Last updated: July 19, 2026
TL;DR
- Customer.io is a data-driven outbound platform: journeys, segments, and campaigns across email, push, in-app, SMS, and now WhatsApp, priced by profiles from $100/month (Essentials, 5,000 profiles and 1M emails) up to Premium at $1,000/month.
- Invent runs both directions of the conversation: broadcasts and campaigns out, and an AI assistant that actually answers what customers send back, with a shared team inbox, from $29/month.
- The one-line difference: Customer.io sends; Invent sends and answers. Their "AI Agent" builds campaigns for the marketer; it does not talk to your customers.
- Pricing shapes differ fundamentally: Customer.io bills on your maximum profile count, deleted or not active, plus overages at $0.009 per extra profile. Invent bills usage: $29 includes $29 of credits, then pay for what you consume.
- Plenty of teams run both, Customer.io for heavy lifecycle marketing, Invent for conversations. If you want one platform for the whole loop, that is what Invent is for.
Customer.io and Invent are often shelved together because both "message customers." The shelf is wrong. One is an outbound engine that treats messaging as campaigns; the other treats messaging as conversations, with campaigns included. The dividing question is simple: when your customer hits reply, what happens? Everything below is verified against both companies' pages, July 2026.
What is Customer.io?
Customer.io describes itself as "the data-driven platform for personalized customer journeys across all channels, fueled by first-party data." It is a serious, well-regarded outbound stack: visual Journeys, Audiences and segmentation, a Design Studio, analytics, and integrations with the modern data stack, trusted by brands like Notion, Buffer, and IMAX. Channels cover email, push, in-app, SMS, and, as of its recent AI release, WhatsApp as a native channel.
Its AI is real but aimed at you, the marketer: an AI Agent that turns prompts into configured campaigns, builds segments from a description, translates messages, and optimizes send times. What Customer.io does not have is the other direction: no customer-facing chatbot, no support inbox, no two-way conversation handling. Messages go out; replies are not its product.
What is Invent?
Invent covers the loop. Outbound: broadcasts and campaigns over WhatsApp, email, and SMS, with contacts, segments, and segment actions your assistant keeps updated. Inbound: an AI assistant that answers customers on the website widget, WhatsApp, Instagram, Messenger, Telegram, SMS, and email, grounded in your own knowledge, with a shared team inbox, customer memory, automatic CSAT, and routing to the right teammate when a human should take over.
The structural differences:
- Two-way by design. The same platform that sends the campaign answers the reply, in the same customer record.
- Usage pricing, not profile pricing. $29/month includes $29 of credits; a free plan covers 1,000 contacts. Broadcasts are billed per delivered message, and you bring your own providers, keeping your sender reputation and rates.
- The support layer included. Inbox, CSAT, human handoff, white-label, SSO, from $29.
Customer.io vs Invent at a glance
Verified July 2026:
- Direction: Customer.io is outbound journeys and campaigns; replies are out of scope. Invent is campaigns plus an AI that answers what comes back.
- Pricing model: Customer.io bills by maximum profile count, Essentials from $100/month for 5,000 profiles and 1M emails, with extra profiles at $0.009 each and Premium from $1,000/month. Invent is usage-based from $0/$29.
- The profile meter's fine print: billing follows your account's maximum uniquely identified people and objects, and a profile counts even after you delete it within the cycle.
- AI: Customer.io's AI Agent configures campaigns for the marketer, with AI credits metered at $10 per 100K beyond samples. Invent's AI talks to customers and is included in the platform.
- Support surface: no inbox, chat widget, or CSAT on Customer.io. All included on Invent.
- Channels: Customer.io: email, push, in-app, SMS, WhatsApp. Invent: web chat, WhatsApp, Instagram, Messenger, Telegram, SMS, email, all two-way.
Customer.io and Invent compared: journeys out, versus conversations both ways.
The profile meter, explained
Customer.io's pricing follows the size of your audience, not your activity. Essentials starts at $100/month covering 5,000 profiles and a million monthly emails; growth is billed at $0.009 per additional profile, so a 20,000-profile list lands around $235/month whether those profiles heard from you or not. Premium, with managed deliverability, dedicated IPs, and HIPAA, starts at $1,000/month on an annual commitment, real money before the first send.
Two details from their own pricing fine print deserve attention. Billing is set by your account's maximum number of uniquely identified people and objects, and a profile you delete still counts within the cycle it existed. And the AI features carry their own meter: credits at $10 per 100K beyond included samples.
None of this is unusual for enterprise marketing platforms. It simply means your bill tracks how many people you could message. Invent's bill tracks what actually happens: conversations handled and broadcasts delivered, with $29 of usage included and no charge for the size of your list beyond generous plan limits.
Who answers the reply?
Here is the loop every campaign creates: you send, some customers convert quietly, and the rest write back, questions, objections, "does this work with X," "can I change my order." On an outbound-only platform, those replies scatter into a support tool that has never heard of the campaign, or into an inbox nobody staffs.
On Invent, the reply is the point. The same platform that sent the WhatsApp broadcast answers the response, from your knowledge base, in the customer's language, remembering their history, escalating to your team with context when it matters, and logging CSAT after. The campaign and the conversation are one record, not two systems.
If your operation is pure lifecycle marketing with replies handled elsewhere, Customer.io's depth is real. If replies are where your revenue actually closes, the answering half is not optional.
Switching, or pairing
Some teams will rightly keep Customer.io for heavy lifecycle work and add Invent for conversations; the two are not mutually exclusive. For teams consolidating:
- Bring your contacts and segments. Your audience imports into Invent's contacts, with segments and segment actions your assistant maintains automatically.
- Rebuild your key campaigns as broadcasts. WhatsApp, email, and SMS campaigns, marketing and transactional, with your own providers keeping your sender reputation.
- Turn on the answering side. Ground the assistant in your knowledge, connect the channels, and the replies your campaigns generate start resolving themselves.
- Run a cycle in parallel. Compare not just delivery metrics but what happened after: replies answered, conversations converted, CSAT.
Prefer it done for you? Book a free 30-minute migration call and we set it up: contacts, campaigns, channels, branding, no charge.
What you give up either way
Both directions, plainly. Choosing Invent means giving up Customer.io's deep journey orchestration, its data-pipeline integrations, push and in-app channels, and Premium's managed deliverability, genuine strengths for sophisticated lifecycle teams. Choosing Customer.io means giving up the entire inbound half, customer-facing AI, support inbox, CSAT, plus paying for audience size rather than activity, with the support stack still to be bought elsewhere.
Which should you choose in 2026?
- Choose Customer.io if you are a lifecycle marketing team with data-pipeline needs, push and in-app channels, and replies handled by a separate support operation you are happy with.
- Choose Invent if you want campaigns and the conversations they create in one platform, priced by usage from $29/month, with the AI answering your customers instead of just addressing them.
Comparing support-side tools instead? See Help Scout vs Invent or the AI chat automation roundup.
FAQs
What is Customer.io?
Customer.io is a data-driven marketing automation platform for outbound customer journeys: segmented campaigns across email, push, in-app, SMS, and WhatsApp, built on first-party data. Pricing starts at $100/month for 5,000 profiles (verified July 2026).
Does Customer.io have an AI chatbot?
No customer-facing one. Customer.io's AI Agent works for the marketer, turning prompts into configured campaigns, building segments, and optimizing send times, but it does not converse with your customers or handle replies. Invent's AI is the customer-facing kind.
How much does Customer.io cost?
Essentials starts at $100/month covering 5,000 profiles and 1M emails, with additional profiles at $0.009 each; Premium starts at $1,000/month billed annually. Billing follows your maximum profile count, and AI credits meter separately at $10 per 100K (verified July 2026).
Is Invent a good Customer.io alternative?
Yes, when you want both directions: broadcasts and campaigns over WhatsApp, email, and SMS, plus an AI assistant that answers replies across every channel, with a team inbox, CSAT, and white-label included from $29/month.
Can I use Customer.io and Invent together?
Yes, and some teams should: Customer.io for deep lifecycle orchestration, Invent for the conversational layer that answers what campaigns bring back. The overlap is broadcasts; the complement is everything conversational.
What does Invent charge for broadcasts?
Broadcasts are usage-based per delivered message, and you bring your own providers, keeping your sender reputation, phone numbers, and provider rates. The assistant, inbox, and platform run on the $29/month plan with $29 of usage included.
Related
- Best WhatsApp Broadcast Software for Business
- WhatsApp Business Broadcast: Complete Guide
- Help Scout vs Invent: Support AI Compared
Campaigns start conversations. Make sure something answers them.
