B12 is an AI website builder for sites, stores and web apps. Free plan, paid plans from $24/month, plus client tools. See features, pricing and integrations.
Researched and fact-checked by Bartu Cavusoglu · Updated October 26, 2026
B12 is a SaaS platform that builds websites, online stores, portfolios, blogs and web apps from a written prompt. It is aimed at people who want to get online without learning to code, hiring an agency or working through templates.
The company launched in 2016 and says more than 4 million sites have been built with it. Customers range from new and established businesses to creators, agencies and nonprofits.
Users describe what they want, from a few sentences to a detailed brief. B12 then generates a first draft in about two minutes, with pages, copy, layout, images, navigation and built-in features such as commerce, forms and email marketing where they fit.
From there, editing happens two ways. The AI Agent handles larger requests like adding a testimonials section or rewriting a page, while the visual editor handles small changes to headings, images, colors and spacing. Sites publish on a B12 subdomain or a custom domain.
The core is the AI builder and AI Agent, which keep working after launch to update pages, draft blog posts, emails and marketing copy, and add functionality. Paid plans add commerce, backends, traffic analytics and reporting, and third-party integrations.
On the top listed plan, B12 adds client intake, email marketing, a contact manager, contracts and eSignature, file uploads and a custom email address. Support options include live chat, email and scheduled calls, plus an Expert Marketplace for hiring vetted designers, copywriters and SEO specialists.
B12 is an AI website builder that creates websites, online stores, portfolios, blogs and web apps from a text prompt. Users then edit by chatting with an AI Agent or using a visual editor. The company says more than 4 million sites have been built with it.
B12 has a free plan at $0. The Website plan is $24/month and Website + Client Engagement is $78/month. New users can try either paid plan for $1 for the first 7 days.
Yes. The Free plan includes a b12sites.com subdomain, a mobile-responsive site, the visual editor with AI chat, team invites and 5 daily AI credits, up to 30 per month. No card is needed to start.
B12 says it takes about two minutes to go from a prompt to a complete first draft. After that, users refine the pages by chatting with the AI Agent or editing visually, then publish.
B12 lists integrations including Calendly, PayPal, Shopify, Ecwid, Google Tag Manager, Typeform, Jotform, Drift, WhatsApp, Eventbrite and OpenTable. It also supports custom HTML and script embeds.
Yes. The Website plan and above include a free custom domain, which is free for the first year. The Free plan uses a b12sites.com subdomain.
Yes. Customer Success is reachable by live chat, email or a scheduled call once a site is live. B12 also offers an Expert Marketplace for hiring designers, copywriters and SEO specialists, and a do-it-for-you package.
B12 targets small and professional-services businesses, with a free start, a $24/month plan for a custom-domain site and client tools such as intake, email marketing and eSignatures on the $78/month plan.