Search for the cost of an AI agent and you land on agency price lists: setup projects between 1,500 and 25,000 euros, plus ongoing retainers (example, another one). Those numbers are accurate, for what agencies build. They just answer the wrong question if you're a solo business owner who simply wants someone to take work off your plate.
Here's the math with no project to sell you, because I don't sell agency setups. I run my own AI employees and show others how to do the same.
What agency prices actually pay for
When an agency quotes 5,000 or 15,000 euros, you're essentially buying three things: the technical integration with your systems, the project management, and the responsibility that it works in the end. That has its price, and for a company with 50 people, its own software landscape, and no time, it can be the right path.
What you're not buying: the knowledge about your business. That lives in your head, and it has to come out either way, whether into an agency briefing or into a personnel file. Which is exactly why the most expensive line item of an AI employee isn't the money.
The honest cost breakdown for solo business owners
1. The subscription. My AI employees run on Claude. Depending on the tier, plans range from roughly 20 to 200 euros a month (as of August 2026, current prices at the provider). At the entry level, that covers everything: your first employee is built in the Claude app, no extra software, no server, no setup fee.
2. Your onboarding time. The real investment. Plan on about an hour for the start (load the package, run the onboarding interview, get the first result) and then a few feedback rounds over the first weeks until the cleanup work drops toward zero. It's the same effort you'd measure in weeks with a human employee, except here every correction lands permanently in the personnel file. How that works: Hiring an AI employee: the complete process.
3. Ongoing maintenance: almost nothing. No maintenance contract, no broken workflows after every update, no agency retainer. You give feedback when a result misses, and that's it. Why that's true with the employee approach and not with flow builders: Creating AI agents without code.
The comparison that puts the scale in perspective
Put those numbers next to what the same relief costs with humans: an assistant quickly runs 1,000 euros a month, a ghostwriter starts at 3,000 euros, a virtual assistant costs 35 to 80 euros per hour. An AI employee costs a fraction of that, and it never quits, so its knowledge never walks out the door.
That doesn't mean the human is the worse deal. It means the question "can I afford help?" is settled for the grunt-work tasks. Which tasks fit which option, I've broken down here: AI employee or virtual assistant.
The hidden costs nobody talks about
The math only gets fully honest with the line items that show up on no price list:
- The tool zoo. Subscribe to a separate AI tool for every task (one for copy, one for email, one for social media) and you end up paying more than a clean employee setup costs, with your knowledge scattered across five vendors.
- Abandoned attempts. The most expensive AI employee is the one you half-start three times. The cost isn't the subscription. It's the weekends that leave nothing behind. A structured path with a clear first step is worth real money for that reason alone.
- Wrongly sized projects. The 15,000-euro agency setup for a problem that a personnel file and two feedback rounds would have solved.
When the agency is still worth it
So this doesn't come off one-sided: as soon as you need deep integration with existing systems (ERP, inventory management, your own databases), lots of users, or the compliance requirements of a large corporation, a vendor with project responsibility makes sense. But then it's a software project, not an AI employee for your desk. Confusing the two is why the price ranges online are so absurdly far apart.
Bottom line
An AI employee for a solo business costs a subscription and your onboarding time, not an agency budget. The real investment is one focused hour to start and the discipline to give feedback instead of fixing things yourself. What you get in return isn't a toy. It's a task that's permanently off your plate.
What an AI employee is and how to start: Hiring an AI employee.
