Best AI Chatbot for Your Website (2026): 12 Tools Trained on Your Own Site, Compared

Short answer: for most small businesses, start with Chatling: it has a free plan, live chat on every plan, the longest model list, and the lowest cost per reply of the fixed-price plans we checked ($25 a month for 1,750 AI credits). If you want AI and human live chat in one inbox from a big brand, pick Tidio. For the most replies per dollar on a fixed plan with many channels, FastBots gives 2,000 replies for $39 on its default model. For a growing support team that wants helpdesk links and voice, Chatbase. For the best free plan with a human handoff, Wonderchat. Agencies that resell bots under their own brand should look at Stammer.ai. Updated November 9, 2026.

How we checked: every price, limit and per-credit cost below comes from the vendor's own pricing page or help docs, read on November 9, 2026. Model names are copied as each vendor prints them. We did not test these chatbots hands-on, so this guide compares published prices, limits and features, not answer quality. Where a vendor does not state something, we say "Not stated".

Chatling is a no-code chatbot builder with a visual flow builder and a live chat inbox. Its pricing page lists Free (200 AI credits, 1 agent, 500,000 knowledge base characters), Starter at $25 a month or $21 on annual billing (1,750 credits, 2 agents, 10 million characters), Growth at $75 (6,000 credits) and Scale at $295 (35,000 credits). Live chat is ticked on every plan, Free included; routing and an AI summary at handoff start on Growth. Extra credits are $10 per 1,000 a month.

Credits per reply run from 0.5 to 25 depending on the model, per its credits doc: DeepSeek 3.2 and Mistral Small 4 cost 0.5, GPT-6 Luna and Claude Haiku 5.5 cost 1, Claude Sonnet 5.5 costs 5. One catch on Free: the pricing page lists only GPT-6.1 Sol and GPT 5.1 as base models, and the credits doc prices both at 5 credits, so 200 free credits come to about 40 AI replies. Not for: teams that need a white-label product or deep helpdesk links on a small plan; Zendesk and HubSpot start on Growth, and removing the Chatling badge is a $35 add-on below Scale.

Tidio is a live chat and helpdesk suite, and Lyro is its AI agent, trained by scraping your website and FAQs. The pricing page shows a free plan with 50 billable conversations and your first 50 Lyro conversations free for life. Starter shows $24.17 a month for 100 billable conversations; the page offers 2 months free on annual billing, and we could not read a separate monthly figure. Lyro on its own starts at $32.50 a month for 50 AI conversations, in tiers up to 1,000. A Lyro conversation is any chat with at least one AI reply, so a chat with a dozen AI replies still counts once.

Not for: anyone who wants to choose the AI model, or high AI volume. There is no model picker on the pricing page, Lyro tiers stop at 1,000 conversations before you contact sales, and at $32.50 for 50 conversations the entry tier works out to 65 cents per AI conversation.

FastBots trains a bot on a site crawl, sitemaps and files, and can also draw on the model's own knowledge or live web data if you allow it. Its pricing page lists Essential at $39 a month ($33 annual) with 2 bots and 2,000 message credits, Business at $89 (5 bots, 5,000 credits), Premium at $199 (10,000 credits, branding removal) and Reseller at $399 (30,000 credits, white label for up to 5 brands). New accounts get a 14-day trial with 1 bot and 200 credits, no card; when it ends the bot goes offline until you upgrade.

The default model, GPT-6 Luna, and the other small models (GPT-4o mini, Claude 4.5 Haiku, Gemini 3.8 Flash) cost 1 credit per reply. GPT-4o, GPT-4.1, GPT-5.2 and Gemini 3.1 Pro cost 5, and Claude 5 Sonnet, Claude 4.5 Sonnet and GPT-6 Sol cost 10. Voice bots bill 50 credits a minute. Extra credits are $10 per 1,000 a month. Not for: a business that needs a person to take over chats on the entry plan. Live chat takeover, the Knowledge Assistant and email replies all start on Business at $89.

Chatbase began as a chatbot for your own data and now sells a full AI support platform with a helpdesk, actions and voice. Its pricing page has no free plan, only a 7-day trial. Hobby is $40 a month ($32 annual) for 700 message credits, Basic is $150 ($120) for 4,000 with the helpdesk inbox, voice and API, and Business is $500 ($400) for 15,000. Every plan includes one agent and 40 MB of training content; extra agents are $25 a month each, and auto-recharge credits are $40 per 1,000.

Its models comparison prices Auto, GPT-6 Luna and Claude 5.5 Haiku at 1 credit, GPT-6.1 Sol, Claude 5.5 Sonnet and Gemini 3.8 Flash at 2, GPT-5.5 at 4 and Claude 5.5 Opus at 5. Not for: a small site on a tight budget. Hobby's 700 credits work out to 5.7 cents a reply even on 1-credit models, against 2 cents or less on FastBots, DocsBot and Chatling, and handoff, Zendesk and Zapier only start at $150 a month. If you already use Chatbase and want out, see our Chatbase alternatives guide.

Wonderchat combines a site- and PDF-trained AI agent with a help desk and shared inbox. Its pricing page lists Free (50 AI replies a month, 2 seats, 100 webpages), Starter at $39 a month or $32.50 annual (500 AI replies, unlimited seats, Slack and WhatsApp), Basic at $149 or $125 (3,000 replies, voice chat, API) and Scale at $499 or $417 (10,000 replies). Live chat handover to your team is on every plan, Free included. A reply on a fast model costs 1 credit; frontier models can cost more and start on Basic.

Not for: anyone who needs a premium model on a small plan. Free and Starter are limited to fast models, and the pricing page does not say how many credits a frontier reply uses.

Weav sells AI customer support with a chatbot you train on your website, text, Q&A, files and video, plus one inbox for chat, email and third-party messages. Its pricing page lists Lite free (20 AI messages a month), Plus at $29 (500 messages, 2 teammates), Pro at $119 (5,000 messages, automatic retraining, API) and Max at $359 (20,000 messages), and offers 20% off on annual billing. Contextual handoff to a human is ticked from Plus.

Not for: a site with a lot of content. Training storage is 1 MB on Plus and 10 MB on Pro, the pricing page does not say which AI model answers, and the price of extra message bundles is not stated.

SiteGPT trains on your links, sitemaps, files, YouTube and cloud drives. Its pricing page lists Starter at $59 a month or $39 annual for 1 bot and up to 4,000 GPT-4.1-mini messages (or 400 GPT-4.1 messages), Growth at $129 or $79 (10,000 messages, 4 members, API) and Scale at $429 or $259 (40,000 messages, Zendesk AI agent). There is no free plan; the 7-day trial needs a card. From Growth, its iOS app gives you a live inbox with a push alert when a visitor asks for a human and one tap to take over.

Not for: anyone who wants model choice or cheap extras. It offers two OpenAI models only, and WhatsApp, branding removal and AI email replies are each separate add-ons at $39 to $59 a month.

DocsBot trains on sites, files and cloud sources, and from Standard on past tickets from helpdesks like Zendesk and Help Scout. Its pricing page lists Free (1 bot, 50 source pages, 100 AI credits a month), Personal at $49 a month (5,000 credits, Slack, WhatsApp, Messenger, Telegram), Standard at $149 (15,000 credits, escalation tickets, voice agents) and Business at $499 (60,000 credits, unbranded widget). Annual plans get two months free.

Credits scale with the model: GPT-6 Luna at 1x, GPT-5.4 mini at 3x, GPT-6.1 Terra at 5x, GPT-6.1 Sol at 10x and GPT-6 Astra at 50x, and AI actions and long requests can use more. If you connect your own OpenAI key, every model bills at 1x. Not for: a business that wants a person to take over live; the plans list escalation ticket creation and a Help Scout integration, not a live chat inbox.

CustomGPT.ai markets citations and "anti-hallucination" answers over large document sets in 1,400+ file formats. Its pricing page lists Standard at $99 a month ($89 annual) with 10 agents, 1,000 queries and 5,000 documents per agent, and Premium at $499 ($449) with 5,000 queries and branding removal. Both have a 7-day trial that needs a card. A normal chat message uses one query; actions like lead capture use more. When you hit the limit, agents stop answering.

Not for: live customer support or anyone price-sensitive per answer. Human handoff is not mentioned on the pricing page, model choice is Enterprise-only, and at $99 for 1,000 queries each answer costs about 10 cents.

Botpress is a builder for agents that follow workflows and call APIs, with its own helpdesk, Botpress Desk, or a connection to Zendesk or Intercom. Its pricing page counts conversations: any exchange with at least two user messages in a month. Free gives 100 conversations and 3 agents. Plus is $150 a month billed annually for 250 conversations and $25 of AI usage, with packs of 100 extra at $65; Team is $750 for 1,500. Its agent studio page says you can mix models across steps of a workflow.

Not for: a budget you need to cap. Botpress says you are never cut off: at 95% of quota it buys a 100-conversation pack automatically, and the FAQ says this cannot be turned off. It is also more setup than a paste-a-URL bot.

Landbot builds button-led chat flows with AI steps on the web, Messenger and WhatsApp. Its pricing page is in euros for EU buyers: Free has 100 chats a month and no AI chats, Starter is EUR 32 a month annual (EUR 40 monthly) for 500 chats and 100 AI chats, and Professional is EUR 80 (EUR 100) for 2,500 chats and 300 AI chats. Extra AI chats are EUR 0.10 each. A human takeover inbox is on every plan. Your own WhatsApp number starts on Professional as a EUR 100-a-month add-on.

Not for: open-ended questions across a big knowledge base. The AI allowance is small, and the page does not name the model; Landbot's strength is structured flows like lead capture and booking.

Stammer.ai is built for agencies that build chat and voice agents and resell them under their own brand. Its pricing page lists Standard at $49 a month (500 AI replies, 120 voice minutes, live chat and human handoff, no white label) and Pro White Label at $99 (5 chat and 5 voice agents, your own domain and logo, resell usage, bring your own LLM keys). Usage is priced per model: about $0.0009 a message on GPT-5.6 Luna and $0.01 on Claude 5 Sonnet, and overage on Standard is $0.01 a reply. Clients prepay into wallets at prices you set.

Two other white-label routes: FastBots' Reseller plan at $399 a month, and ChatBot.com, which lists a white-label widget only on its custom Enterprise plan. Not for: a single business with one website; you pay for reseller tooling you will not use.

The headline price tells you little. What you pay per answer is the plan price divided by the credits, multiplied by what your chosen model costs per reply. The same vendor can be 10 times cheaper or dearer depending on one dropdown. Here is the arithmetic on each entry plan, using the vendors' own published credit costs and the monthly-billing price.

Worked example for Chatling Starter: $25 buys 1,750 credits. On DeepSeek 3.2 at 0.5 credits a reply, that is 1,750 / 0.5 = 3,500 replies, or 140 replies per dollar. Switch to Claude Sonnet 5.5 at 5 credits and it is 1,750 / 5 = 350 replies, 14 per dollar. Same plan, ten times the cost per answer.

The cross-vendor gap is just as large for the same model family. A Claude Sonnet reply costs 2 credits on Chatbase (11.4 cents on Hobby), 5 on Chatling (7.1 cents on Starter) and 10 on FastBots (19.5 cents on Essential). On Stammer you pay the model's usage directly, about 1 cent a message on Claude 5 Sonnet. Top-ups differ too: $40 per 1,000 credits on Chatbase, $10 per 1,000 on FastBots and Chatling, and $49 per 5,000 on DocsBot.

To compare per-reply tools with per-conversation ones, count AI replies in a typical chat from your own logs. If a chat takes 4 AI replies (an assumption for illustration), Chatbase Hobby on a 1-credit model covers 175 chats at about 23 cents each, FastBots Essential covers 500 at about 8 cents, and Chatling Starter, also on a 1-credit model, covers about 437 at under 6 cents. Tidio's Lyro charges 65 cents per AI conversation on its entry tier, and Botpress Plus about 60 cents per conversation, but neither cares how many replies it takes.

They do not learn from conversations on their own. None of the vendors here documents a bot that rewrites its own knowledge from chat transcripts. What they offer is a review loop where a person approves the fix:

• Chatbase: you revise an answer in the chat logs and it is saved as a Q&A source, per its response quality guide. "Sources suggestions" and training on Zendesk or Salesforce tickets (changelog) are on the $500 Business plan only.
• Chatling: a "Fine-tune this answer" button adds your corrected answer to the bot's FAQ sources, per its docs. Despite the name, it adds a source; it does not retrain a model.
• SiteGPT: "Incorrect? Modify bot's answer!" saves a custom response, and an unanswered-questions list shows gaps, per its first-week guide.
• DocsBot: you fix an answer through the Q&A feature, which lands in the bot's Q&A source, per its response quality doc.
• Wonderchat: unanswered questions go to a review inbox with a draft article, grouped by root cause, and you fix them with a click, per its homepage.
• FastBots: the Knowledge Assistant (Business plan and up) flags unknown questions so you can add answers, per its pricing page.
• Tidio: the Lyro page says Lyro "improves with every interaction", and the method it describes is to "review conversations, add missing knowledge".
• Botpress, CustomGPT.ai and Stammer.ai: we found no feature on the pages we read that turns past conversations into new answers.

Running out usually means silence. DocsBot says your bot "stops responding" at the credit limit, CustomGPT.ai says agents "stop responding to new queries", and Wonderchat says the agent can no longer respond until you top up. Chatbase sells an auto-recharge add-on to avoid this. Botpress goes the other way and buys more conversations automatically, with no off switch.

They only know what you give them. A bot answers from the pages and files you load, plus whatever general knowledge you allow (FastBots, for one, lets the model fall back on its own knowledge or live web data). If your refund policy is out of date on the site, the bot will repeat it. Schedule re-crawls (most tools only auto-refresh on mid or upper plans) and read a sample of chats every week.

• Tight budget, one website: Chatling Starter, or its free plan to try it.
• You want people and AI in the same inbox: Tidio, Wonderchat or Chatling, all with live chat from the free plan.
• High volume of simple questions: FastBots or DocsBot on their 1-credit default models.
• A support team with Zendesk, HubSpot or Salesforce: Chatbase Basic and up, or Botpress with Botpress Desk.
• Thousands of documents: CustomGPT.ai or DocsBot.
• Lead capture and booking flows, or WhatsApp: Landbot.
• You build bots for clients: Stammer.ai, or FastBots Reseller.

Related reading: Chatbase alternatives (2026): 12 AI support chatbots, compared by what you pay for.

What is the best AI chatbot for a small business website?

For most small businesses, Chatling: a free plan, live chat on every plan and 1,750 AI credits for $25 a month. Tidio suits teams that want AI and human live chat in one tool, and FastBots gives 2,000 replies for $39 a month on its default model.

Is there a free AI chatbot I can train on my website?

Yes. As of November 9, 2026, Chatling (200 AI credits a month), Wonderchat (50 AI replies), DocsBot (100 credits, 50 pages), Weav (20 AI messages), Botpress (100 conversations) and Tidio (50 lifetime Lyro conversations) have free plans. Chatbase, FastBots, SiteGPT and CustomGPT.ai offer trials only.

How much does an AI website chatbot cost per message?

It depends on the plan and the model. On entry plans, a reply on a cheap model costs about 0.7 cents on Chatling, 1 cent on DocsBot, 2 cents on FastBots and 5.7 cents on Chatbase. A Claude Sonnet-class reply costs 7 to 20 cents on the same plans.

Do AI chatbots learn from customer conversations automatically?

No. None of the tools we checked documents a bot that updates its own knowledge from transcripts. Chatbase, Chatling, SiteGPT and DocsBot let you correct an answer and save it as a Q&A source, and Wonderchat and FastBots flag unanswered questions for a person to fix.

Which website chatbot lets a human take over the chat?

Chatling, Wonderchat, Landbot and Tidio include live chat or human takeover on their free plans. Weav adds it from its $29 Plus plan, Stammer.ai from Standard, FastBots from Business ($89), SiteGPT from Growth and Chatbase from Basic ($150).

Which AI chatbot is best for agencies that resell to clients?

Stammer.ai is built for it: $99 a month for white label with your own domain and logo, and you set the prices clients pay for usage. FastBots offers a $399 Reseller plan for up to 5 brands, and ChatBot.com lists white label on Enterprise only.