B12
Verified Oct 15, 2026 ActiveDescribe a business and get a working site to edit by chat, with client intake, contracts and email marketing on the upper plan.
Listed on EffectHub ·
Pricing
- Pricing model
- Freemium
- Paid options from
- $24/mo
- Billing
- Monthly
Free on a B12 subdomain with 5 AI credits a day, capped at 30 a month. Website is $24/month ($20 billed yearly) with 100 AI credits and 10 launched projects; Website + Client Engagement is $78/month ($67 yearly) with 300 credits; new users pay $1 for the first 7 days. Done-for-you Professional ($199) and Advanced ($399) plans add a setup fee and cannot be downgraded.
Use tool ↗About B12
B12 generates a first-draft website, store, portfolio or simple web app from a description of your business in about two minutes, then lets you refine it in a visual editor with a chat assistant beside it. The free tier publishes to a B12 subdomain under a small monthly AI-credit cap. The Website plan adds a custom domain, commerce, backends and analytics, and Website + Client Engagement adds the back office a small service firm needs: client intake forms, a contact manager, email marketing, contracts with e-signature, file uploads and a custom email address. Done-for-you tiers put B12's designers and copywriters on the build. It is run by Unlimited Labs Inc. of New York, founded in 2016.
- Platforms
- Web
- API
- Not confirmed
- Last verified
- Oct 15, 2026
Verified sources
- Free $0; Website $24/month ($20/month yearly) with 100 AI credits and 10 launched projects; Website + Client Engagement $78/month ($67 yearly) with 300 credits; $1 for first 7 days; Professional $199 and Advanced $399 done-for-you plans (15 October 2026)b12.io ↗
- AI builder for sites, stores and web apps, plus client intake forms, contact manager, email marketing, commerce and contracts with e-signature (15 October 2026)b12.io ↗
- Terms are a contract with Unlimited Labs Inc. (B12), 169 Madison Ave, New York, under New York law (15 October 2026)b12.io ↗
Is B12 legit?
We don’t label tools safe or unsafe. Below are the records we checked ourselves, each with the date we read it.
- TLS certificate
- Issued by Amazon, valid until Feb 2, 2027Seen in our own connection to the site on Oct 15, 2026
- Last checked
- Oct 15, 2026The site answered
- On the market since
- 2016The vendor's own material, read by us
- Operated by
- Unlimited Labs Inc., United StatesOur research, card verified Oct 15, 2026
Pros & cons of B12
B12 is a site builder with a starter back office attached: the generated site is the front door, and on the $78 plan intake forms, contracts, e-signature and email marketing are what you are really paying for. The Website plan has dropped to $24 a month, which puts a custom-domain AI site in line with general-purpose builders, but the client tools sit only on the upper tier. The $1 offer covers the first seven days, after which the plan renews at the full monthly rate.
Pros
- Generates a full first-draft site from a plain description, then edits by chat
- Website + Client Engagement bundles intake, contact manager, contracts with e-signature and email marketing
- Free tier publishes a real site on a B12 subdomain with no card
- Custom domain included free for the first year on paid plans
Cons
- Client intake, contracts and email marketing are only on the $78 plan, not the $24 one
- AI credits are capped per plan - 30 a month on free, 100 on Website, 300 on Client Engagement
- Launched projects are capped at 10 or 30 depending on tier
- Done-for-you plans carry an unitemised setup fee and block downgrades
Best for
- Solo professionals and small service firms needing a site plus client intake in one place
- Anyone who wants contracts and e-signature attached to their website rather than bought separately
- Getting a credible first draft online without a designer
Not for
- Developers who want template control, custom code or a static export
- Publishers and content sites, where the client-engagement bundle is dead weight
Watch out: The $1 deal lasts 7 days, not a month, and then the plan bills at $24 or $78 a month; the custom domain is free only for the first year.
Alternatives to B12
B12 head-to-head
Side-by-side fact sheets against the competitors our research or their makers name — pricing, platforms, API and both verdicts on one page.
Also used for
AI tools by profession
Website Builders is one of the jobs on this page: