AI voice agents that answer every call
EXTRAVOX picks up 24/7, answers questions from your knowledge base, books appointments and hands complex calls to your team — in a natural, human voice.
- 20 free minutes
- No credit card needed
- Cancel anytime
78% of calls resolved by AI
Most callers get their answer, booking or update without ever waiting for a human.
Live in < 1 hour
Describe your business, upload your documents, connect a number. No code, no long onboarding project.
You stay in control
Choose the voice, the instructions and exactly when calls go to a human. Review every transcript.
Don’t take our word for it. Talk to it.
Start a real conversation with Emily, an AI voice agent, right from your browser. Ask her anything — interrupt her, change your mind, test her like a real customer would.
- • Uses your microphone, nothing to install
- • Up to 5 minutes of talk time per visitor
- • Tell her about your business and she’ll show you what she could do
Emily
AI voice agent · EXTRAVOX
Talk to Emily in your browser. Ask anything — interrupt her like a real customer would.
Your team shouldn’t spend the day answering the phone — they should be serving the customers in front of them.
Missed calls
are missed customers
Busy lines, lunch breaks and after-hours calls turn into voicemails nobody returns — and customers who call your competitor instead.
Same questions
all day long
Opening hours, prices, availability, “where is my order?”. Your team repeats it instead of doing the work that needs them.
After hours
is when customers call
Hiring night shifts or a call center is expensive. An AI agent costs a fraction and never puts anyone on hold.
A whole front desk, in one voice
One agent. Every conversation.
Inbound, outbound and on your website — EXTRAVOX handles the calls your team shouldn’t have to.
Incoming call
Answered instantly
Answers every incoming call
Give your agent a phone number and it picks up instantly — day, night and weekends — with your business knowledge at hand.
- Instant pickup, no hold music
- Answers from your knowledge base
- Custom call stages & end-of-call behaviour
Campaign · Spring follow-up
Calls your contact lists for you
Upload a list, launch a campaign and your agent follows up leads, confirms appointments or collects feedback at scale.
- Campaigns from contact lists
- Lead follow-up & qualification
- Full call history & transcripts
On your website, with a human backup
Add a talk-to-us widget to any site with one snippet, and transfer calls to your team the moment a human is needed.
- One-snippet website widget
- Warm transfer to a human
- API keys for developers
Connects to the tools you already use
Carrier-grade telephony, real-time voice AI and secure billing — all wired together for you.
Twilio
Phone numbers & telephony
Ultravox
Real-time voice AI
Website widget
Talk from any web page
Knowledge bases
Train on your documents
Human transfer
Hand off to your team
REST API
API keys for developers
Stripe
Secure card billing
PayPal
Pay with PayPal
From sign-up to first call in four steps
No developers, no long onboarding project.
Create your assistant
Describe your business and pick a voice. EXTRAVOX can even write the instructions for you.
Add your knowledge
Upload documents, FAQs, price lists and policies so your agent answers like your best employee.
Connect a phone number
Buy a number in a few clicks or connect your own Twilio number. Add the website widget too.
Go live & improve
Watch calls come in, read transcripts and fine-tune instructions whenever you like.
4Once you’re live, every call looks like this
Smile Dental · Front desk agent
Incoming call · +1 (415) ••• ••12
Every call, recorded, transcribed and measured
Replay any conversation, read the transcript and see exactly what your agent did — then refine it in seconds.
78%
Calls resolved by AI
88%
Handled without a human
24/7
Availability
Call history
Today- AI2:14Resolved
Booked appointment
+1 (312) ••• 0148
- AI0:48Resolved
Opening hours & parking
+1 (646) ••• 7731
- →1:32Human
Transferred — billing dispute
+1 (415) ••• 2290
- AI1:05Resolved
Rescheduled to Friday
+1 (213) ••• 5512
Transcript · Booked appointment
Agent: I can do Thursday at 4:30 — shall I book that for you? Caller: Yes please, perfect.
Hear it handle real conversations
Pick your industry and listen to how an EXTRAVOX agent sounds on the phone.
Never miss a reservation during the dinner rush
Your agent takes bookings, answers questions about the menu and opening hours, and handles changes — while your staff stays on the floor.
- Table bookings & changes
- Menu, allergens & hours
- Takeaway order questions
Example conversation
Caller: Hi, do you have a table for four tonight around 8?
Agent: I have 8:15 available on the terrace or 8:30 inside. Which would you prefer?
Caller: Terrace, please.
Agent: Done — table for four at 8:15 on the terrace. We look forward to seeing you!
Simple plans. No contracts.
Start free with 20 minutes, then pick the plan that fits your call volume.
Starter
Ideal for small teams getting started with AI voice agents.
$14.99/ week
Billed weekly — cancel anytime
Get started- 150 minutes included
- Up to 10 AI assistants
- 3 phone numbers
- 5 knowledge bases
- Email support
Professional
Most popularFor growing businesses that need more capacity and control.
$19.99/ month
Billed monthly — cancel anytime
Get started- 250 minutes included
- Up to 50 AI assistants
- 10 phone numbers
- 10 knowledge bases
- Priority email & live chat support
Enterprise
Maximum scale for high-volume operations with premium support.
$99.99/ year
Billed annually — best value
Get started- 1,000 minutes included
- Unlimited AI assistants
- 100 phone numbers
- 50 knowledge bases
- Dedicated account manager & 24/7 support
Compare every feature on the pricing page.
Questions, answered
Will callers know they're talking to an AI?
EXTRAVOX agents speak with natural, human-sounding voices, handle interruptions and respond in real time. You decide how your agent introduces itself — many businesses choose to be transparent, and callers still finish the conversation.
What happens if the AI can't answer a question?
You define when to escalate. Your agent can transfer the call to a human on your team, take a message, or follow the end-of-call behaviour you configure — with the full conversation context available in your call history.
How long does setup take?
Most teams have a working agent in under an hour: create an assistant, add your knowledge base (documents, FAQs, policies), connect a phone number and go live. No code is required.
Can I use my own phone number?
Yes. You can buy a new number directly from the dashboard in a few clicks, or connect a number you already own through your Twilio account.
Does the agent make things up?
Your agent answers from the knowledge bases and instructions you give it. You can review every call transcript and refine its instructions at any time.
Can it make outbound calls too?
Yes. Upload a contact list, create a campaign and your agent calls each contact — following up on leads, confirming appointments or running surveys.
Can I add a voice agent to my website?
Yes. Create a website widget in the dashboard and paste one snippet into your site — visitors can talk to your agent straight from their browser.
How does billing work? Can I cancel?
Each plan includes a set number of talk-time minutes per billing period. There are no long-term contracts — you can cancel at any time from the billing page. You can also start free with included trial minutes, no card needed.
Let your next call be answered by AI
Start with 20 free minutes. Your first agent can be live before your coffee gets cold.