Two AI chatbots, EU-hosted and GDPR-compliant. The difference is in price, how quickly you go live and how much work it takes to start. Below is an honest comparison.
Free · Paid from €20/mo · No setup fees · Live in 1 day
Alvoru is the fastest, cheapest way to put an AI chatbot on your own website: free to start, live in 1 day and automatically trained on your site — without manual question-and-answer flows. Watermelon is a broader omnichannel platform (chat, WhatsApp, email, social) that suits larger support teams wanting to bundle multiple channels. Looking purely for a strong website chatbot with a fixed, low rate? Then Alvoru is probably the better choice.
Facts about Watermelon come from public sources (July 2026) and may change — always check the current situation at watermelon.ai.
| Alvoru Our pick | Watermelon | |
|---|---|---|
| Free tier | Yes — free forever, 50 messages/mo, no credit card | Limited / trial version; the full AI chatbot is paid* |
| Entry-level paid price | From €20/mo (Starter €20 / Groei €50 / Pro €100) · 2 months free yearly | From €99/mo (Starter); €199 (Advanced), €399 (Business) — per their pricing page, July 2026* |
| Setup fees | None | Implementation projects may involve a one-time fee* |
| Going live | Usually within 1 day — 1 line of code or a 1-click extension | Typically longer; depends on channels and configuration |
| Training on your website | Automatic — reads in your site, updates daily | AI training also possible; often more manual setup and flows |
| Channels | Website chat (focus) | Broad — chat, WhatsApp, email, social, phone |
| Languages | English, Dutch, German | Multilingual |
| EU hosting & GDPR | Yes — EU servers, GDPR-compliant | Yes — EU-hosted, ISO 27001 |
| Personal support | Yes — you talk to the maker | Yes |
| Receive leads & photos | Yes (from Starter) | Depends on plan/integrations |
| Notice period | Cancelable monthly | Often an annual contract for the best rate* |
| Ideal for | Small businesses that want a strong website chatbot fast | Larger teams with omnichannel customer service |
* Watermelon prices and terms are indicative, based on publicly available information (July 2026) and may change. Alvoru prices come directly from our own price overview. This is our own comparison; Watermelon is a brand of its respective owner and is not affiliated with Alvoru.
* Based on public information (July 2026). Always check watermelon.ai for the most current prices and terms.
you want a strong AI chatbot on your website fast, want to test it for free, and are looking for a fixed, low rate without hassle.
you have a larger support team that wants to bundle WhatsApp, social and email into one inbox and is willing to pay more for it.
Start free with Alvoru. Within a day you'll see for yourself whether it fits your website — without a credit card or commitments.
Want to know more about the free version? Read about Alvoru's free AI chatbot or explore all industries.
Free · Paid from €20/mo · No setup fees · 14-day satisfaction guarantee