The real cost of an AI chatbot for a small business (spreadsheet included)

What an AI chatbot actually costs to run in 2026. Line by line, no vendor math, no hidden items.

When someone quotes "AI chatbot for $49/month," the useful follow-up is always: where's the rest of the bill? Most of the time there's a material line missing. Let's walk through what a realistic cost ledger looks like.

Fixed costs (whoever owns the site pays these)

Item	Monthly	One-time
Domain + email	$2	—
VPS hosting (small)	$6–20	—
SSL certificate	$0 (Let's Encrypt)	—
Small language model (self-hosted)	$0	—
Setup labor	—	$200–1,000+

Variable costs — the part that breaks "cheap chatbot" quotes

If the chatbot uses a cloud LLM API instead of a local model, pricing scales with traffic:

Workload	Rough monthly
300 chats/month × ~5k tokens	$12–25
1,500 chats/month	$60–125
5,000 chats/month (busy dentist)	$200–400

A $49/month "flat rate" that routes through an OpenAI API is cheap until volume arrives. At which point it stops being flat.

The hidden cost: your time

The line item nobody prices: the human hours to:

Review conversations for wrong answers
Update the FAQ when hours or services change
Follow up on leads the bot captures

Budget 1–2 hours a week for the first month, less after. An admin panel that lets non-technical owners make FAQ edits reduces that to minutes.

Local vs. cloud — when each wins

Cloud LLM API wins when:

Volume is low (under 500/month) and you don't want to manage a box
You need frontier-model quality on rare long-form questions
Data sensitivity isn't a concern

Local model wins when:

Volume is sustained (500+/month) and total cost matters
Privacy is a hard constraint (HIPAA, attorney-client, payment data)
You want predictable cost regardless of usage

Most small-business FAQ chatbots fit the "local wins" column. Your mileage will vary.

— Alex Kargin. More engineering writing at kargin-utkin.com.