Mini Broker

AI ISA vs. hiring an ISA: the real cost comparison

An honest look at both — including when the human is the right call.

An ISA (inside sales agent) answers and qualifies your leads so you can stay in the field. It works — teams that hire good ISAs convert more leads. The question is whether the math works for you, and in 2026 there’s a real alternative: an AI assistant that does the follow-up portion of the job for a fraction of the cost.

What an ISA actually costs

The listing price is $1,200–$2,000/month base (part-time or offshore) to $3,000+ full-time, and most arrangements add a 5–10% commission split on closed deals. The hidden costs are bigger: weeks of training on your scripts, ongoing management, coverage gaps on nights and weekends — exactly when Zillow leads arrive — and turnover. ISA roles churn notoriously fast, and every departure resets your training investment to zero.

Side by side

When you should still hire the human

If you run a team doing serious volume, want live outbound calling(circle prospecting, expireds, FSBOs), or need someone who can improvise through genuinely novel conversations — hire an ISA, and give them an AI assistant so they never miss the 5-minute window either. The two aren’t enemies; the AI covers speed and consistency, the human covers judgment and the phone.

When the AI is the obvious call

If you’re a solo agent or a small team whose leads mostly arrive by email from Zillow, Realtor.com, or Facebook — the job you’d hire an ISA for is 80% speed-to-lead and disciplined follow-up (here’s why speed dominates). That portion automates beautifully, and you keep control: with Mini Broker, every message is drafted for you and nothing sends without your approval. Start with our free follow-up templates to see the cadence it runs.