Pricing guide 2026

What does a knowledge graph cost? (Custom AI 2026)

The short answer

A Knowledge Brain — a custom AI built on your verified expertise (knowledge graph) — starts at Domani AI from an indicative €16,900 to build plus from €490/month to run. A typical project with photo diagnosis and recommendations lands around €60,600 to build. Unlike a website these are bespoke projects — prices are starting points ("from"); the final scope is set in a call.

What determines the price

Four dimensions drive the price. A pure question-answer AI is always included — everything else you choose as needed:

Knowledge-base depth (foundation): from €16,900 – €64,900
Photo / image diagnosis: from €12,900
Recommendation logic: €6,900
Multilingual + country rules: €3,900
Agentic (autonomous actions): €12,900
Expert-verified accuracy: €9,900 · regulated from €24,900
Delivery: web widget €3,900 · own app from €14,900 · paywall €4,900

Why more than a chatbot?

An ordinary chatbot chats. A knowledge graph knows — because we curate, structure and safeguard your verified expertise so the AI only says what is actually true. That is hand-work on knowledge, not a template. The payoff: your expertise becomes a product that diagnoses, recommends and scales around the clock — often a revenue source in itself.

Example: a diagnosis AI (like Plant Doctor)

Here is how a typical project adds up (indicative build price, net):

Standard foundation (curated knowledge base): €36,900
Photo diagnosis (image recognition): €12,900
Recommendation logic: €6,900
Web widget for delivery: €3,900
Total to build: €60,600

plus operation from €890/month

Ongoing costs

Operation starts with the foundation: from €490/month (Compact), €890/month (Standard) or €1,490/month (Deep). Optional maintenance (€390/month), SLA (€490/month) and regular retraining (€290/month) on top. Usage-based features such as photo diagnosis are billed per request.

Is a website with a chatbot enough?

If you "only" need a website with a smart assistant, that is considerably cheaper — a fixed price from €4,900. The knowledge graph pays off when the AI should diagnose or recommend on real expertise.

What does an AI website cost? →

Frequently asked pricing questions

What does a knowledge graph or custom AI cost?

At Domani AI from €16,900 to build plus from €490/month to run. A typical project with diagnosis and recommendations lands around €60,600 to build. These are indicative prices — the final scope is set in a call.

Why is it more expensive than a chatbot?

Because a knowledge graph is bespoke: we curate and structure your verified expertise and safeguard it so the AI only says what is correct. That is hand-work, not a template — and it turns your knowledge into a product.

What does the photo-diagnosis feature cost?

Image / photo diagnosis starts from €12,900 to build, plus usage-based costs per request.

What does verified or regulated accuracy cost?

Expert-verified accuracy from €9,900, regulated (e.g. medical/financial) from €24,900 — highly project-dependent.

What are the ongoing costs?

Operation starts from €490/month (foundation). Optional maintenance €390/month, SLA €490/month and retraining €290/month.

What is the difference from an AI website?

A website with a chatbot is available at a fixed price from €4,900. A knowledge graph (custom knowledge AI) starts from €16,900 — it knows and decides on your expertise instead of just answering.

Build your Knowledge Brain

An indicative price in the configurator — we settle the final scope in a call.

Open the Knowledge Brain configurator