CommunicationOS vs Trengo
Stop counting every customer conversation
Trengo charges overage fees when customers message you back after seven days. We charge per connected account.
Conversations
Trengo meters
€299/mo paid annually
Trengo entry price
Accounts
We meter
None
Our conversation cap
Who each one is for
Two products, two different jobs
Buy Trengo if this is you
European ecommerce stores that send WhatsApp marketing broadcasts need Trengo. Their team provides local Dutch support and sets up your WhatsApp Business API profile.
WhatsApp Business API onboarding for European retail
Broadcast campaigns to a customer list
Hosted help centre on your own domain
Support in Dutch and European business hours
Buy CommunicationOS if this is you
Trading desks and distributed teams with multi-year client chats belong on CommunicationOS. You keep the message archive across the networks you connect, without conversation caps.
Where Trengo costs more
Conversations reset after a seven day window, so a returning customer bills again
Extra conversations cost €15 per 100 annually, €18 per 100 monthly
Every conversation their AI touches adds €0.25 to €0.30
Users past the plan allowance cost €25 to €50 each per month
The arithmetic
A fifteen person desk, costed
15 people handling 20,000 customer conversations over twelve months, paid annually.
Trengo Pro
20 users and 18,000 conversations a year included
Pro plan
€5,988
€499 × 12
2,000 conversations over the allowance
€300
20,000 − 18,000 = 2,000, so 20 blocks of 100 × €15
Twelve months
€6,288
CommunicationOS Team
10 connected accounts, unlimited people, unlimited conversations
Team plan, paid monthly
$948
$79 × 12
Conversations over any allowance
$0
there is no allowance
Twelve months
$948
€6,288 on Trengo Pro against $948 on Team. Paid annually our side is one $790 invoice for the year.
The same year on Trengo Boost costs more than Pro
€3,588 plan, plus 5 extra users at €25 × 12 = €1,500, plus 14,000 extra conversations as 140 blocks × €15 = €2,100
€7,188
If Trengo's AI handles 8,000 of those conversations, the annual surcharge adds 8,000 × €0.25 = €2,000 on top of the €6,288.
Trengo figures read from their public pricing page in August 2026. Our figures come from our pricing page.
Feature by feature
The whole table, including where they win
| Capability | CommunicationOS | Trengo |
|---|---|---|
| Entry price | $39/mo | €299/mo |
| Conversation limit | Unlimited | 6,000 per year |
| Cost per extra conversation | $0 | €18 per 100 |
| Teammates | Unlimited, free | €30 to €50 each |
| History retained | Forever, indexed | Platform default |
| Voice note transcription | Every channel | No |
| Group chat indexing | Yes | No |
| Personal WhatsApp numbers | Yes | Business API only |
| Signal and Discord | Yes | No |
| Writes in your voice | PersonaLearn | No |
| Open source SDK | MIT, five languages | REST only |
| MCP server | Yes | No |
| Self-hosted option | Enterprise | No |
| Export ceiling | 1 GB, 25 GB on Scale | CSV of tickets |
| Conversation window | No such counter | Resets after 7 days |
| AI surcharge per conversation | $0 | €0.25 to €0.30 |
| Users included | Unlimited | 10 on Boost, 20 on Pro |
| Extra user price | $0 | €25 to €50 each |
| Broadcast campaigns | No | Add-on |
| Hosted help centre | No | Yes, custom domain |
| Voice calling | Voice channel included | Add-on |
| Phone support | Shared channel on Scale | Pro and above |
| Mandatory 2FA | Yes | Not on Boost |
| Custom channel work | SDK on every plan | Pro and above |
The straight answer
Sometimes Trengo is the better buy
Choose Trengo if
You need a hosted help centre and WhatsApp marketing broadcast campaigns.
You want Dutch or European support working inside your local business hours.
Your shop only uses WhatsApp, email, live chat, SMS and Instagram.
You want an inbox built specifically for mid-market European retail teams.
Your message volume fits inside 18,000 yearly conversations on the Pro plan.
If two or more of these describe your team, buy Trengo. We would rather you spend the money well than churn out of here in four months.
Choose CommunicationOS if
Every plan includes unlimited conversations and unlimited team members.
Nineteen networks in scope, with ten live today including Telegram, Signal, Discord and SMS.
Search your indexed history for the life of the account, with a 1 GB export on Starter and Team and 25 GB on Scale.
No €0.25 to €0.30 surcharge on the conversations your AI touches.
Add teammates at no extra cost instead of paying €25 to €50 per seat.
Eight design partners run on this in private beta, among them Antwerp diamond trading houses and Lebara. Ongoing relationships across many networks, indexed and searchable.
Moving over
Bring the archive with you
We import your tickets, contacts, tags and message bodies directly from Trengo. What comes across stays indexed for the life of the account and searchable from day one.
Import from Trengo
You request the export
Trengo gives you your data. Tickets, contacts, tags and message bodies.
We ingest it in one pass
One automated run, no per-record work on your side, no downtime on the old desk.
Threads get stitched back together
Identity resolution merges the same person across networks into one history.
Everything stays indexed
Imported history is searchable for the life of the account and counts towards your indexed storage.
import_trengo_2026-08-22 • twelve platforms supported
Questions
Trengo, answered
Something missing? Ask us and we will put the answer on this page.
Ask a questionHow does Trengo count a conversation?
Trengo defines a conversation as any reply to a message within a seven day window. Once seven days pass, a new reply from that same customer starts another billable conversation. If you exceed your annual allowance, extra conversations cost €15 to €18 per 100.
How much does Trengo charge for AI?
Trengo adds a surcharge of €0.25 on annual plans or €0.30 on monthly plans for every conversation that touches their AI. We include spam filtering, thread summaries and draft replies on our standard plans without per-message fees.
Which channels does Trengo support compared to CommunicationOS?
Trengo supports email, WhatsApp, Instagram, Facebook Messenger, SMS, voice and live chat. CommunicationOS covers nineteen networks and adds Telegram, Signal, Discord, Slack, X, iMessage, Reddit, TikTok, Teams, LinkedIn, WeChat, LINE and Viber. Ten of the nineteen are live today, five run in beta and four are queued, and the channels page lists which is which.
What do extra seats cost on Trengo?
Trengo includes 10 users on Boost and 20 on Pro. Adding another user costs €25 to €30 a month on Boost, or €40 to €50 a month on Pro. CommunicationOS includes unlimited team seats on every plan.
Leave the meter behind
Unlimited conversations, unlimited teammates, and a Trengo import that starts the day you connect.