Buyer guide
How much does it cost to build an AI agent?
Updated 2026-10-22
Short answer: An AI agent is software that reads a request, decides what to do, and takes actions in your tools, for example updating a CRM or drafting replies. A narrow agent for one task can be built for a few thousand dollars; an agent that works across several systems with approvals and monitoring often costs tens of thousands. Monthly AI usage is extra.
Why prices vary so much
The hard part is not the AI model. It is connecting the agent safely to your systems, deciding what it is allowed to do on its own, and testing it on real cases until it is reliable.
Rough ranges (not survey data)
- A proof of concept on one task, with a person approving each action: often a few thousand dollars.
- A production agent for one team, connected to two or three systems, with logs and error alerts: often $10k to $50k.
- Agents in regulated settings (finance, health, legal) need extra review and usually cost more.
Running costs
AI providers charge per amount of text processed (tokens). OpenAI and Anthropic publish their current prices. Costs depend heavily on volume, so ask for an estimate based on your real numbers, such as emails or tickets per day.
Questions to ask an agency
- What exactly can the agent do without a person approving it?
- How will we know when it makes a mistake?
- Which accounts and keys does it use, and who owns them?
- How will you measure that it is working?
What we see in this directory
325 agencies here are listed under custom AI apps and agents. Of the 980 agencies in this directory, 148 publish a starting price on their website. Most quote per project after a short discovery call.
Agencies to look at
- Automation Consulting Services (United States)
- Atomic Actions (United States)
- Goodspeed (United Kingdom)
- Makeitfuture (Romania)
- Connex Digital (United States)
Browse further
Questions
Is an AI agent the same as a chatbot?
Not quite. A chatbot answers questions. An agent also takes actions, such as creating a ticket or updating a record.
Can an agent run without a human?
It can, but most teams start with a person approving actions, then remove approvals for low-risk tasks once the agent has proven reliable.
Who owns the agent after it is built?
Agree in the contract that you own the code, prompts and accounts. Ask for documentation and a handover.
Sources
Vendor prices change. Check the source page for current figures. Ranges marked "rough" are guidance from how agencies describe their work, not survey results.