If you searched for the cheapest AI chatbot for your website, you have probably already found a page listing a dozen tools sorted by their lowest advertised price. Those lists are not wrong, but they answer the wrong question. The number that matters is not the lowest plan price; it is the lowest total you will pay for a chatbot that actually does the job for a year.
This article is about the gap between those two numbers, and how to close it before you enter a card.
The three ways cheap gets expensive
1. The plan is cheap because the allowance is tiny. A low monthly price usually buys a small monthly bundle of messages or conversations. A chatbot that works gets used, so the bundle runs out, and either the widget goes silent until next month or overage kicks in at a rate that was never on the pricing page's headline. Either outcome costs you more than a slightly higher flat plan would have.
2. The thing you need is one tier up. Removing the vendor badge, connecting your own domain, adding a second site, or exporting conversations often sit on the next plan. If you price the plan without them and then need them, you were never on the cheap plan at all.
3. The price is in someone else's currency. A plan billed in a foreign currency picks up a conversion fee from your card issuer and drifts with the exchange rate every month. Over a year that is a real percentage on top of the sticker. A plan priced and charged in your own currency costs exactly what it says.
What actually drives the price
Vendors are not pricing at random. The cost underneath a chatbot plan is model inference per message, storage and indexing per source, and whatever team tooling is bundled in. A plan can only be cheap by being tight on messages, tight on sources, or by leaving out the team features. None of that is a problem if you know which one you are getting.
The mistake is assuming a cheap plan is the same product with a smaller logo. It is usually the same product with a smaller ceiling, and the ceiling is the thing to check.
Use the free tier properly
Almost every vendor has a free tier. Treat it as the evaluation, not as the product.
Upload the one page or document that answers your most frequent questions. Then ask those questions the way a customer would type them, not the way your team describes them. Read the answers. If they are grounded and specific, the product works on your content and a paid plan is a safe purchase. If they are vague or wrong, no amount of plan-shopping fixes that; you have learned something more useful than a price.
Cortexvia's free plan is built for this. It puts a real chatbot on a real page with no card, and the limits are published rather than discovered.
Work out your real requirement
You need three numbers and a yes-or-no.
- Daily messages. Count last week's repetitive questions from email and chat, multiply by roughly seven for what a visible widget attracts, divide by seven for a daily figure. Pick a plan with headroom above that.
- Sources. List the pages and files you would add. Check source count and file size limits against the list.
- Chatbots. One site, one chatbot, usually. Two products or two audiences may want two.
- Badge. Do you need the vendor badge gone on day one? If yes, price the tier that removes it.
With those in hand, the cheapest plan is simply the lowest-priced one that clears all four. That is a five-minute comparison instead of an afternoon of tabs.
Watch for the conversion tax
This deserves its own section because it is invisible on every pricing page. If your business runs in one currency and the vendor bills in another, three things happen: your card issuer adds a foreign transaction fee, the charged amount changes monthly with the exchange rate, and refunds come back at a different rate than you paid. None of this shows up until the statement.
Look for a vendor that prices in your currency and charges the displayed amount. Cortexvia shows local prices for over ninety currencies, and the price shown at checkout is the price charged, with no conversion added afterwards. The mechanics are written up plainly on the pricing page.
Six questions before you buy
- What exactly happens when I exceed the message allowance: overage, or a pause until next period?
- Which tier removes the vendor badge?
- Can I add a custom domain or a second website, and at what tier?
- Is the price shown the price charged in my currency?
- Does the plan auto-renew, and what happens to the chatbot if I stop paying?
- Can I export my conversations and leave?
A vendor that answers all six on its pricing page is not hiding the total. A vendor that makes you email sales for any of them is.
The honest recommendation
Do not buy on the headline price. Launch on a free tier, measure a week of real questions, then buy the lowest flat plan in your own currency whose limits you will not hit next month, with the badge situation you can live with. For most small sites that is the entry paid plan, and it is cheaper than the cheap plan by the third month.
The entry plans of Cortexvia, Chatbase, Tidio, Intercom, and Crisp are laid out side by side, with sources and dates, on the cheapest AI chatbot comparison page.
Frequently asked questions
Is the cheapest plan ever the right choice? Yes, for a low-traffic site with one or two source documents where the badge does not matter. That describes many personal and portfolio sites, and the free plan covers most of them at no cost.
How do I compare a per-conversation plan with a flat plan? Estimate your monthly conversations, add thirty percent for growth, and price the per-conversation plan at that volume including overage. Compare that figure with the flat plan, not the two headline prices.
What is the most common regret? Buying a plan that bills in a foreign currency for a badge-free widget, then discovering the badge removal was a separate charge. Ask questions two and four first.
