# B12: AI Website and Web App Builder

> B12 is an AI builder and vibe-coding platform for websites, online stores,
> and web apps. Describe what you want in plain language and B12's AI Agent
> builds it, backend included: user logins, databases, payments, and
> bookings, running on Supabase. Then keep improving it in chat or edit it
> yourself. Over 4 million websites have been built on B12. People use it for
> portfolios, personal projects, online stores, client portals, and
> lightweight apps, with built-in tools for SEO, scheduling, email marketing,
> and contracts.

## Key Pages

- [Homepage](https://www.b12.io/): Describe your idea and launch a website, store, or web app in minutes
- [AI Website Builder](https://www.b12.io/ai-website-builder/): Generate a complete, professional website with AI
- [AI Website Prompt Gallery](https://www.b12.io/ai-website-prompt-gallery/): Browse and remix AI-generated websites, stores, and apps
- [Business website templates](https://www.b12.io/ai-website-prompt-gallery/business/): Business website templates for consultants, law firms, agencies and accountants
- [Personal website templates](https://www.b12.io/ai-website-prompt-gallery/personal/): Personal website templates for résumés, blogs, writers, musicians and link-in-bio pages
- [HVAC and home service website templates](https://www.b12.io/ai-website-prompt-gallery/home-services/): HVAC, plumbing, cleaning, landscaping and handyman website templates
- [Event website templates](https://www.b12.io/ai-website-prompt-gallery/events/): Event website templates for conferences, festivals, weddings and community events
- [Nonprofit website templates](https://www.b12.io/ai-website-prompt-gallery/nonprofits/): Nonprofit website templates for charities, animal rescues and churches
- [Construction website templates](https://www.b12.io/ai-website-prompt-gallery/construction/): Construction website templates for contractors, builders, roofers and remodelers
- [Travel website templates](https://www.b12.io/ai-website-prompt-gallery/travel/): Travel website templates for agencies, hotels, B&Bs, vacation rentals and travel blogs
- [Pricing](https://www.b12.io/pricing/): DIY plans (Free, Website, Website + Client Engagement) and Expert plans with B12's team
- [Product Overview](https://www.b12.io/product-overview/): Full feature overview of B12's platform
- [How It Works](https://www.b12.io/how-it-works/): The three-step build process: describe, generate, launch
- [AI App Builder](https://www.b12.io/ai-app-builder/): Build a working web app by chatting with AI, with logins, databases, payments, and bookings built in
- [No-Code App Builder](https://www.b12.io/no-code-app-builder/): Describe the app you want and B12 builds it, no code needed
- [Backends](https://www.b12.io/backends/): Add user accounts, a database, payments, and connections to tools like Stripe to any site, just by asking

## Products

### Websites
AI-generated websites with on-page SEO, blogging, third-party
integrations, and built-in conversion tools. Expert help available from the
B12 design and content team.

### Client Engagement
Tools to reach, acquire, and get paid by clients — client intake forms,
contact manager, email marketing and automation, payments
and invoicing, and contracts with eSignatures.

### AI Tools
- [AI Agent](https://www.b12.io/ai-agent/): Conversational AI that builds and edits your site
- [Website Generator GPT](https://www.b12.io/gpts/): Generate a B12 website from ChatGPT
- [Website Generator for Slack](https://www.b12.io/integrations/slack/): Generate a B12 website from a Slack message
- [Free AI tools](https://www.b12.io/tools/): Free generator tools for marketing, content, and design

## Comparisons

- [AI builder alternatives](https://www.b12.io/alternatives/): How B12 compares to other AI website and app builders
- [B12 vs Lovable](https://www.b12.io/lovable-alternative/): B12 as a business launch kit vs. Lovable as a coding sandbox for developers
- [B12 vs v0](https://www.b12.io/v0-alternative/): B12's business tools built in vs. v0's code-focused UI generation
- [Best vibe coding tools](https://www.b12.io/best-vibe-coding-tools/): The top vibe-coding tools compared, and which one fits what you're building
- [B12 vs Replit](https://www.b12.io/replit-alternative/): How B12 compares to Replit for building websites and web apps
- [B12 vs Wix](https://www.b12.io/wix-alternative/): How B12 compares to Wix for building a website or web app
- [B12 vs Squarespace](https://www.b12.io/squarespace-alternative/): How B12 compares to Squarespace for building a website or web app
- [B12 vs Webflow](https://www.b12.io/webflow-alternative/): How B12 compares to Webflow for building a website or web app
- [B12 vs Framer](https://www.b12.io/framer-alternative/): How B12 compares to Framer for building a website or web app
- [B12 vs GoDaddy](https://www.b12.io/godaddy-alternative/): How B12 compares to GoDaddy's website builder
- [B12 vs Hostinger](https://www.b12.io/hostinger-alternative/): How B12 compares to Hostinger's website builder
- [B12 vs Weebly](https://www.b12.io/weebly-alternative/): How B12 compares to Weebly for building a website or web app
- [Lovable pricing](https://www.b12.io/lovable-pricing/): Lovable's plans and credits explained, and how they compare with B12
- [Replit pricing](https://www.b12.io/replit-pricing/): Replit's plans explained, and how they compare with B12
- [v0 pricing](https://www.b12.io/v0-pricing/): v0's plans explained, and how they compare with B12
- [Base44 review](https://www.b12.io/base44-review/): A look at Base44 and how it compares with B12

## Company

- [About](https://www.b12.io/about/): Company background and mission
- [Help Center](https://support.b12.io/en): Official B12 documentation, how-tos, and troubleshooting articles
- [Resource Center / Blog](https://www.b12.io/resource-center/): Guides, tips, and resources for growing a business online
- [Orchestra](https://www.b12.io/orchestra/): B12's AI orchestration product

## Plans

B12 offers two plan families. **DIY plans** are self-serve subscriptions
where the customer builds and manages their own site with B12's AI tools.
**Expert plans** include hands-on work from B12's design, content, and
launch team in addition to the platform.

### DIY Plans

- **Free** — Get online quickly on a B12-branded subdomain. Includes mobile responsive website, AI website generation, and the visual editor.
- **Website** — Launch a polished website on a custom domain. Adds advanced team management, analytics, integrations, and ad removal.
- **Website + Client Engagement** — Everything in Website, plus the tools to run a service business online: custom email address, online payments and invoicing, client intake, email marketing, contact manager, contracts and eSignatures, and file uploads.

### Expert Plans

- **Professional** — B12's team handles website setup and ongoing updates. Includes all client engagement features, business directory listings, and phone support.
- **Advanced** — Designed for businesses with teams that need more seats, more coordination, and priority support.

## Commerce

- Plans are billed in USD, with monthly or annual billing intervals.
- AI credit allowances, seat counts, and current promotional offers vary by plan and may change over time.
- For current pricing, plan comparisons, and the most up-to-date feature list, see https://www.b12.io/pricing/.

## Help Center & Guides

The B12 Help Center at https://support.b12.io/en answers common customer
questions about using B12. Below are articles for the current
version of B12 (B12 3.0, launched February 2026). For the complete library,
browse the help center directly.

### Getting Started with B12 3.0

- [Welcome to B12 3.0](https://support.b12.io/en/v3/welcome-to-b12-websites-3-0): Overview of B12's latest version, which includes whole-website code generation and an AI Agent.
- [B12 3.0 Features](https://support.b12.io/en/v3/websites-3.0-features): What's included in the current version.
- [Previewing and publishing your B12 website](https://support.b12.io/en/v3/previewing-and-publishing-your-website)

### Building and Editing with AI

- [Editing your website with the AI Agent](https://support.b12.io/en/v3/editing-your-website-with-the-ai-agent)
- [Left sidebar editing in B12 3.0](https://support.b12.io/en/v3/left-pane-editing-in-b12-3.0)
- [Adjusting images with Visual edit](https://support.b12.io/en/v3/editing-images)
- [Generating images with the AI Agent](https://support.b12.io/en/v3/generating-images-with-the-ai-agent)
- [Editing your website's code](https://support.b12.io/en/v3/editing-your-websites-code)
- [AI credits](https://support.b12.io/en/v3/ai-message-credits): How AI credits work across plans.

### Domains and Custom Email

- [Publishing your website on a custom domain](https://support.b12.io/en/publishing-your-website-on-a-custom-domain)
- [Domains and your B12 website](https://support.b12.io/en/domains-and-your-b12-website)
- [Customizing your b12sites.com subdomain](https://support.b12.io/en/updating-b12-sites-subdomain)

### Client Engagement Tools

- [Getting started with B12 Payments and Invoicing](https://support.b12.io/en/getting-started-payments-and-invoicing)
- [Composing and sending emails with B12 Email Marketing](https://support.b12.io/en/composing-and-sending-emails-with-b12-email-marketing)

### Forms and Conversion

- [Adding and editing contact forms](https://support.b12.io/en/v3/adding-and-managing-forms)
- [Collecting sensitive information in forms](https://support.b12.io/en/v3/collecting-sensitive-information-in-websites)

### SEO and Discoverability

- [Improving your website's SEO](https://support.b12.io/en/v3/seo-best-practices)
- [Why can't I see my website on Google?](https://support.b12.io/en/v3/why-can-t-i-see-my-site-on-google)
- [Adding your website to Google Search Console](https://support.b12.io/en/v3/add-your-website-to-the-google-search-console)
- [Adding Google Analytics to your website](https://support.b12.io/en/v3/connect-google-analytics-to-your-website)
- [Viewing your website analytics](https://support.b12.io/en/v3/view-your-websites-performance-and-search-analytics)
- [Adding URL redirects](https://support.b12.io/en/v3/adding-page-url-redirects)

### Integrations

- [Adding a third-party contact form](https://support.b12.io/en/v3/integrate-3rd-party-forms)
- [Adding third-party payment integrations (non-US)](https://support.b12.io/en/v3/3rd-party-payment-options-for-non-us)
- [Creating a QR code for your website](https://support.b12.io/en/v3/creating-a-qr-code-for-your-website)
- [Adding a favicon](https://support.b12.io/en/v3/how-to-add-a-favicon)

### Account and Billing

- [I forgot my password](https://support.b12.io/en/forgot-my-password)
- [Updating your payment method](https://support.b12.io/en/how-do-i-update-my-credit-card)
- [Changing your B12 account login email and contact information](https://support.b12.io/en/changing-your-b12-account-login-email-and-contact-information)
- [Viewing your B12 payment history and receipts](https://support.b12.io/en/view-your-b12-payment-history-and-receipts)

### Troubleshooting

- [Troubleshooting issues in B12 3.0](https://support.b12.io/en/v3/troubleshooting-issues-in-websites)
- [Troubleshooting 404 errors](https://support.b12.io/en/v3/troubleshooting-404-errors)
- [Unpublishing your website](https://support.b12.io/en/v3/unpublishing-your-website)