Not everyone wants another app
Many people would rather send a WhatsApp message or make a phone call than install and learn a new app.
Creators, communities, ed-tech & brands
A personal AI assistant, on WhatsApp and phone
Asha is a ready-made, open-topic assistant you can put on your WhatsApp number or phone line: plans, ideas, studies, writing, translations or just a chat. Each person can shape her name, tone and language, and she can look up today’s facts on the web.
WhatsApp, calls and web chatEach person shapes the personaFree to build and test
The problem
Why build a voice and WhatsApp assistant
An assistant people actually use has to live where they already are, speak the way they speak and know what’s happening today.
One tone doesn’t fit everyone
A study buddy, a fitness coach and a friendly helper need different styles, and each person wants it their way.
Answers must be current
Weather, news, prices and train timings change every day. A model’s memory doesn’t.
Building it yourself takes months
Voice, WhatsApp, memory, language switching and safety settings are a lot of plumbing to build and run.
Example, not a benchmark
A coaching brand offers students a WhatsApp study buddy. A student types “be my physics tutor and explain in Hinglish”, and the assistant keeps that style for that student only.
How it works
Live in 5 steps
Install the sample
Agents → Start from a sample → Personal assistant. It comes with a chat journey and a call journey.
Rehearse in the Test lab
Try “call yourself Riya”, “call me Nitish”, “be more formal”, “remember I like cricket”, then “reset persona”.
Put it on WhatsApp
Activate the chat journey on your WhatsApp Business number. Add keywords if the number also runs other journeys.
Route a phone number
Point an Exotel number at the call journey so people can talk to it by voice.
Shape and review
Rename it, change its voice, turn web lookups on or off, set allowed or blocked sites, and read transcripts.
Sample conversation
Hear how the agent talks
Voice call with the sample assistant “Asha”. Illustrative transcript; your agent uses your business name, script and data.
Caller rings the assistant’s number
- Customer
Hi Asha, weekend pe Delhi mein mausam kaisa rahega?
- System
Web lookup → weekend forecast · sources kept
- AI agent
Weekend pe Delhi mein din mein garmi aur shaam ko halki hawa rahegi. Source WhatsApp pe bhej doon?
- Customer
Haan. Aur ab se mujhe Nitish bulana, aur thoda short mein jawab dena.
- AI agent
Done, Nitish! Ab se chhote jawab. Aur kuch?
- Customer
Yaad rakhna mujhe cricket pasand hai. Weekend ke liye kuch plan batao.
- AI agent
Noted! Shaam ko doston ke saath box-cricket turf book kar sakte ho, ya match dekhne ka plan. Paas ke turf dhoondhun?
Name, style and “likes cricket” remembered for this caller only
The journey
What happens, step by step
Every box is a step you can edit in the journey builder.
Integrations
Works with the tools you already use
- WhatsApp Business Platform
- Exotel
- Your own API
Anything else connects through your own API or a webhook.
What’s included
Built for this job
Talks about anything
General knowledge, advice, planning, writing, studies, translation and casual chat.
Each person shapes it
“Call yourself Riya”, “call me Nitish”, “be more formal”, “talk like a fitness coach”.
Remembers small facts
Up to 20 small facts per person, such as “I like cricket”, never shared between people.
Switches language and length
Hinglish, only Hindi, or short answers, whenever the person asks.
Looks things up
Today’s weather, news, prices or train timings from the web, with sources when asked.
Voice calls
A natural voice on phone calls, using the same persona the person set on WhatsApp.
“Who are you?” and reset
It describes its current persona, and “reset persona” starts fresh.
Add your own tools
Connect your own APIs so the assistant can look up your data too.
Pricing
Pay for what you use, from a prepaid wallet
You pay per AI message, per connected call minute and per web lookup, all from the same wallet.
- Free to buildAgents, journeys and every Test lab rehearsal cost ₹0. You pay only once real customers are talking to your agent.
- Prepaid ₹ walletRecharge online and usage draws the wallet down. Every recharge comes with a GST invoice.
- Pay per useAI calls are billed per call, for the minutes actually connected. WhatsApp messages are charged by Meta’s message category.
- Plans are optionalFor steady volume, a monthly plan can include call minutes and AI messages. Rates are shown on your Billing page before you go live.
What can the assistant talk about?
Almost anything: general knowledge, advice, planning, writing, studies, translation or casual chat. It is careful with maths, dates and facts, and says so when it isn’t sure.
Is each person’s memory private?
Yes. What one person asks it to remember is kept for that person only and never shared with anyone else. Saying “reset persona” starts fresh.
Can it look things up on the web?
With web lookups on, it checks current facts such as weather, news, prices and timings, and shares its sources. You can limit it to allowed sites or block sites.
Can I give it my brand’s name and voice?
Yes. Change the default name, persona, greeting and voice. Each person can still adjust it in their own chat.
Does it work on phone calls?
Yes. Route an Exotel number to the call journey and people can talk to it by voice in Hindi or English.
How is it billed?
From the same prepaid wallet: AI messages, connected call minutes and web lookups are charged per use.
More ways to use waca.ai
Your process is a little different?
Describe what you want to automate and how you handle it today. A person on our team replies on WhatsApp within one working day.
Contact us now
Tell us a little about your business. A person on our team reads every enquiry and replies on WhatsApp within one working day.
What happens next
- A person reads itNot an auto-responder. Someone on our team reviews your note.
- We WhatsApp you within 1 working dayWith a suggested first journey for your channels, languages and tools.
- You rehearse it for freeTry it in the Test lab with your own scenarios before paying anything.
Prefer to explore first? Create a free workspace →