How much does an AI chatbot actually cost?
Somewhere between nothing and several hundred a month, which is a useless answer. The useful one is that four different pricing models are sold under the same name, and only some of them get more expensive on the month your website does well.
· 10 min read
Ask how much an AI chatbot costs and you get a range so wide it tells you nothing: free to roughly five hundred dollars a month. Both ends are real. What decides where you land is not the brand you pick but which of four pricing models it uses — and the models behave very differently on a good month.
Every figure below was checked against each vendor's own site in October 2026. Pricing in this category changes often, so treat these as the shape of the deal rather than today's quote, and click through before you commit to anything.
The four pricing models
1. Per seat
You pay for each human on your team who uses the tool. This is help-desk pricing with AI bolted on, and it predates the AI entirely. It scales with your headcount, not your traffic — which is good if you are busy and bad if you are small, because you pay the same whether you had ten conversations or ten thousand.
2. Per resolution, or per outcome
You pay each time the AI actually resolves something. Intercom's Fin is the best-known example: it charges $0.99 per outcome, on top of seats that start at $29 per seat per month on the Essential plan and rise to $85 and $132 on the higher tiers. Voice outcomes are billed separately at $1.99.
The logic is genuinely fair — you pay for work done, not for capacity. The catch is arithmetic. At $0.99 a resolution, four hundred resolved conversations is roughly $396 a month before you count a single seat. If your site has a very good month, so does your invoice.
3. Per conversation, in pre-paid tiers
You buy a bucket of conversations or message credits up front and top up when you run out. Two current examples:
- Tidio's Lyro sits on top of a Tidio plan and is sold by conversation volume: roughly $39 a month for 50 conversations, $140 for 200, $350 for 500 and $700 for 1,000 — about $0.58 to $0.65 per conversation, with unlimited replies inside each one. Every Tidio plan, including the free one, includes 50 Lyro conversations.
- Chatbase meters message credits rather than conversations: Free gives 50 credits, Hobby is $40 a month for 700, Standard $150 for 4,000 and Pro $500 for 15,000.
Watch the unit. A credit is usually one message, and one conversation is several messages, so a 4,000-credit plan is nowhere near 4,000 conversations. Divide by your realistic messages-per-chat before you compare anything.
4. Flat
One price, whatever happens. The monthly floor is higher than a free tier and the ceiling is the same number, which is the entire point: a campaign that works does not produce a surprise invoice.
In the interest of being straight with you: this site sells a flat plan, so treat this section as an argument we have an interest in making. The arithmetic below is checkable either way.
What 400 conversations a month actually costs
A small business with decent traffic lands somewhere around here. Assuming four hundred chats, of which most reach a resolution, and one human seat:
| Model | Rough monthly cost | What moves it |
|---|---|---|
| Per resolution | $400–430 | Every extra resolved chat |
| Pre-paid tiers | $150–380 | Crossing into the next bucket |
| Per seat only | $29–132 per seat | Hiring |
| Flat | Unchanged | Nothing |
Those are estimates built on stated list prices and an assumed conversation mix, not quotes. Your resolution rate and your messages per chat will move them. The pattern, though, is stable: the metered models charge you most in the months you most want to grow.
The costs nobody puts on the pricing page
Your own time. A few hours of setup and content cleanup, and an hour a week reading transcripts for the first month. Real, and worth it.
Fixing your content. The bot answers from your pages, so bad pages mean bad answers. Most of the work in training a chatbot on your own content is tidying what you already published.
Annual lock-in. Headline prices are usually the annual rate. Monthly is commonly 20–30% more. Pay monthly until you are sure.
Seat creep. On per-seat tools, the second and third person who need access cost full price. A $29 tool is a $87 tool the moment three people log in.
A wrong answer. Hard to price, easy to underestimate. One confidently incorrect quote to a customer costs more than a month of any plan here.
What the free tiers are for
They are real and they are useful, for exactly one purpose: finding out whether the thing answers your customers' questions correctly before you pay anything. Fifty conversations is enough to learn that.
They are not a plan. Fifty conversations is one busy week for a site with traffic, and the usual experience is hitting the cap mid-month with a half-finished setup. Use the free tier as a test, then decide properly.
How to work out your own number
- Estimate your monthly chats. A rough rule: somewhere around 2–5% of visitors will open a chat if it is visible and quick. Use your real traffic, not your best month.
- Double it. Plan for the month the campaign works, not the quiet one.
- Price that number under each model, not the number you have today.
- Check the unit — conversation, message, credit or outcome. They are not the same and the difference is often 5×.
- Ask what happens at the cap. Does it stop answering, or does it keep billing? Both exist, and you want to know which before it happens.
If you are still deciding whether any of this beats a person in the chat window, the comparison with live chat is the other half of this question.
the short version
- Four models: per seat, per resolution, pre-paid tiers, flat. The model matters more than the price.
- Per-resolution billing is fair and expensive — roughly $400 at four hundred resolved chats.
- Check the unit. Credits are messages, not conversations, and the gap is often fivefold.
- Headline prices are usually annual. Monthly tends to cost 20–30% more.
- Price the busy month you are hoping for, not the quiet one you are having.