The verdict in three sentences
An AI chatbot that qualifies leads and books meetings turns a passive brochure site into a lead engine, with +20 to +35% more contacts captured. Two paths compete: the custom build (EUR 8,000 to 30,000 + tokens) that integrates with your CRM and speaks your industry, or the SaaS widget (EUR 50 to 500/month), fast but generic. Custom pays off as soon as the chatbot moves your sales pipeline.
Custom vs SaaS widget: the 2026 comparison
A SaaS widget plugs in within days but stays limited by its configuration. A custom build knows your catalogue, your qualification rules and pushes leads straight into HubSpot or Pipedrive.
| Criterion | Custom chatbot | SaaS widget |
|---|---|---|
| Upfront cost | EUR 8,000 - 30,000 | EUR 0 - 2,000 |
| Monthly cost | EUR 150 - 800 (tokens) | EUR 50 - 500/mo |
| Timeline | 4 - 8 weeks | 3 - 10 days |
| Industry knowledge | Deep (RAG) | Generic |
| CRM integration | Native, two-way | Limited |
| Meeting booking | Custom (calendar) | Basic |
| Code ownership | You | Vendor |
What an AI chatbot really wins you
The gain is not just volume: the chatbot qualifies before handing off, which lifts the sales team's conversion rate.
| Metric | Before | With AI chatbot |
|---|---|---|
| Leads captured/month | 40 | 48 - 54 |
| Qualified leads | 22% | 35 - 45% |
| First-response time | 6 h | Instant |
| Meetings auto-booked | 0 | 8 - 15/mo |
| Cost per qualified lead | EUR 55 | EUR 32 - 40 |
Mini case study
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Sanne, marketing lead at an industrial software vendor in Amsterdam, gets 40 leads a month through a classic form, 22% qualified. She deploys a custom AI chatbot at EUR 18,000 plus EUR 400/month in tokens. The bot qualifies 24/7 and books meetings: volume rises to 52 leads with 40% qualified (about 21 qualified leads versus 9 before). At an average contract value of EUR 12,000 and a 15% close rate, those 12 extra qualified leads generate ~1.8 more deals/month, roughly EUR 21,600 in additional potential monthly revenue. The custom build pays back in under 2 months.
FAQ
Isn't a SaaS widget enough? For a simple FAQ, yes. As soon as you want to qualify by your own criteria, push into the CRM and talk about your products, custom avoids the limits and the subscriptions that climb with volume.
Can the chatbot book meetings? Yes, by connecting to your calendar (Google Calendar, Calendly, Microsoft 365) and your availability rules. It offers slots and confirms automatically, capturing 8 to 15 meetings a month on average.
How much do tokens cost? Between EUR 150 and 800 per month depending on traffic and conversation length. We cap the budget and optimize caching to avoid surprises.
Does it integrate with my CRM? Yes, natively with HubSpot, Pipedrive, Salesforce or Zoho. Every conversation creates or enriches a record with the qualification score.
How long until it is live? 4 to 8 weeks for a custom build: scoping, knowledge-base connection, CRM/calendar integration, testing and guardrails.
Let's scope your project. Share your lead volume, your CRM and your qualification criteria: we price a B2B AI chatbot from EUR 8,000 to 30,000 depending on integration. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
