Short answer
AI agent development cost depends on four things: how many steps of the process it covers, how many systems it integrates with (CRM, ERP, email), the state of the data and the monthly use of the model. You pay for a design and build project, then a monthly cost for usage and maintenance.
What drives the price of an AI agent?
| Criterion | Cheaper when… | More expensive when… |
|---|---|---|
| Process scope | It does one bounded task | It covers a whole process with many exceptions |
| Integrations | It reads and writes in one tool with an API | It talks to several systems, some without an API |
| Data | It is tidy and in one place | It needs cleaning or several sources joined |
| Risk of the decision | It proposes and a person decides | It acts in critical systems and needs more controls |
| Usage volume | A few runs a day | Thousands of documents or conversations a month |
What does an AI agent project include?
Process mapping
How it works today, who does what, how long it takes and what data it touches. With the MAPA method.
Design
What the agent does, what a person does, which systems it touches and which controls it has.
Prototype and build
A first version with real data, validated before the rest is built.
Testing and gradual launch
The agent works in parallel with the team and is compared with the baseline.
Support
Adjustments, maintenance and measurement after launch.
What are the monthly running costs?
On top of the project, an agent has recurring costs:
- Monthly
Model usage
Paid by volume processed. With a few runs a day it is usually a small part of the total cost.
- Monthly
Hosting
Servers and databases, in the EU if there is personal data.
- Ongoing
Maintenance
The systems it integrates with change, and so does the process. It needs reviewing.
How do you know whether an AI agent is worth it?
Do the maths before asking for a quote: the hours a month your team spends on the task, times their hourly cost, plus the cost of today’s errors. If the agent saves a meaningful share of that, it pays off. If the task takes two hours a month, it does not.
How I give the price
I do not publish prices because every process is different. I give it on a 30-minute call, with the scope in front of us, once I understand what you want to solve. To see the kind of agents I build, look at custom AI agents or AI agents for sales.
Frequently asked questions
How much does it cost to build an AI agent?
It depends on what is built. A commercial tool such as ChatGPT for business has a price per user. An agent built for your process is paid as a project, plus a monthly cost for usage and maintenance. The price is set by the scope, the integrations and the state of the data.
Is an off-the-shelf AI agent cheaper?
At first, yes. But generic tools adapt little to your process and systems, and you pay per user even if you only use part of it. An agent built for your case costs more up front and fits better. The decision depends on how standard your process is.
What are the monthly costs of an AI agent?
Model usage, hosting and maintenance. Model usage depends on volume: with a few runs a day it is usually low. Maintenance is needed because the systems it integrates with change.
Why don’t you publish prices?
Because two agents with the same name can have very different costs depending on the integrations and the data. I would rather give you a fixed price after understanding your process, on a call, than a range that does not help you decide.
This article was created with the help of AI and reviewed by José Galán. I take great care over every post and every translation, but the odd mistake can still slip through. If you find one, write to me: you will be helping me improve.
30-minute call
Tell me about the process and I will tell you whether it needs an agent.
In half an hour we look at the task you want to solve, the data it touches and whether an AI agent, a simple automation or leaving it as it is makes more sense. I give you the price on the call, with the scope in front of us.
Book the call