Updated November 11, 2026. Competitor data taken the same day from their official pages and from wordpress.org.
Anyone shopping for a WordPress chatbot plugin today will find two kinds of product. Those that answer questions, and those that also do the work that comes after the answer: they book the appointment, prepare the quote, and tell you who is ready to buy. In this comparison we put side by side the five names that articles and AI assistants mention most often when people talk about chat on WordPress sites: Sabriel AI, AI Engine, Tidio, WPBot and Chatbase.
Let’s be upfront about it: Sabriel AI is built by us at Sabriel Agency. That is exactly why every figure about the other plugins comes from their official pages, with the date and links at the end of this article, so you can check everything yourself.
In short
- You want a WordPress chatbot plugin that books appointments, prepares PDF quotes and tells you who is ready to buy, with the data on your site and your own AI key: Sabriel AI.
- You are a developer looking for a complete AI framework, with many model providers and MCP tools: AI Engine.
- You have a team answering chats by hand and want AI as a first filter: Tidio.
- A menu bot with preset replies is enough, with AI as an extra: WPBot.
- You want a bot hosted outside WordPress that you can also use on other platforms: Chatbase.
How we compared the plugins
There is one yardstick for judging a WordPress chatbot plugin: what it does for the people who use it. Answering is no longer enough, so we looked at bookings, quotes, lead scoring, site knowledge and how up to date it stays, blog posts, WooCommerce products, multilingual sites, where the data lives, how the AI is paid for and what changes from one plan to the next.
Installs and reviews are not the yardstick: AI Engine, Tidio and WPBot have been on the market for years, since the field was almost empty, while Sabriel AI is new, built for today’s needs, and its users talk directly to the people who develop it.
Where a feature does not appear on the official pages we write “Not stated”: that does not necessarily mean it is missing, it means the vendor does not claim it.
Comparison table: WordPress chatbot plugin options side by side
Here are the differences that matter in a WordPress chatbot plugin, feature by feature.
WordPress chatbot plugin comparison. Pro = paid plans only. “Not stated” = the feature does not appear on the vendor’s official pages. Data checked on November 11, 2026 (sources at the end of the article).
Where Sabriel AI goes further than the others
Many a WordPress chatbot plugin answers questions well. The difference is what happens right after the answer, when the visitor is ready to take a step.
It books appointments on its own calendar
Sabriel AI books, reschedules and cancels appointments right in the chat, using your opening hours, the site’s time zone and the capacity of each slot. No Calendly or Google Calendar needed: the calendar lives inside the plugin, with no outside accounts. The customer gets a confirmation email with a personal link to reschedule or cancel, and the same email address cannot hold two upcoming appointments. Tidio and Chatbase rely on Calendly or Cal.com, WPBot on Google Calendar. If you want a WordPress chatbot plugin that fills your calendar, this is the most visible difference.
It delivers PDF quotes while you do something else
When a customer asks for a price, the bot prepares a PDF quote with your logo, a sequential number, VAT, deposit and installments, your terms and a signature space. It only uses the prices in your price list and never makes one up. The files sit in a protected folder and open only through signed links; above a threshold you set, you get an alert. On the official pages of the other four, a PDF quote generated in the chat does not appear.
It tells you who is ready to buy, and why
Every conversation goes into the lead thermometer: hot, warm or cold, with the reason and the service discussed. Hot leads get follow-ups on day 3 and day 7, warm leads on day 6 and day 14, cold leads nothing. If the customer books or asks for a quote, the follow-ups stop on their own, and every email has an unsubscribe link. None of the other plugins in this comparison claims lead scoring of this kind.
It knows your whole site and keeps itself up to date
For a WordPress chatbot plugin, this is the part that decides the quality of the answers. The bot can read every page of your site, with no limit. You choose the most important pages and they get a summary you can edit; all the other pages enter the answer only when they are needed, so the bot stays light even on large sites. When you edit a page it re-reads it on its own, and when you remove it or set it back to draft it forgets it. There is no vector database to connect, as AI Engine requires in its Pro version, and nothing to re-upload by hand to an outside service. Blog posts and products are searched separately, at the moment the customer asks.
It shows the right article and the right product
A visitor asking for advice sees cards with the most relevant blog posts in the chat, picked by how well they match the customer’s words: someone looking for a laptop does not get the carbonara recipe. On WooCommerce stores the bot searches the catalog by size, color, price and variation, shows the sale price next to the full price and, when the customer asks about one specific product, reads its description to answer questions like “what is it made of?”. If you switch it on, the customer can also check the status of their order with the order number and email, read only, and never sees addresses or phone numbers.
It speaks the language of every page
Sabriel AI replies in whatever language the customer writes in, and its admin panel comes in nine languages. On multilingual sites built with Polylang or WPML the chat follows the language of the page: on English pages the form, the replies and the emails are in English, on Italian pages in Italian. For a WordPress chatbot plugin used by businesses that also sell abroad, this is the detail visitors notice first.
Your data stays yours, and so does the AI cost
With a native WordPress chatbot plugin like Sabriel AI, conversations, appointments and quotes stay in your WordPress database. The AI provider only receives what it needs to reply, and you use your own Gemini, OpenAI or Claude key: you pay the provider for what you use, with no per-conversation fees and no credit packs. You can have old data deleted automatically after the number of months you choose, and when you export your site from Tools → Export, customer data stays out of the file.
And much more under the hood
Then there are the things that do not fit in a table: voice messages, PDFs and images read in the chat, handoff to a person via WhatsApp, email or phone, a free website check for your visitors with a PDF report, nine security protections for WordPress, Mailchimp with double opt-in, conversation history you can recover from another device, cookieless statistics, full white label with more than 30 colors and nine fonts, and much more. The features are the same on every paid plan: only the number of sites changes. The full list of what this WordPress chatbot plugin does, item by item, is in the complete guide to Sabriel AI and in the documentation.
Sabriel AI or AI Engine?
AI Engine is an excellent tool, and that should be said clearly: it is a complete AI framework for WordPress, with around ten model providers, text and image generation, AI forms and an MCP server that lets Claude or ChatGPT manage the site. The features a bot needs to know your site, meaning embeddings with a vector database and function calling, are in the Pro version, from $59 a year for one site.
The real question is who it is for. AI Engine gives building blocks to people who know how to build. Sabriel AI arrives already built to sell: bookings, PDF quotes, the lead thermometer, blog posts by relevance and product search are ready to switch on, with no outside databases to connect and no functions to write. It also runs on PHP 7.4, while AI Engine requires PHP 8.1 or higher. If you are looking for an AI Engine alternative because you want a WordPress chatbot plugin that delivers results without turning you into a developer, Sabriel AI is the shortest route.
The Tidio alternative for AI without a meter
Tidio started as live chat for teams, more than as a WordPress chatbot plugin: one inbox for chat, email and social, agents, Flows automations and the Lyro AI agent, which learns from the site pages you point it to. It works well if you have people answering by hand. The plugin connects your site to the Tidio service, so you need a Tidio account and conversations go through it.
The pricing model is different. Plans count the conversations handled by human agents, and Lyro is paid in packs, from $32.50 a month for 50 AI conversations; the free plan includes 50 Lyro conversations once only. With Sabriel AI there is no meter: the bot answers everyone with your key and you only pay the AI provider for usage. It also books on its own built-in calendar, while Lyro sends a Calendly link. If you are looking for a Tidio alternative so the AI can work without you counting how many conversations are left, Sabriel AI is built exactly for that.
What about WPBot and Chatbase?
WPBot by QuantumCloud is a native WordPress chatbot plugin that also works without AI, with preset replies and menus; the free version includes basic OpenAI support, while Gemini, other models and site knowledge are in the Pro version. Features change with the plan: the WooCommerce module starts from the Professional plan, while multilingual and white label are only in Master, from $189 a year. Bookings go through Google Calendar.
Chatbase is an outside service more than a WordPress chatbot plugin: the bot is built and trained on the Chatbase website, and the WordPress plugin only adds the widget. On wordpress.org its page warns that the plugin has not been tested with the last three major WordPress releases. Its pricing page lists no free plan: it starts at $40 a month with 700 message credits, and removing “Powered by Chatbase” costs $99 a month.
What a WordPress chatbot plugin really costs
The license price is only half the bill. The other half is how the AI gets paid for.
- Sabriel AI: a free WordPress chatbot plugin on wordpress.org: Free $0 on unlimited sites. Paid plans have the same features and differ only in the number of sites: Pro (1 site) $12 a month, $89 a year or $229 one-time; Studio (5 sites) $25, $189 or $479; Agency (20 sites) $49, $369 or $949. You pay the AI provider with your own key.
- AI Engine: free on wordpress.org; Pro from $59 a year (1 site), $79 (5 sites) or $149 (20 sites), or lifetime from $299. AI with your own key.
- Tidio: Free plan with limits; Starter from $24.17 a month, Growth from $49.17, Plus from $300. Lyro on top, from $32.50 a month for 50 conversations.
- WPBot: free on wordpress.org; Pro from $39 a year (1 site) or $149 one-time (5 sites), up to Master at $189 a year or $369 one-time. AI with your own key.
- Chatbase: Hobby $40 a month, $32 with annual billing, with 700 credits; extra credits at $40 per 1,000.
With your own key, spending follows your real traffic, with no thresholds to watch. One honest tip about Gemini: the free tier is fine for testing, but for a public site with European visitors Google requires the paid plan. You can see the price per million tokens of every model in the Sabriel AI panel before you choose. To see what an AI assistant can do on your site before you pick a WordPress chatbot plugin, read our guide to the WordPress AI assistant too.
Who each plugin is right for
- Sabriel AI is right for you if your business runs on appointments, quotes or online sales, such as practices, salons, restaurants, craftspeople, agencies and WooCommerce stores, and you want a WordPress chatbot plugin that works like a team member, with the data on your site and predictable costs. It suits agencies too: white label, configuration you can export to other sites, licenses for 5 and 20 sites.
- AI Engine is right for you if you are a developer or have one, want to choose between many AI models, generate content and connect AI to your site through MCP.
- Tidio is right for you if you have agents answering by hand on chat, email and social and want AI as a first filter, and you are fine with an outside service and paying per conversation.
- WPBot is right for you if you need a menu bot with fixed replies, with AI as an extra and channels like Messenger or Telegram, which come with the Master plan.
- Chatbase is right for you if you want a hosted bot to use on several platforms, not just WordPress, and you are fine with a credit system.
Frequently asked questions about the WordPress chatbot plugin
What is the best WordPress chatbot plugin for a small business?
It depends on what it has to do. If it only needs to answer, several plugins will do. If it also has to book appointments, prepare PDF quotes and tell you who is ready to buy, Sabriel AI is the only one of the five that does all three out of the box, with the data on your site and your own AI key.
Is Sabriel AI a good Tidio alternative?
Yes, if you want AI that answers everyone without counting conversations and without outside accounts. If the heart of your work is a team of agents answering by hand on chat, email and social, Tidio is built for that.
Sabriel AI or AI Engine: which is better?
AI Engine is a framework for developers, with many models and MCP tools. Sabriel AI is a ready-made agent for businesses that sell: bookings, quotes, the lead thermometer and product search, with no outside databases to set up.
Is a free WordPress chatbot plugin enough?
To get started, yes: a free WordPress chatbot plugin like Sabriel AI, available on wordpress.org, replies in any language with your key, listens to voice messages, reads PDFs and images and hands the customer over to a person via WhatsApp, email or phone. Bookings, quotes, site knowledge and the lead thermometer are in the paid plans.
How much does the AI cost with your own key?
You pay the provider, that is Google, OpenAI or Anthropic, for what you use and at their prices. Sabriel AI adds no per-conversation fees and shows the price per million tokens of every model in the panel. Gemini has a free tier for testing; for a public site with European visitors Google requires the paid plan.
Where does my customers’ data go?
With Sabriel AI, conversations, appointments and quotes stay in your WordPress database, and the AI provider only receives what it needs to reply. With Tidio and Chatbase, conversations go through their services.
Does it work with WooCommerce and multilingual sites?
Yes. It searches products by size, color and price, reads the description of the product being asked about and, if you switch it on, shows order status with the order number and email. With Polylang or WPML the chat follows the language of each page.
Sources for competitor data
Pages checked on November 11, 2026. Prices and features can change: always check on the vendor’s website before you buy.
- AI Engine on wordpress.org
- AI Engine Pro, licenses and pricing
- Tidio on wordpress.org
- Tidio pricing
- Tidio, Lyro knowledge sources
- Tidio, Calendly integration
- WPBot on wordpress.org
- WPBot Pro pricing
- Chatbase pricing
- Chatbase on wordpress.org
- Chatbase, booking with Cal.com
Try Sabriel AI on your site
The best way to choose a WordPress chatbot plugin is to try it on your own site. Start with the free version, or let’s talk it through: we will help you work out whether it is the right plugin for your business and how to set it up properly.
