respond.io is a team inbox for many channels, priced by the contacts you talk to each month, with AI agents from its Growth plan. Syniria includes its AI agent in every plan from Starter: it answers, books the appointment, takes the order and keeps the customer record, and your WhatsApp campaigns go out from the same workspace.
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Syniria answers every message, then does the work that follows, in one workspace your team shares.
Built in, with no separate booking tool to pay for: services, staff, weekly schedules, buffers and booking rules. Customers book in the chat or on a booking page you link from your website, then reschedule or cancel by link.
The agent looks up live prices, options, stock and photos, then turns the chat into an order your team tracks to the end.
One contact across WhatsApp, Instagram, Messenger and your website, with notes, tags, stages and follow-up tasks for your team.
Send approved templates to the people you choose, now or on a schedule. Opt-outs are respected, and replies come back to the inbox.
Owner, Manager and Agent roles, assigned conversations, and a takeover that pauses the AI until the chat is handed back.
Your agent answers on WhatsApp, Instagram, Messenger and your own website, for businesses worldwide, clinics, salons and stores alike, with no waitlist.
What each does, as of .
| Topic | respond.io | Syniria |
|---|---|---|
| Price | Starter $99, Growth $199 and Advanced $349 a month billed monthly, or $79, $159 and $279 a month billed yearly. Growth and Advanced include 1,000 monthly active contacts; more cost extra. | Connect $19, Starter $49, Growth $149 and Advanced $299 a month, with a 7-day free trial of every feature and no card. |
| AI agent | Included from Growth, with AI credits that start at 10,000 a month; past them, $15 per 1,000, up to twice the allowance. | In every plan from Starter, with 1,000, 4,000 or 9,000 message credits a month, and on Connect with credits you buy: 1 credit is 1 AI reply, product photos included, and credits come in packs of 100 credits for $5, 450 for $20 or 1,000 for $40. |
| How you’re billed | By monthly active contacts: each person you talk to in a month counts once, however many messages. | By AI replies: 1 credit is 1 completed AI reply, and your team’s own replies use none. |
| Team seats | 5 users on Starter and 10 on Growth and Advanced; extra users $15, $25 or $30 a month. | Owner, Manager and Agent roles, with unlimited team members and no fee per user. |
| Channels | WhatsApp, Messenger, Instagram, TikTok (beta), Telegram, LINE, Viber, WeChat, website chat, email and SMS, with calls on Advanced. | WhatsApp, Instagram, Messenger and a chat widget on your own website: 1, 3 or 5 channels by plan. |
| Keep the WhatsApp Business app | Supported (coexistence). | Supported (coexistence): you switch it on yourself when you connect, with no request to support. A reply sent from the app pauses the AI in that chat, so customers never get two answers. |
| Appointments | Through a separate tool you connect, Cal.com, Calendly or Google Calendar, each with its own account and plan. | Built in and included from Growth, and in the free trial, with no separate booking tool to pay for: services, staff, weekly schedules, buffers and booking rules. The agent books in the chat, customers book, reschedule or cancel on your booking page, and your business gets an email each time. |
| Catalog and orders | Meta product catalogs, and e-commerce integrations such as WooCommerce. | The agent looks up your live catalog with options, stock and photos, and turns a chat into an order your team tracks: on every plan from Starter, and on Connect with credits you buy. |
| Campaigns | Broadcasts only from Growth ($199 a month), and not in its free trial. | Unlimited on every paid plan, from Connect at $19, with no Syniria fee per message: approved WhatsApp templates sent to the people you choose, now or on a schedule, with opt-outs and delivery results. |
| WhatsApp message fees | Not included in any plan; you can top up WhatsApp credit on respond.io. | Meta bills your own WhatsApp account directly, at its own rates; Syniria adds no markup. |
| Developer tools | A developer API from Growth, and Model Context Protocol (MCP) support. | No public API yet; custom integrations on Enterprise. |
| Free trial | 7 days of Growth for 5 users and 1,000 contacts, without broadcasts; no card. | 7 days of every feature, with 100 message credits and up to 50 WhatsApp campaign messages, and no card. |
The rules both work within, and what switching takes.
respond.io prices by the people you talk to each month and includes its AI agents from Growth; Syniria prices by AI replies, with the agent in every plan from Starter, and a reply uses one credit even when it sends product photos. Which costs less depends on how many people write and how many replies each needs.
respond.io books through a separate tool you connect, with its own account and plan. Syniria’s booking engine comes with Growth and above, and with the free trial, so there’s nothing else to connect or pay for.
Since October 1, 2026, Meta charges for replies on WhatsApp Business Platform numbers after the first 1,000 a month per number, at its rate for the customer’s country, whichever platform sends them. respond.io’s plans don’t include them; with Syniria, Meta bills your own WhatsApp account directly, with no markup.
Syniria sets no monthly limit on campaign messages on any paid plan, and the free trial includes 50. One campaign reaches up to 10,000 people, and Meta’s daily sending limits for your number apply whichever platform sends it.
Switch off respond.io’s AI agents and workflows for the number, or disconnect it there, so customers never get two answers, then connect the number in Syniria. If you use the WhatsApp Business app, you keep it on the same number. Start a free trial to try it first.
Know what your agent can do and how it fits your business.
Talk to the teamSyniria’s AI agent comes with every plan from Starter, at $49 a month, and does the work after the reply: it drafts orders from your live catalog, and on Growth and above it books appointments in Syniria’s built-in booking engine, with no separate booking tool. Every plan has Owner, Manager and Agent roles, with no fee per user, and WhatsApp campaigns are unlimited on every paid plan.
Syniria starts at $19 a month with Connect, with unlimited team members and WhatsApp campaigns at 0% markup, or $49 with the AI agent included. respond.io’s AI agents start on its Growth plan, at $199 a month billed monthly for 1,000 contacts. At $149, Syniria Growth also includes the built-in booking engine. Meta’s WhatsApp fees come on top with both.
Yes. Syniria supports Meta’s coexistence, and you switch it on yourself when you connect; Meta checks the number during setup. A reply you send from the app pauses the AI in that chat, so customers never get two answers.
No. Booking is built in: services, staff, schedules, booking rules and a booking page, included from Growth and in the free trial. The agent books in the chat, and customers can reschedule or cancel by link.
Yes. Campaigns are unlimited on every paid plan, from Connect at $19, with no Syniria fee per message, and the free trial includes up to 50 campaign messages. Meta bills your own WhatsApp account for each delivered message.
respond.io’s side of this page, as these sources stood on . respond.io changes its prices and plans often; check them before you decide.
Meta’s own AI agent, free to start where Meta offers it, against Syniria’s agent and the work that follows the reply.
CheckedA WhatsApp-first platform whose AI agents are priced on their own, against Syniria, where the AI agent comes with every plan from Starter.
CheckedInstagram and TikTok growth automations, priced by contacts, against Syniria’s AI agent for customer service, bookings and orders.
CheckedA WhatsApp marketing platform with its AI agent as an add-on, against Syniria’s AI agent on every channel and every plan from Starter.
CheckedStart with a 7-day trial, then choose the plan that fits.