Trengo pricing in 2026: Boost vs Pro, how conversations are counted, and what AI adds

Trengo is priced for teams, not individuals: the cheapest plan already includes ten users. That makes it good value for a busy support desk and expensive for a small one. This guide, for teams weighing Trengo in October 2026, explains both plans, the three meters underneath them, and what two different teams would pay.

By Ritchie, ReplyKit · Published 25 October 2026 · 7 min read

How much does Trengo cost?

Trengo has two self-serve plans: Boost at €349 a month and Pro at €599 a month on monthly billing, or €299 and €499 a month on an annual contract. Enterprise is priced on request.

Prices in euros from Trengo's pricing page, checked October 2026. The page has a currency switcher for euros, dollars and pounds, but showed only euro amounts when we checked. Trengo offers a free trial; the page does not say how long it lasts. Annual billing saves up to 20%.

A useful way to read these numbers: Boost on monthly billing works out to about €0.70 per included conversation, and Pro to about €0.40. If your team handles far fewer conversations than the allowance, you are paying mainly for seats.

How does Trengo count a conversation?

In Trengo, a conversation starts when your team sends a message from the platform, either as first contact or as a reply to a customer, and lasts for a 7-day window. Anything after those 7 days with the same customer counts as a new conversation.

That definition has three practical effects:

1. Inbound messages you never answer do not count. The meter starts with your outbound message.
2. A long back-and-forth within a week is one conversation, however many messages it contains, across email, WhatsApp, Instagram or chat.
3. A slow sale spread over three weeks can count three times. Teams with long follow-up cycles burn through the allowance faster than their ticket count suggests.

Over the allowance, extra conversations are €18 per 100 on monthly billing and €15 per 100 on annual billing.

What does Trengo's AI cost?

Trengo's AI agent, HelpMate, is listed on both Boost and Pro. Conversations handled with AI carry a surcharge of €0.30 each on monthly billing or €0.25 on annual billing, on top of the plan.

• HelpMate suggests and sends responses automatically, according to Trengo's feature list.
• Third-party AI actions, which let the AI call external systems, are not supported on Boost; Pro and Enterprise have API actions.
• AI Journeys, for multi-step automated flows, is in beta, and Trengo says final pricing and packaging may change.
• WhatsApp, voice and SMS messages that carry an AI surcharge are billed at their own rates, which the pricing page does not list.

At €0.30, an AI agent that handles 1,000 conversations a month adds €300, close to the price of Boost itself. That is still cheaper than a person for most teams, but it belongs in the budget from day one.

What does WhatsApp cost on Trengo?

Trengo includes the official WhatsApp Business API integration on every plan. Meta's per-message fees are separate: the first 1,000 service messages per phone number each month are free, and Meta charges per message after that, as Trengo's page notes.

For Dutch customers, Meta's list rates as republished by Twilio are about $0.05 for each service or utility message beyond the free tier and about $0.1597 for a marketing template, among the highest in Europe. In the UK they are $0.022 and $0.0635. Broadcasting is an add-on on every Trengo plan, so campaign sending costs extra twice: the add-on and Meta's marketing fee. Our WhatsApp Business API pricing guide explains Meta's categories.

Trengo for a bike shop and a support desk

Both teams are hypothetical; Meta fees use US dollar list rates.

A bike shop chain in Utrecht: 6 staff, Boost, annual

Because annual allowances are pooled across the year (6,000 conversations), a quiet winter can offset a busy spring. Our extra-conversation line assumes the shop exceeds the year's total.

A 12-person support desk in Dublin: Boost or Pro, monthly

Boost would cost €349 plus 2 extra users at €30 = €409, with 500 conversations. Pro costs €599 with 20 users and 1,500 conversations. If the desk handles 1,200 conversations a month, Boost needs 700 extra at €18 per 100 = €126, bringing it to €535; add API actions for the AI and only Pro has them. The desk is close to break-even on price, so features decide it. Meta's fees for Irish customers, about $0.0171 per service message beyond the free 1,000, apply either way.

Should you choose Boost or Pro?

On price alone, Boost stays cheaper than Pro until its add-ons pass €250 a month, the gap between the two plans on monthly billing. A 10-person team crosses that line at about 1,890 conversations a month; a 12-person team at about 1,550. Below those volumes, choose Pro only if you need its features: API actions for the AI, phone support, or more than 20 users without paying per seat.

Is Trengo worth the price?

Trengo is worth it for support teams of five or more that handle email, WhatsApp, Instagram and chat together and want one shared inbox with automation. It is hard to justify for a business with one or two people answering, since the entry price already covers ten seats.

We make ReplyKit, a smaller competing product, so weigh this paragraph accordingly. If you are a two-person business mostly answering enquiries on WhatsApp and your website, ReplyKit's AI agent costs $29, $49 or $99 a month with replies included and no per-seat or Meta fees. It connects through a QR code that links your number as a device: unofficial, not the WhatsApp Business API, and not sanctioned by Meta, so a number can be restricted. Read will WhatsApp ban my number for automation? first. It has no email, Instagram or broadcast channel, so it cannot replace Trengo for a multi-channel desk. See ReplyKit vs Trengo, Trengo alternatives and Kommo pricing for other models, compare our plans, or start a free trial.

Frequently asked questions

ReplyKit is an independent product and is not affiliated with or endorsed by Meta or WhatsApp. Prices for other vendors are taken from their public pricing pages as checked in October 2026 and may change. This article is general guidance, not financial advice.