Phone-grade voice agents, in production today.
Inbound and outbound calls that talk naturally, follow your script, and finish the job — on phone lines, in the web browser and inside your app, with WhatsApp, SMS and email one tool call away.
Callaro · Sales agent on a call
Inbound enquiry · Real estate · 00:00
Call → WhatsApp
Brochure, price sheet and location sent on WhatsApp
Brochure, price sheet and location sent on WhatsAppActions executed
3/3- Lead qualified in CRM
- Brochure sent on WhatsApp
- Site visit booked · Sat 11:00
Pick an agent, enter your number, and Callaro will call you right now.
Demo calls only. By continuing you agree to receive a one-time call from Callaro.
Phone lines, web browsers and your app
The same voice agent — same instructions, knowledge, tools and memory — answers on a phone number, in the browser and inside your mobile app. Customers pick whatever is easiest; the agent always knows who they are and what happened before.
Telephony calls
Inbound and outbound calls on real phone numbers — your carrier or ours — including campaigns, transfers to your team and voicemail handling.
- Twilio, Plivo, Exotel, Ozonetel, Kookoo, MCube or your own telephony
- Inbound lines, outbound calls and bulk campaigns
- Warm transfer to your team with a summary
Web browser calls
Customers talk to the agent straight from your website — a call button on any page, or one tap from the chat widget. No phone number, no app download.
- Click-to-talk from any page or the chat widget
- Starts with the chat's context and the page they're on
- Embeddable on your site in minutes
In-app calls
Voice inside your iOS, Android, React Native or Flutter app. Users tap to talk, or your team and the AI ring their app with a call invite instead of a phone call.
- SDKs for iOS, Android, React Native and Flutter
- Signed-in users recognised — no re-verification
- Call invites that ring the app; missed invites are recorded
The phone problems Callaro solves
Leads wait hours for a callback and go cold.
The agent calls every new lead within seconds, 24/7, and qualifies them on the first call.
Callers hang up on phone menus and hold queues.
Customers just say why they're calling; the agent resolves it or transfers with a summary.
"I'll send you the details" never happens.
Brochures, pay links and confirmations go out on WhatsApp, SMS or email before the call ends.
Call outcomes never reach the CRM.
Transcript, collected data and analysis land in your systems by webhook after every call.
What the voice channel covers
Inbound
Answers instantly with context, routes and resolves without phone-tree menus.
Outbound
Places calls that follow your goal, script and guardrails end-to-end.
Bulk campaigns
Run outbound campaigns at scale with automated retries and cadences.
Transfers
Warm handoff to a human with a summary and full call context.
Real-world noise
Real telephonic audio with noise handling and echo cancellation.
Sends while it talks
Brochures, locations, pay links and confirmations go out on WhatsApp, SMS, RCS or email before the caller hangs up.
Browser & in-app voice
Talk from a web browser or inside your mobile app — started from a chat with its context, or from an invite that rings the app.
Tools, data and live events — inside the conversation, not after it
Most bots answer from a script and update your systems later. Callaro exchanges data with your systems while the customer is still talking — so nothing breaks when a journey crosses channels or something changes in real time.
Context in before the first word
Customer profile, CRM stage, open orders and the last conversation on any channel are loaded as the call or chat starts — the agent opens warm, never cold.
In-call tool calling
The agent calls your APIs, MCP servers and payment gateway mid-sentence — look up, book, update, charge — and uses the answer immediately.
Runtime context insertion
A payment, a CRM change or a chat message arrives while the call is live? It's inserted into the conversation within seconds, and the agent can say it aloud.
No broken hand-overs
Call to WhatsApp, chat to call, AI to human and back — each step carries the context forward, so customers never repeat themselves.
Engineered for speed
The agent is prepared before the call connects so the greeting is ready on the first moment of audio; prompts are cached, models chosen per use case, and turn-taking tuned for real phone lines.
- Hi, I'm calling about the 2BHK at Skyline Heights.
- Before the first word: CRM profile, last WhatsApp chat and open deal stage loaded into the agent's context.
- Welcome back, Priya — you asked about the east-facing units on WhatsApp yesterday. Two are still open.
- Tool call → inventory API: 2 units, live prices returned and used in the answer.
- Tool call → send WhatsApp: brochure, price sheet and site location delivered mid-call.
- Live event from your payment gateway: booking amount received.
- I can see your booking amount just came through — Unit 1204 is now reserved for you.
After the call: transcript, collected data and outcome to your CRM by webhook; open chats get a summary; a recap email lists what was sent.
Chat and call, inside your own app
Drop Callaro into your website and mobile apps. The same SDK gives your users rich chat and in-app voice calls — and lets your team, your systems or the AI ring the app instead of the phone.
- Rich chat with cards, slots, carts, forms and file upload — styled to your brand.
- Tap to talk: an in-app voice call that already knows the chat and the signed-in user.
- Ring the app: send a call invite that rings the user's app — accept to start a voice call; missed invites are recorded.
- Signed-in users recognised with your own token — no second verification.
- Push notifications so invites and replies reach users when the app is in the background.
Your App
Acme Bank Assistant
is calling you in the app…
“About your card replacement”
Ring the app · not the phone
EMI · due today
Pay nowBring your own telephony
Keep your numbers and carrier. Callaro connects to the providers you already use — no rip-and-replace.