Comparisons · 11 min read
v0 vs Lovable vs Bolt vs Website Killer: 2026 head-to-head
We rebuilt the same marketing site in four AI builders. Output quality, time-to-published, total cost, and what each one is actually for. The full side-by-side.
Four AI builders. One brief: a 5-page marketing site for a fictional B2B SaaS called "Coldfront" — home, features, pricing, integrations, and contact. Same prompt across all four. Same evaluation criteria: design quality, time-to-published, custom-domain flow, and total cost to ship a v1.
We've used each tool extensively (we ship Website Killer ourselves, but we ran each of the others as a paying customer for at least a month before this comparison). Here's what we found.
tl;dr matrix
- v0: best for React + shadcn components. Fails as a full-site builder — leaves you holding the deploy.
- Lovable: best for full-stack apps with a backend. Overkill for a marketing site.
- Bolt.new: best for developers who want a code-first AI sandbox. Marketing-site UX is rough.
- Website Killer: built specifically for marketing sites — templates, hosting, custom domain, predictable pricing.
v0 (Vercel)
v0 is the strongest component-level AI generator on the market. The output is clean React + shadcn/ui, the typography is consistent, and the iteration speed inside the v0.dev canvas is excellent. We had a beautiful hero section in 90 seconds.
The problem starts when you try to assemble those components into a finished site. v0 doesn't ship a multi-page generator. You build component-by-component, then wire them into a Next.js project yourself, then deploy to Vercel, then point your domain. For our 5-page Coldfront brief, this took 3.5 hours start to finish.
Pricing: v0 Premium is $20/month for 5,000 messages. Heavy users blow through that fast. Components feel cheap to generate in the moment; the real cost is in the assembly.
Lovable
Lovable's superpower is full-stack apps. Give it a brief like "a SaaS dashboard with auth, billing, and a Postgres-backed user table" and it ships something close to working in 10 minutes. For app-shaped problems, Lovable is genuinely impressive.
For our marketing-site brief, Lovable was overkill. It generated the site in 8 minutes — but the output was app-flavored: dashboard-like layouts, generic copy, no marketing-grade design rhythm. Iterating in chat to make it look like a marketing site (not a dashboard) took another hour.
Pricing: Lovable starts at $20/month with limited credits. Token consumption on complex prompts is opaque — we hit our monthly limit on day 12 of the test.
Bolt.new (StackBlitz)
Bolt is built for developers. The in-browser StackBlitz environment is fast, you get a real terminal, and npm install works as expected. For technical users who want an AI sandbox they can poke at, Bolt is excellent.
For our marketing-site brief, Bolt was the wrong abstraction. The default output was code-first — landing on the project tree, not a rendered page. We had to manually push to Netlify or Vercel for hosting; there's no "publish to a domain" flow built in. Total time to a public URL: 2 hours.
Pricing: Bolt Pro starts at $20/month. Token-heavy prompts can spike unpredictably — we exceeded the daily cap once during the test.
Website Killer
Disclosure: we built Website Killer. Methodology-wise, the comparison test was run by a teammate who's used the product for less than a week, with the same prompt as the others.
Website Killer generated the full Coldfront site in 4 minutes. Hero, features, pricing with structured data, integrations with anchor-text-rich grid, contact form wired to an inbox, FAQ with FAQPage JSON-LD. The site published to coldfront.websitekiller.com automatically; pointing a custom domain was a 2-minute DNS task.
Pricing: free forever for 1 template-based project. $20/month Startup unlocks full AI builds, 5 projects, 5 domain slots, contact forms, and ZIP export.
Total cost to ship a marketing site v1
- Website Killer: $0 (free forever) or $20/mo (paid)
- v0: $20/mo + your time wiring + Vercel hosting (~$0 hobby tier)
- Lovable: $20/mo + Vercel/Supabase = ~$25/mo total
- Bolt: $20/mo + Vercel/Netlify deploy
Which one should you pick?
If you're a developer building a product UI, pick v0 — its component output is unmatched. If you're shipping a fullstack app with auth and a database, pick Lovable. If you live in a code editor and want an AI sandbox, pick Bolt. If you want a finished marketing website without thinking about deploys, hosting, or component assembly, pick Website Killer.
Frequently asked questions
Is Website Killer biased in this comparison?
We built Website Killer, so yes — there's a built-in conflict of interest in any comparison we publish. We've tried to be honest about where the others win (v0 on component output, Lovable on full-stack apps, Bolt on developer ergonomics) and clear about our methodology. Use this post as one input, not the final word.
Which AI website builder has the best free tier?
Website Killer is the only one of the four with a forever-free tier. v0, Lovable, and Bolt all give limited credits or short trials before requiring payment.
Can I migrate between these tools?
All four offer source-code export, so technically yes — but the codebases are structured differently. The practical path is to describe your existing site in the new tool and regenerate, rather than copy-paste-port.
