How Much Does an AI Chatbot for Your Website Cost in 2026?

An AI chatbot for your website costs $0 on a free plan, and from $8 to a few hundred dollars a month on a paid standalone chatbot. If the AI comes inside a help desk priced per seat and per resolution, the bill for the same traffic can run from about $80 to over $3,000 a month. What you actually pay depends less on the headline price and more on how the tool bills: by reply, by credit, by seat or by resolved conversation.

I build ChatBento, one of the cheaper standalone options, so weigh my view accordingly. To keep this useful, every competitor price below comes from the vendor's own pricing page with the date it was checked, and the worked example shows where the expensive tools are worth it.

The five ways AI chatbots are billed

Here is what sits behind each row.

Free plans

Several tools have a plan that never expires, but what "free" includes varies a lot. These were checked October 23, 2026 unless noted:

• Chatling: 200 AI credits a month.
• Botpress: 100 conversations, no top-ups.
• Wonderchat: about 10 resolutions a month.
• Tidio: 50 Lyro AI conversations, given once, not monthly.
• Crisp: a free plan with no AI credits at all.
• DocsBot: 100 AI credits a month, for personal use.
• ChatBento: 50 AI messages a month, 1 chatbot, up to 50 pages, with a "Powered by ChatBento" link.

A free plan works for a site that gets a handful of questions a week. I covered the trade-offs in what "free" actually gets you.

Flat monthly with a reply cap

You pay a fixed price for a set number of AI replies. ChatBento is $8 a month for 2,000 messages, $30 for 10,000 and $100 for 40,000. SiteGPT is $59 a month for 4,000 messages, $129 for 10,000 and $429 for 40,000, or $39, $79 and $259 billed yearly (checked October 23, 2026). The cost is easy to predict; the risk is outgrowing the cap mid-month.

Credits

You buy a monthly pool, and each AI reply spends credits. Chatbase is $40 a month for 700 message credits, $150 for 4,000 and $500 for 15,000 (checked October 24, 2026). Chatling is $25, $75 or $295 a month, and DocsBot $49, $149 or $499 (checked October 23, 2026). The catch is that one reply doesn't always cost one credit. Chatling's pricing page shows replies costing from half a credit to 25 credits depending on the AI model.

Per seat

Help desks charge for each person who answers chats, and usually meter the AI separately. Intercom Essential is $19 per seat a month billed yearly for new customers (list price $29), and Expert is $132. Zendesk Suite Team, its first plan with live chat, is $55 per agent a month billed yearly. LiveChat starts at $19 per user a month billed yearly (all checked October 23, 2026).

Per resolution

You pay each time the AI settles a conversation. Intercom's Fin AI Agent is $0.99 per outcome. HubSpot's Customer Agent is $0.50 per resolution but needs a Professional or Enterprise plan. Zendesk includes 5 automated resolutions per agent a month, then charges $1.50 each committed or $2.00 pay-as-you-go (checked October 23, 2026). I compared this model with flat fees in detail in Per-Resolution, Credits or Flat Fee?.

The costs that don't show on the headline price

Most surprise bills come from one of these:

1. The AI is sold separately. Tidio's Starter plan is $24.17 a month billed yearly, but monthly Lyro AI conversations need the separate Lyro AI Agent plan, from $32.50 a month billed yearly for 50 conversations. Freshchat charges $49 per 100 Freddy AI sessions on top of its per-agent price. Tawk.to's live chat is free, but AI Assist is an add-on from $29 a month (all checked October 23, 2026).
2. Seats multiply. A per-seat price looks small until four people need logins. Four Intercom Essential seats are $76 a month before a single AI answer.
3. Overage and top-ups. Chatbase auto-recharges at $40 per 1,000 extra credits (checked October 24, 2026). Botpress adds packs of 100 conversations automatically near the limit ($65 on Plus), and bills the AI model's usage on top. LiveChat sells extra AI resolutions at $49.50 per 50.
4. Branding removal. Removing "Powered by Chatbase" is $1,188 a year (checked October 24, 2026). Tawk.to charges $29 a month per property, Chatling $35 a month below its Scale plan, and SiteGPT from $39 a month billed yearly.
5. Bigger models cost more. On SiteGPT, a GPT-4.1 message uses 10 times the quota of a GPT-4.1-mini message. DocsBot charges more credits for larger models too.
6. Setup fees. HubSpot's Professional and Enterprise plans carry required one-time onboarding fees of $1,500 and $3,500 (checked October 23, 2026).
7. What happens at the cap. Wonderchat's FAQ says its chatbot stops responding at the credit limit. DocsBot shows visitors an error. ChatBento switches the widget to a contact form, so you still get the message, but you lose AI answers until the month resets or you upgrade. Know which one you're buying.

There is also your own time: writing the answers your site is missing, checking conversations, and replying to handoffs. That cost is the same whichever tool you pick, so it rarely decides the choice, but budget an afternoon for setup.

A worked example at three sizes

Three made-up but typical businesses. I assume each conversation has 3 AI replies, and that 60% of conversations end in a billable resolution or outcome for the tools that charge that way. Seats only change the bill on the help desks, where everyone who answers chats needs a login. Swap in your own numbers.

• Local service business: 100 chats a month, 300 AI replies, 1 person.
• Small online store: 600 chats a month, 1,800 AI replies, 2 people.
• Growing company: 2,500 chats a month, 7,500 AI replies, 4 people.

How each cell was worked out:

• ChatBento: Hobby covers 2,000 replies, so the small store fits, but with little headroom. If it has a busy season, Standard at $30 is the safer plan.
• Chatling: Starter's 1,750 credits are just short of 1,800, so the store needs Growth. If your chosen model costs more than one credit a reply, move up a tier.
• Chatbase: the store is Hobby ($40) plus two auto-recharges ($80), which is cheaper than Standard at $150. The growing company is Standard ($150) plus four recharges ($160), cheaper than Pro at $500.
• Crisp: sized by its estimate of about 90, 450 and 1,350 automated conversations a month on Mini, Essentials and Plus. 100 chats just outgrow Mini ($45). Crisp's extra credit prices aren't in my checked data, so the last cell is open-ended.
• Intercom: $19 per seat billed yearly, plus 60, 360 and 1,500 outcomes at $0.99.
• Zendesk: $55 per agent billed yearly, plus resolutions beyond the 5 per agent included, at $2.00 pay-as-you-go. With a commitment at $1.50, the three cells drop to about $138, $635 and $2,440.

Help desk prices are billed-yearly figures as the vendors show them; the rest are monthly prices.

Why the expensive column can still be the right one

The numbers make Intercom and Zendesk look costly, but they're selling a different product. You get a shared inbox where your team answers live, ticketing, help center, mobile apps, and an AI agent that works across email and messaging apps, not only your website. If four people already spend their day answering customers, the seats are paying for their workspace, and the AI is a smaller line on top.

A standalone chatbot like ChatBento does one job: it answers website visitors from your own pages and Q&As, captures leads, and emails you when someone needs a person. It has no live chat inbox and can't look up orders or take actions in other systems. If you need those, compare help desks with each other, not with a $30 widget. The alternatives pages lay out what each tool does that ChatBento doesn't.

How to estimate your own cost

1. Count your questions. Use a month of contact form submissions, support emails and calls about things your website already covers.
2. Convert to the vendor's unit. Replies, credits, conversations or outcomes. Multiply chats by replies per conversation if the tool counts replies.
3. Add every seat that would need a login.
4. Price your busiest month, not your average one. Flat plans hold steady until you cross a cap; per-resolution bills grow with every chat.
5. Add the extras: branding removal, AI add-ons, top-ups and setup fees.
6. Check what happens at the limit before you sign up.

Run the numbers for your site

The chatbot cost calculator does this math with your own volume. ChatBento's plans, from the free tier to Pro, are on the pricing page, and new accounts get a 14-day trial with 200 messages and no card.