Orbari
Updated August 2026 · real numbers, no "book a call to find out"

How much does a custom AI agent system cost?

The straight answer most builders won't put on a page — with the honest math for deciding whether it's even worth it for your business.

The short answer, from 2026 market research: single-chatbot shops charge $3k–$15k. Boutique builders of full multi-agent systems — finding leads, following up, running content, reporting — run $10k–$50k for the build. Enterprise firms start around $150k. Within those bands, an honest builder prices YOUR figure from your own numbers — the hours leaking and what they cost — capped so you clearly profit in year one. Keeping a system running, checked, and current adds $1k–$5k a month across the market.

Why quotes vary so wildly

Because "AI agent" describes three different products. When you collect quotes, you're really comparing tiers:

TierTypical priceWhat you actually get
Single-bot shops$3k–$15kOne chatbot or workflow. Usually no quality control, no human approval step, no maintenance plan — it decays quietly.
Boutique multi-agent builders$10k–$50kA coordinated team of specialized agents with shared memory and human oversight, custom-built to one business. This is our tier.
Enterprise AI firms$150k+Department-scale systems for companies with procurement teams. Overkill below eight figures of revenue.

A $3,000 quote and a $30,000 quote aren't the same purchase at different prices — they're different purchases. The questions that expose the difference: does a second system check the AI's work? Does anything send without a human's yes? Who maintains it when the models change?

What the ongoing monthly actually buys

The retainer isn't "keeping the lights on." AI systems that act on your behalf need to stay accurate, safe, and current in a field that changes monthly. Concretely: 24/7 monitoring and failure response · quality-control review of every outbound send · model updates and migrations as providers change · tuning against your real results · a monthly report counting what actually ran. Unmaintained AI degrades. Maintained AI compounds.

The honest math: when it's worth it — and when it isn't

Ignore the hype in both directions and run the number:

Two more honesty checks when you're shopping: nobody can guarantee results (be wary of anyone who does), and you should own the system — your accounts, your data, everything it learns — with no lock-in.

Run your own number in 20 seconds

We put a free calculator on one page — three sliders, no email required to see your figure. It uses the same capped, disclosed formula above.

Run your numbers →

The ranges above are 2026 market research, not our rate card — we price each build from the buyer's own numbers, capped at half of first-year savings. Your exact figure comes from a free roadmap — yours to keep whether we work together or not.

Orbari · Houston, TX · orbari.studio · Related: AI agents vs hiring an ops person · custom agents vs off-the-shelf AI tools