Managed Agents at Previously $0.06 $0.03/minManaged Agents are Previously $0.06 $0.03/min.

ServiceNow#1 on EVA-Bench

Artificial Analysis#1 on Speech Agent Arena

AI virtual agent that answers your phone in your brand's voice.

Give callers one character with your name, voice, and wording, and answer from your approved guides.

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Trusted by leading teams

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Ranked #1

on EVA-Bench and Speech Agent Arena

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Indeed
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Give callers one character they recognize on every call

Callers hear the same character every time, built from your instruction and the voice you pick.

The agent greets callers by its name, says it's an AI, and signs off with the line you write.

An AI virtual agent callers recognize as yours

What is an AI virtual agent?

An AI virtual agent is software that holds a real conversation with your customers on the phone, under a name and a voice you choose. Teams comparing virtual agent AI platforms look at accuracy and integrations. Add one test. Call it twice and see if the same character answers.

  • Fetch approved ride guide
  • Look up order
  • Open care case
  • Transfer to care team

Why do virtual AI agents sound so generic?

A virtual AI agent built on a stock prompt comes out polite and slightly corporate, like every other bot. That's a loss if people chose your brand for its personality. Human teams vary by shift, and hold scripts rarely get reviewed at all.

This is the second time my battery has failed!

I'm sorry, that's twice. Let me pull up your order.

lookup_orderWB-7790: Tarn 2, battery replaced Aug

What can I control in an AI assistant virtual agent?

Wren, the sample for Wrenlow Bikes, has a fixed greeting, a sign-off, the word "ride" in place of "usage" and a rule against joking with upset callers. Facts come from approved guides through tools you configure. Pick a library voice, or clone one you have permission to use.

  • Frame size for a 5-foot-9 rider0:47
  • Order status, WB-77900:58
  • Winter riding tips1:21

What happens when a caller is angry?

On a second battery failure, Wren apologizes once, drops the sign-off, opens a care case with both failures on it and says when the care team will ring. It admits it's an AI, and anything it shouldn't decide goes to your team.

On brand

Did the agent say it was Wren, an AI assistant, use the sign-off, and avoid the phrases on the avoid list?

What an AI powered virtual agent gives you that a generic bot can't

Support leaders comparing the top AI virtual agent platforms tend to buy on containment and keep or lose the tool on how it sounds. These are the controls that decide how yours sounds.

One greeting and one sign-off

"Enjoy the ride" closes a good call every time, in the wording you approved. Regular callers start to expect it.

Your vocabulary, your product names

Spell out model and street names in the instruction and the agent says them your way, so the Tarn X never comes out wrong.

Tone that changes with the caller

You decide how the character behaves when someone is angry. Wren loses the jokes, skips the sign-off and gets to the care case.

Facts that don't drift

Frame sizes and weights come from your approved ride guide, read at call time. Personality lives in the instruction, and specs stay out of it.

A voice that belongs to you

Use a voice from the library or clone your own voice talent with Cartesia voice cloning, as long as you own it or have permission.

It never poses as a person

Ask whether it's real and Wren says plainly that it's an AI. It can read you the ride guide, and it won't claim a ride it never took.

Character depends on timing as much as wording

A witty line delivered late stops being witty. Cartesia's speech models keep the rhythm of the call, so the personality you wrote survives contact with a real caller.

  • $0.03per minute
  • #1on Speech Agent Arena and EVA-Bench
  • 24/7answers every call, at any hour

Knows when to stop talking

A caller jumps in on the sign-off to ask one more question. The agent drops what it was saying and answers, like a person at the counter would.

Personality on top of real lookups

Choose the LLM, then give the character the tools that fetch the ride guide, look up an order, open a care case and reach the care team.

The voice is half the brand

Browse the voice library for your character, or use a custom clone made from a recording you have the rights to.

A character, a scripted bot or the support team

Teams planning an AI virtual agent call center usually run some mix of the last two already. The question is which calls deserve a person and what the rest should sound like.

AI virtual agentScripted phone botLive support team
Sounds like your brandSet in the instruction, on every callUsually a generic recordingVaries by person and shift
Callers go off scriptFollows the conversationFalls back to the menuYes
An upset callerApologizes once, opens a care caseOften repeats the optionsYes, and a person reads the room best
Answers from approved guidesRead through a tool at call timeOnly what was recordedFrom memory or a knowledge base
Brand checksEvery call scored on greeting and wordingNoneUsually a sample of calls
Late-night callsSame character at any hourAvailable, same menuOnly if you staff nights
Cost shape$0.03 per minute, with LLM usage and telephony extraUsually a platform feeSalaries, busy or quiet

See which calls sounded like your brand

Every call is recorded and transcribed. See which calls used Wren's greeting, sign-off and wording, and which slipped.

Launch an AI virtual agent in three steps

Start building

  1. Clone Wren

    Copy this agent, then rewrite its name, greeting, sign-off, words to avoid and rules for upset callers.

  2. Connect your guides and orders

    Link your approved guides, your order lookup and your case system, pick or clone a voice, then point your number at the agent.

  3. Try to break character

    Call as an angry customer, then ask what it rode last weekend. Go live once both transcripts pass your own On brand check.

Enterprise-grade security

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    HIPAA compliant

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    SOC 2 Type 2

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Virtual agent FAQs

What is an AI virtual agent?

An AI virtual agent is an AI voice agent that answers your phone as one character, with a name, a voice and a way of speaking, so every caller hears the same brand voice.

How do I make an AI virtual agent sound like my brand?

You pick a voice and write the name, greeting, sign-off and word choices into the instruction, and the agent uses them on every call.

Can an AI virtual agent use a cloned voice of our own voice talent?

Yes. Cartesia voice cloning makes a custom voice from a recording, and the agent uses it like any other voice. Only clone a voice you own or have explicit permission to use.

Should an AI virtual agent say it is an AI?

Yes. Wren says so in the greeting and answers plainly when a caller asks.

Can an AI virtual agent look up orders?

Yes. The agent reads orders and your approved guides through tools you configure, and uses the LLM you choose.

Can the agent hand a caller over to a person?

Yes. Wren offers the care team when a caller has called twice about one problem, and you control exactly when the agent transfers.

What are the best AI virtual agent solutions?

The best one for you holds a real phone conversation, stays in character on a hard call and reads facts from your systems at call time. Test candidates by calling them with an angry customer story. Check that you can read every transcript, score every call and choose your own LLM. You can try the sample bike shop on this page first.

Can an AI virtual agent work in a call center?

Yes. In a call center, it usually takes overflow and routine calls while people handle the rest, and it can transfer to your team by rules you set. The contact center page shows one agent answering in each client's name, tracking orders and opening warranty cases.

What companies offer AI virtual agent solutions?

Many do, from contact center suites to voice AI companies. Cartesia offers an agent you build yourself, with your own name, voice, instruction and LLM. When you compare companies, ask who controls the character, whether facts come from your systems, and whether every call is recorded and transcribed.

How much does an AI virtual agent cost?

A character costs the same to run as a plain agent, $0.03 per minute of call time, and you pay for the conversations it has. LLM usage is billed separately. A Cartesia phone number adds $0.014 per minute, or nothing if you bring your own Twilio account or SIP trunk. The free plan includes $1 of agent calls a month, so you can test Wren's replacement before you pay. See pricing.

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