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VOICE AI FOR DEVELOPERS

Vapi lets developers build, test and deploy voice agents in minutes rather than
months.

Give it a try!
Try for free

GET IN TOUCH

Trusted by companies big and small

Use cases


SOLUTIONS FOR EVERYTHING.

Customer support, front desk, outbound sales, lead generation, telehealth, food
ordering, transportation logistics, employee training, roleplay, or whatever
else you want to build.


Inbound calls


Outbound calls


Voice products


Voice IoT


BARBERSHOP

Availability, bookings, inquiries


DENTIST OFFICE

Schedule appointments, patient FAQs


RESTAURANT

Reservations, menu inquiries


SAAS WEBSITE

Support, product information, troubleshooting


REALTOR OFFICE

Property inquiries, viewings


INSURANCE COMPANIES

Claims, policy help, support





AI made for everyone


WE’RE MAKING VOICE AI’S AS SIMPLE, RELIABLE, AND ACCESSIBLE AS ANY OTHER API IN
YOUR STACK.


THE STATUS QUO

Months to work to production, continued DevOps and R&D investment.

|   Response time
+ms
|   Live by
_


USING VAPI

In production tonight, world-class pushing DevOps and R&D.

|   Response time
ms
|   Live by
_
Testimonials


WHAT PEOPLE ARE SAYING ABOUT US

YouTube tech wizard AI Jason has just dropped a mind-blowing video showcasing
his latest creation with Relevance, @Vapi_AI and @GroqInc : a real-time, multi
channel AI voice sales agent.

🗣️ This isn't your run-of-the-mill chatbot.
Relevance AI
@RelevanceAI_
What did we demo? A real-time, natural voice AI, powered by the Groq LPU
Inference Engine over 12,000km and 12 timezones away. You know you've set new
expectations when most of the audience takes out their cellphones and begin
recording your demo. The future of AI is here in 2024, thanks to #GroqSpeed 😀

Also thank you to those who created the software and AI that made it possible:
Vapi, Mistral AI, Deepgram, PlayHT, and AI at Meta.
Jonathan Ross
CEO & Founder, Groq
I built an AI sales that do Cold Call & Whatsapp followup - powered by@GroqInc ,
@Vapi_AI & @RelevanceAI_

This AI Sales can:
1. Outreach people on whatsapp
2. Make phone call to follow up
3. Take actions in CRM based on call transcript
Jason Zhou (AI Jason)
@jasonzhou1993
You can "call" both functions and telephone numbers with the @Vapi_AI APIs
🥁🥁🥁
Daily
@trydaily
I have been using Vapi for the last 2 weeks to build a voice-based chat app. You
can join the TestFlight here...

At every step of the way, the team at Vapi have been incredible. They reached
out, pro-actively asked for feedback, and helped me overcome roadblocks all the
time.

I spent time at Stripe in 2012 and I saw what it takes to design and support a
great API. This team has that kind of magic. Incredibly bullish on them.
Richard Burton
CEO, Balance IO
Yeah, definitely take a look at @Vapi_AI. Really good developer ergonomics.

You can get started quickly, but their APIs also give you a lot of flexibility.
And they've solved a bunch of the hard, low-level stuff so you don't have to
worry about things like echo cancellation, picking the fastest endpoints if
you're using Azure, web socket reconnection logic across different platforms,
supporting WebRTC (apps, web pages) and PSTN (telephones) from the same
codebase, etc etc etc.
Kwindla Kramer
CEO & Co-founder, Daily
We've been using Vapi for the last couple months to power Speaksage, our AI for
leadership development platforms.

We've looked at every conversational voice vendor on the market - and used most
of them - and Vapi is by far the best out there. The product is rock-solid, the
features are there, and the docs are good. They've built a hell of a lot to help
with latency and interruption handling. And, best of all, the team is SUPER
responsive.
Charlie Stigler
Founder, SpeakSage
I used Vapi to build a Shopify app to help recover abandonment checkouts and it
made the entire process extremely simple. If you've tried to build a voice
system before you know you need to connect a bunch of APIs and then still have
to face the latency issue and make it sound natural, specifically when the
speaker is cut off, etc.

These guys care about building something great which is awesome to see! They
even went out of their way to open a direct line of communication for support
and feedback. Keep killing it Jordan, Nikil, and the Vapi team!
Cael Stewart
CTO, Chirpish
The @Vapi_AI team were an early partner to Groq and have a great quality of
product. Definitely check them out.
Mark Heaps
Chief-Evangelist, Groq
@Vapi_AI thank you for making my end to end journey easier by:

1. Optimizing streaming and colocating servers that shave off every possible
millisecond of latency

2. Customizing by allowing to connect to WebRTC stream through Web, iOS and
Python clients

3. Easy Scaling
Deepgram
@DeepgramAI
Building a high-quality production-ready voice agent on Vapi was incredibly easy
for me.

I notice new features being released almost daily, and the support provided is
exceptional. Keep up the excellent work!
Bob Wisely
Founder, Retexts
Unique features


EVERYTHING BUILT-IN TO MAKE YOUR VOICEBOT FEEL AS NATURAL, RESPONSIVE AND
RELIABLE AS A PERSON.

Turbo latency optimizations

Optimized GPU inference, intelligent caching, low-latency audio streaming.

Interruptions

A person knows when to stop speaking, your voicebot should too.

Proprietary endpointing model

With great speed comes great responsibility, your users shouldn’t be interrupted
when they pause.

Scale to 1M+ concurrent calls

Carefully designed Kubernetes cluster, with scalability, and high availability
built-in.

Function calling

Give your voicebot superpowers–booking appointments, data lookup, form-filling,
and so much more.

WebRTC streaming

Same protocol used by Google Meets and Microsoft Teams for the lowest latency
and highest fault tolerance.

Onprem provider deployments

Avoid the latency spikes and unreliability of shared infrastructure.

Multilingual support

Create voice agents in your users’ tongues–English, Spanish, German, Hindi,
Portuguese, and 100+ others.

Private internet backbone

Avoid network congestion on the public internet for your users around the world.


For developers


ALL THE POWER WITH ALL THE CUSTOMIZABILITY.

Plug in any model or voice, and talk to it everywhere.

Bring your own models.
Or, use any platform we support built-in: OpenAI, Groq, Mistral, OpenRouter,
Together, Anyscale.
Bring your own voices.
Or, use any platform we support built-in: ElevenLabs, PlayHT, LMNT, Deepgram,
Rime, OpenAI, Azure.
Bring your own backend.
Use the full power of function calling to make agents that can do anything.
Bring your own surface.
Use our client-side SDKs for Web, iOS, Flutter, React Native, and Python
(Hardware).
API Integration


LET’S GET YOU INTEGRATED RIGHT NOW.

Here's the code to get you started.


ReactJs


Node.js


Serverless


Python


PHP


Ruby


Go
1import Vapi from "@vapi-ai/web"; 2import { useState, useEffect } from "react";
3 4export const vapi = new Vapi("your-public-token"); // Get Public Token from
Dashboard > Accounts Page 5 6function VapiAssistant() { 7 const [callStatus,
setCallStatus] = useState("inactive"); 8 const start = async () => { 9
setCallStatus("loading"); 10 const response = vapi.start("your-assistant-id");
11 }; 12 const stop = () => { 13 setCallStatus("loading"); 14 vapi.stop(); 15 };
16 useEffect(() => { 17 vapi.on("call-start", () => setCallStatus("active")); 18
vapi.on("call-end", () => setCallStatus('inactive')); 19 20 return () =>
vapi.removeAllListeners(); 21 }, []) 22 return ( 23 <div> 24 {callStatus ===
"inactive" ? (<button onClick={start}>Start</button>) : null} 25 {callStatus ===
"loading" ? <i>Loading...</i> : null} 26 {callStatus === "active" ? (<button
onClick={stop}>Stop</button>) : null} 27 </div> 28 ); 29}
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Careers at VAPI


WE’RE AN ENGINEER-LED TEAM
MAKING COMPUTERS TALK LIKE PEOPLE.

We’ve been talking for thousands of years, and so we believe voice is the best
interface. We’re making it easy for anyone to add human-level conversational
voice experiences anywhere.

Backed by
Combinator
See all open roles


FIND US IN THE NEWS

YC-backed productivity app Superpowered pivots to become a voice API platform
for bots

Vapi Featured in Groq's AI Chip That Breaks Speed Records

Pricing
VAPI COSTS
$0.05 PER MINUTE.

Bring your own keys for the underlying providers like ElevenLabs and OpenAI, or
we can pass through the costs to you.
No hidden costs
Bring your own API keys
Contact Sales

Get $10 free credit



FREQUENTLY ASKED QUESTIONS

Couldn’t I build this myself and save money?

Sounds good — but I’m building a custom X for Y...

Is it going to be hard to set up?

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