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Bonnie vs Assistent
Two AI phone assistants for restaurants, two very different scopes. See how Bonnie and Assistent.ai compare on pricing, languages, integrations, multi-site coordination and setup.
Both Bonnie and Assistent.ai do the same core job: pick up the phone when your team can't. But the way they charge, the languages they speak, and the markets they're built for are fundamentally different. Which one fits depends mostly on one question: how many calls does your restaurant receive per month?
Quick comparison at a glance
| Feature | Bonnie | Assistent.ai |
|---|---|---|
| Pricing model | Fixed monthly subscription | Pay-per-call (€0.35 per call) |
| Cost at 300 calls/month | €135 (Starter) | ~€105 + €99 setup (first month ~€204) |
| Cost at 750 calls/month | €215 (Business) | ~€246 |
| Cost at 1,500 calls/month | €420 (Pro) | ~€390 |
| Free trial | 7 days, full access, no credit card | Test on request, via their team |
| Setup | Self-serve, under 30 minutes | Via their team, setup fee €99 |
| Languages | 20+ languages | German, French, English only |
| Dutch language support | Yes, from day one | Not yet available |
| Yes, included | Not available (SMS at €0.10/msg) | |
| Zenchef integration (NL/EN) | Yes, fully supported | German and French clients only |
| TheFork, Formitable, Guestplan | Yes | Not listed |
| Primary market | Netherlands, Europe | DACH (Germany, Austria, Switzerland) |
Assistent.ai pricing as of April 2026. Check assistent.ai for current rates.
The pricing model is the most important difference
Assistent.ai charges for each call, with no monthly base fee. The first 300 calls cost €0.35 each, calls 301 to 750 cost €0.32, and above 750 the rate drops to €0.28 per call. On top of that you pay a one-time setup fee of €99, and SMS notifications cost €0.10 each.
In theory this works well if your restaurant gets very few calls or you only want the assistant active occasionally. For a quiet venue with 100 calls per month the cost comes to around €35.
In practice though most restaurants get far more than 100 calls a month. A busy restaurant in a city centre can handle 400 to 800 calls per month. At 500 calls Assistent.ai will cost around €164. At 800 calls that rises to around €237. Both figures are higher than Bonnie's Business plan at €215 per month, which includes 1,000 call minutes with no per-call charge.
Cost breakdown by monthly call volume
| Monthly call volume | Assistent.ai cost | Bonnie plan | Bonnie cost |
|---|---|---|---|
| Up to 300 calls | ~€105 (excl. €99 setup) | Starter | €135/month |
| 300 to 750 calls | €105 to €246 | Business | €215/month |
| 750 to 1,500 calls | €246 to €390 | Business or Pro | €215 to €420/month |
| 1,500+ calls | €390+ | Pro | €420/month, no overages |
Assistent.ai costs are estimated based on their published per-call rates. The actual costs depend on how many calls you make. Bonnie's annual plans save you 10%.
Assistent.ai does not support Dutch yet
Assistent.ai currently works in German, French and English. Dutch is not supported. According to their own Zenchef help documentation the Zenchef integration also only works for German and French clients right now, with Dutch support planned as a future addition.
Bonnie, by contrast, handles over 20 languages including Dutch from day one. Whether a guest calls in Dutch, French, German or English they get a response in their own language without any extra setup.
The integrations show which market each product is built for
Assistent.ai integrates with reservation systems common in Germany and Austria, such as aleno, resmio, Gastro.Digital and Tably. Formitable is also on their list, which is a good sign for Dutch users.
Assistent.ai
Built for DACH
Integrations designed around German and Austrian reservation systems. Dutch market support is not complete yet.
Bonnie
Built for Europe
Zenchef, TheFork, Formitable, Guestplan, MICE Operations, TableFever, Soigne, WhatsApp and Zapier. Ready to use from day one.
So if your venue uses Zenchef or Guestplan and serves Dutch-speaking guests Bonnie is the ready option. Assistent.ai may well support your market in the future, but not fully today.
Self-serve in 30 minutes vs. a team that handles it for you
Assistent.ai sets up your assistant through their team. After you request a test their experts configure the system, and you go live once onboarding is complete. This process costs €99 once, and for operators who prefer a guided experience it works well.
The downside is speed and flexibility. Any change to your setup, like updated opening hours, a new menu or a different FAQ answer, also has to go through their team or requires learning their back-end.
With Bonnie the setup is entirely self-serve. Sign up, connect your reservation system, set your preferences and go live — all in under 30 minutes. Any changes afterwards happen immediately in the app, with no waiting and no setup fee.
When Assistent.ai is the right choice
Assistent.ai is a good fit for restaurants in Germany, Austria or Switzerland with a low to moderate call volume that prefer a team-led setup. The pay-per-call model also suits venues that want the assistant active only during peak hours or rest days, without committing to a monthly fee.
That said, it is not the right fit for restaurants in the Netherlands or Belgium, venues with Dutch-speaking guests or operators who need Zenchef or Guestplan integration today.
When Bonnie is the right choice
If your restaurant is in the Netherlands, Belgium or serves Dutch-speaking guests Bonnie is the ready option today. Moreover, if predictable pricing matters more than paying only for what you use Bonnie is the more transparent choice no matter where you operate.
What a missed call actually costs you
A missed call is on average a missed reservation for four people. At €45 per guest that works out to €180 per missed call. Ten missed calls a week, which is a realistic number for a busy restaurant, adds up to €7,200 per month in lost revenue.
Bonnie costs between €135 and €420 per month depending on your volume. As a result, if it captures even a fraction of those missed calls it pays for itself quickly.
For low-volume restaurants in the DACH region Assistent.ai's pay-per-call model is worth considering. For restaurants in the Netherlands, Belgium or any venue with Dutch-speaking guests however Bonnie is the ready-to-use option today.
A real-world scenario
A German restaurant switching from Assistent.ai
A restaurant in Berlin with around 600 incoming calls per month tries Assistent.ai. Setup goes smoothly through their team. But two problems surface quickly: guests calling in Dutch reach an assistant that responds in German or English, which feels jarring. And the Zenchef integration is not available for Dutch accounts yet, so reservations still need to be entered manually.
With Bonnie, the assistant picks up in the caller's language, pushes reservations directly into Zenchef, and sends a WhatsApp confirmation. At 600 calls per month, the monthly cost is €215 rather than the roughly €190 Assistent.ai would charge at that volume. The predictability and the language support make the difference.
Meet Bonnie. Your personal AI host
Forget about robotic voices, Bonnie has natural tone of voice, customisable accent and adapts to your customer needs.
Frequently asked questions
What is the difference between Bonnie and Assistent.ai?
Assistent.ai charges per call (from €0.35 each) and is built primarily for the German-speaking market. Languages are limited to German, French and English. Bonnie charges a flat monthly fee from €135, supports 20+ languages, includes WhatsApp follow-ups, and integrates with OpenTable, Zenchef, TheFork, Formitable, Guestplan and other systems used across Europe. Bonnie also supports restaurant groups with cross-location coordination, which Assistent.ai does not.
Does Bonnie integrate with OpenTable?
Yes. OpenTable is one of the most widely used reservation systems in DACH and across Europe, and Bonnie pushes reservations into it directly. Assistent.ai does not currently offer an OpenTable integration.
I'm migrating off Quandoo. Does Bonnie work with the alternatives?
Yes. With Quandoo winding down by the end of 2026, many DACH restaurants are switching to OpenTable, Zenchef, TheFork or Formitable. Bonnie integrates with all four. Whichever replacement you choose, Bonnie can answer your phone and push reservations into it from day one.
Is Bonnie's product fully in German?
Yes. The voice agent, WhatsApp messages, app and dashboard, and notification emails are all fully localised in German. A German restaurant runs Bonnie end-to-end in German, with no English fallbacks.
Which other reservation systems does Bonnie support?
OpenTable, Zenchef, TheFork, Formitable, Guestplan (DISH), MICE Operations, TableFever, Soigné, plus WhatsApp natively and Zapier for everything else. The list keeps growing.
Does Bonnie work for restaurant groups?
Yes. Bonnie handles cross-location overflow (when one site is full, it offers guests an alternative at another site of yours), delivers a consistent voice across every location, and gives you group-level visibility on call volumes, demand patterns and missed opportunities in one dashboard.
Does Bonnie work in Germany?
Yes. Bonnie is live with restaurants across the DACH region. The assistant speaks fluent German out of the box and integrates with the reservation systems most German venues use, including OpenTable.
Does Bonnie offer a free trial?
Yes. 7 days, full access, cancel at any time. No credit card needed to get started.
Does Bonnie work outside opening hours?
Yes. Day and night, weekends and public holidays. A guest calling at 10pm gets the same experience as a guest calling at noon.
How does Bonnie AI support partnership opportunities for distributors and resellers?
Bonnie supports both reselling and referral partnerships. Email partnerships@bonnie.co to start the conversation.
I am curious to hear how Bonnie sounds and works, can I try it somewhere?
Yes. Leave your number and Bonnie calls you straight back. You get to test the voice, ask questions and see how it handles your operation.
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