Meta Official Feature
Keep Your Number. Add AI Power.
Use your existing WhatsApp Business App number with AI agents — without losing chat history, changing your number, or forcing customers to adapt.
Need full WhatsApp setup? We're your WhatsApp Commerce Partner →AI agents used to mean losing your WhatsApp number
Switch to API = lose your number
Regular WhatsApp Business API requires a fresh number. Customers are confused. Chat history is gone. Trust built over years — wiped.
AI required API-only setup
Before Coexistence, AI agents couldn't run alongside the WhatsApp Business App. You had to choose: human or AI. Not both.
WhatsApp Business App + API. Same number. Simultaneously.
WhatsApp Coexistence is Meta's official feature that lets you run both WhatsApp Business App and WhatsApp Business API on the same number at the same time.
Messages are mirrored between your mobile app and the ChatAgent API. Your team works on mobile, AI works on API — same number, same conversations, zero disruption.
Regular WhatsApp API vs ChatAgent + Coexistence
One number. Two channels. Messages mirror in real time.
Customer messages hit your WhatsApp number and split instantly — your team sees them on mobile, ChatAgent AI replies via API. All in the same conversation thread.
Add Number to Meta Business Manager
Navigate to your Business Settings and add your existing WhatsApp number. This must happen before onboarding — takes under 2 minutes.
Connect via ChatAgent Dashboard
Go to Integration → WhatsApp → Add Account. Select "Keep WhatsApp Business App active (Coexistence)". Login with Facebook, scan QR code.
Choose Chat Sharing and Go Live
Decide whether to share existing chats with ChatAgent. Confirm and you're live. AI starts handling conversations instantly.
Built for every team that already lives in WhatsApp
Small Businesses & Agencies
AI Agent Builders
Enterprise & Multi-Branch Teams
Everything included with ChatAgent + Coexistence
AI Chat Agents
Custom-trained AI for lead generation, customer support, and sales — replies in seconds, 24/7.
Learn more →WhatsApp Coexistence
Connect your existing WhatsApp Business App number. No new number. No disruption.
Learn more →Message Mirroring
Chats sync between your mobile app and ChatAgent dashboard. Full context everywhere.
Learn more →Multi-Agent Support
AI and human agents work together on the same conversations. Seamless handovers.
Learn more →Embedded Signup
Self-onboard customers via Facebook Login SDK. No manual setup, no IT team required.
Learn more →Marketing Broadcasts
Marketing Message Optimization Lite supported. Reach customers with targeted campaigns.
Learn more →How businesses use Coexistence today
"We onboard 50+ clients per month. With Embedded Signup + Coexistence, clients keep their numbers and chat history. Setup takes 5 minutes, not 5 days."
"Customers message our WhatsApp number. AI handles 80% of inquiries instantly. When humans need to help, they see the full conversation on mobile."
"3 branches, 1 WhatsApp number. AI routes appointments, nurses handle follow-ups on mobile. No customer confusion, no number changes."
Mobile app messages stay free
Only API-routed messages follow WhatsApp API pricing. Messages sent and received through the WhatsApp Business App are free — always.
Unlimited — your team replies on mobile at no cost
Per-message pricing based on conversation type and region
See pricing page for full plan details
Limitations to know before you set up
WhatsApp Coexistence is powerful — but it has trade-offs. Here's what to plan for.
Fixed rate shared between mobile app and API. Sufficient for most businesses — upgrade to regular API for higher volume.
Voice and video calls not supported for coexistence numbers.
Message mirroring covers individual conversations only, not group chats.
Must open WhatsApp Business App at least once every 14 days to maintain the connection.
Companion devices limited to Android, iOS, macOS, and WhatsApp Web.
Phone number must be added to Meta Business Manager before onboarding begins.
Why ChatAgent stands out
Frequently Asked Questions
Will my customers know I'm using AI?
No. Messages appear the same. They message your number, the AI replies instantly — indistinguishable from a human agent.
Can I still use WhatsApp Business App on my phone?
Yes — that's the whole point. WhatsApp Coexistence runs both your WhatsApp Business App and ChatAgent API simultaneously on the same number.
What happens to my old chat history?
You can choose to share all existing chats with ChatAgent during setup. They sync to your ChatAgent dashboard automatically.
Is the 5 mps limit enough for high volume?
For most businesses, yes. The 5 messages-per-second limit is shared between the mobile app and API. If you need higher throughput, a regular WhatsApp Business API number removes this cap — but requires a new number.
Can I send marketing broadcast messages?
Yes — Marketing Message Optimization Lite is now supported for coexistence accounts.
See ChatAgent in Action
Book a demo tailored to your industry and see how WhatsApp can become your team's sales engine.
You'll Get:
Personalized Walkthrough
A session designed around your workflow and use case.
ROI Analysis
Discover potential cost savings and revenue growth instantly.
Implementation Roadmap
A clear, step-by-step plan to get started with ChatAgent.
Live Q&A
Ask our experts about strategy, setup, or integration — live.
Flexible Schedule
Pick a time that works for you. Our team's available across all time zones.
Request Your Demo
Fill out the form below and we will get back to you within 24 hours
Keep your number. Go live in 10 minutes.
Your existing WhatsApp number. Your existing customers. AI power added on top — zero disruption.
No credit card required