.
- Turn on memories for returning visitors.
- Test it, then embed it on your site.
Side by side
| Question | Live demo agent (Tavus) | Sume recorded clip |
|---|---|---|
| What the buyer gets | A conversation that answers their questions | One finished video of 4-60 seconds |
| What you set up | Seven steps: persona, replica, knowledge base, guardrails, functions, memories, embed | An avatar handle, a script, optionally a product image and a scene prompt or photo |
| Who sees the same thing | Each session differs | Everyone sees the same reviewed file |
| Review before it reaches a buyer | Test the agent, then embed | Approve first-frame stills with a preview, then render |
| How you pay | The article gives no price | Per second of video, by quality tier |
What a 45-second Sume demo clip costs
Avatar creation is a one-time $0.95. The clip is charged per second, and adding a product image costs a little more per second. These are the charged rates in Sume's pricing code on main, read 2026-10-06. A 45-second clip at 9:16 with a product image:
| Quality | Rate per second | 45 seconds |
|---|---|---|
| standard | $0.194 | $8.73 |
| plus (default) | $0.258 | $11.61 |
| max | $0.58 | $26.10 |
A sensible split
Record the opening that every visitor needs: what the product is, who it is for, the one claim you stand behind. Use the preview step to approve the first frame before paying for the render, as described in Avatar video previews. Then send people who want specifics to a person or to a live agent. A rendered clip cannot answer a question nobody scripted, and it should not pretend to.
Sources
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Written by Sume