Comparison
Lovable vs Bolt vs v0 vs NixSite: pricing and model in 2026
Most "AI website builder" searches end in the same three names - Lovable, Bolt.new and v0 - plus a quieter fourth option: NixSite, a free Bring Your Own Key builder from BTA Labs. This page compares how they charge, what they run, and who each one is for.
What each tool actually is
Lovable is a full-stack AI software builder aimed at shipping apps with managed backend pieces (commonly Supabase) and GitHub sync. Bolt.new is an in-browser builder built around WebContainers, so it can run Node-style workflows in the tab. v0 is Vercel's UI generator, strongest when you want React / shadcn-style components inside the Vercel ecosystem.
NixSite is a browser AI website and web-app builder on the Bring Your Own Key model: you paste a key from OpenAI, Anthropic, Gemini or another supported provider, generate and preview in an isolated canvas, export the project, and optionally publish to the community showcase or Cloudflare Pages. There is no platform subscription and no credit meter on the builder itself.
Pricing models (how you pay)
Exact dollar amounts move. What does not move as fast is the billing shape. Lovable, Bolt and v0 sell platform access with credit or token packages on top of their own model routing. When the monthly allotment is gone, generation stops until you buy more or wait for the cycle to reset.
NixSite does not resell tokens. You pay your provider at their published API rates (or use a free tier / local Ollama). The platform fee is zero. That is the whole commercial difference this page exists to make clear.
| Dimension | Lovable | Bolt.new | v0 | NixSite |
|---|---|---|---|---|
| Platform fee | Subscription / credits | Subscription / tokens | Credits inside Vercel plans | Free (BYOK) |
| Who you pay for AI | The platform | The platform | The platform | Your API provider |
| Hard generation caps | Yes, credit-based | Yes, token-based | Yes, credit-based | Only your provider quota |
| Primary strength | Full-stack + managed backend | In-browser Node / WebContainers | UI components + Vercel | Canvas sites, tools, games |
| Code export | GitHub-oriented workflow | Project export / deploy flows | Component / project export | ZIP + Cloudflare Pages |
| Local / Ollama | Not the core model | Cloud models typical | Cloud models | Supported via Ollama |
When to pick which
Pick Lovable when you want a managed full-stack path with database wiring handled for you and you are fine paying a monthly platform bill for that convenience.
Pick Bolt.new when you specifically need WebContainer / Node-in-the-browser behaviour and accept token metering for that runtime.
Pick v0 when your goal is polished React UI inside the Vercel stack and credits are already part of how you ship.
Pick NixSite when you want a free AI website builder, you already have (or can create) an API key, and you care more about canvas speed, remixing and keeping markup at zero than about a managed SaaS backend.
- Start on NixSite at /build - no card required for the builder itself.
- Read the one-to-one pages for deeper architecture: /compare/lovable, /compare/bolt, /compare/v0.
- For a cost breakdown in dollars and cents of API usage, see the guide on how much it costs to build a website with AI.
Questions
- Is NixSite a Lovable or Bolt alternative?
- Yes, for people who want a BYOK AI website builder without a platform subscription. Lovable and Bolt remain better fits when you want their managed full-stack or WebContainer workflows and are happy to pay for them.
- Does "free" mean the AI is free?
- The NixSite platform is free. Model usage is billed by whichever provider key you connect, at that provider's rates - or $0 if you use a free tier or a local model via Ollama.
- Where do I try NixSite?
- Open https://btalabs.dev/build or the NixSite product page at /nixsite.