Introduction
If you are choosing an AI customer service agent for a small business in 2026, the decision comes down to four things: where your customers talk to you, whether the AI needs to take action or only answer, how you want to be billed, and whether a person can step in without the customer repeating themselves.
The short answer
Link AI is the best fit when you want one workspace for the agent, the inbox, the phone line and the customer record. Fin fits teams already on Intercom. Chatbase fits a website chatbot trained on your own content. respond.io fits a messaging inbox priced by active contacts. This guide explains each so you can pick without a sales call.
How to choose
•Channels. List where customers actually reach you: website chat, WhatsApp, Instagram, SMS, email, phone. An agent that covers only one forces you to run the others by hand.
•Action, not only answers. Can the agent book an appointment, take an order, collect a form, open a ticket or update your CRM? Answering questions deflects work. Taking action finishes it.
•Voice. If calls matter, check whether phone is native or a separate product, and what a minute costs.
•Billing model. Per resolution, per contact, per message credit and flat plans behave differently as you grow. Estimate your own volume before you compare.
•Human handoff. A person should be able to take over from the inbox and see everything said so far.
Side-by-side comparison
Competitor prices below were read from each vendor's public pricing page on October 17, 2026. Check the vendor's site before you decide, because plans change.
| Link AI | Fin (Intercom) | Chatbase | respond.io | |
|---|---|---|---|---|
| Starting price | $69/month (Starter); free 14-day trial | $0.99 per outcome | $32/month on yearly billing | $99/month on monthly billing |
| Billing model | Flat plans, unlimited contacts, usage in messages | Per outcome; Intercom seats $29 each | Plans with message credits | Plans by monthly active contacts |
| Channels | Web chat, SMS, WhatsApp, Instagram, Messenger, email, Slack, phone | Email, chat, WhatsApp, SMS, Messenger, Instagram, Slack, voice | Chat, email, voice; Slack, WhatsApp, Messenger, Instagram integrations | Chat, email, WhatsApp, Instagram, Facebook, TikTok, calls |
| Phone / voice | Inbound and outbound from Growth ($199/month) | Fin Voice, custom pricing | Voice on Standard and Pro | Calls feature |
| Takes action | Bookings, orders with Stripe links, forms, tickets, CRM updates, calls | Procedures and handoffs | Actions and integrations | AI agents on Growth and above |
| Shared inbox for your team | Yes, with takeover | Via Intercom or your helpdesk | Helpdesk inbox on Standard and Pro | Yes, core product |
Best for each situation
•A small team that wants everything in one place: Link AI. Agents, inbox, phone, contacts, workflows and campaigns share one customer record, so a call, a WhatsApp thread and an order sit on the same profile.
•Already on Intercom or another helpdesk: Fin. It plugs into the helpdesk you have and bills per outcome.
•A chatbot on your website, trained on your docs: Chatbase. Lowest entry price of the four.
•A WhatsApp and social inbox with a contact-based bill: respond.io.
If you want to see Link AI work before you decide, start a free 14-day trial (no card required) or read the detailed comparisons: Link AI vs Fin, Link AI vs Chatbase, Link AI vs respond.io.
