Lovable vs Bolt vs v0 vs Replit Agent: AI App Builders Compared (2026)
The four best-known AI app builders side by side on price, free plans, what they build, reliability and usage, with live data and advice on which fits which project.
AI app builders turn a description into a running web app: interface, backend, database and hosting, edited by chatting rather than by writing code. Lovable, Bolt.new, v0 and Replit Agent are the four most compared. They look alike in a demo; the differences show up in pricing, in what happens when the app gets bigger, and in how easily you can take the code elsewhere.
At a glance
| Lovable | Bolt.new | v0 | Replit Agent | |
|---|---|---|---|---|
| Made by | Lovable | StackBlitz | Vercel | Replit |
| Entry price | Free + $25/mo | Free + $25/mo | Free + $30/mo | Free + $20/mo |
| Free plan | Yes | Yes | Yes | Yes |
| Gid Score | 60 | 41 | 28 | 59 |
| Status incidents, 30 days | 14 | 7 | 3 | no public status page |
The Gid Score blends usage, community and attention into one 0-100 number; the methodology explains it. Incident counts come from each vendor's status page and say more about transparency than about quality: a vendor that reports small incidents will look worse than one that reports nothing.
What each one is best at
Lovable generates full-stack web apps with a built-in cloud backend and syncs the code to GitHub. It is aimed at founders and product people who want a working product rather than a mockup. Plans are metered in credits per message.
Bolt.new from StackBlitz runs the whole development environment in your browser, so you see the real app, its files and its terminal while the agent works. It suits people who want to watch and occasionally touch the code. Its free plan is metered in tokens per day and per month.
v0 from Vercel started as a UI generator and now builds full-stack apps with GitHub branches and pull requests, a visual Design Mode and one-click deployment to Vercel. It is the natural choice for teams already on Next.js and Vercel.
Replit Agent lives inside Replit's browser IDE, with hosting, databases and mobile app support. It goes furthest toward a complete development platform, which helps when an app grows beyond a prototype, and offers several agent modes with different speed and cost.
What they cost
| Builder | Entry price | What the listed plans cover |
|---|---|---|
| Lovable | Free + $25/mo | Free plan with 5 daily build credits (up to 30 a month); Pro from $25/mo ($21/mo billed annually) and Business from $50/mo ($42/mo billed annually), each with 100 monthly credits;... |
| Bolt.new | Free + $25/mo | Free $0 (300K tokens/day, 1M/month); Pro $25/mo billed monthly (starts at 10M tokens/month, no daily limit); Teams $30/member/mo; yearly billing saves up to 28%; Enterprise via sales. |
| v0 | Free + $30/mo | Free $0 (7 messages/day); Plus $30/user/mo (page also shows a struck-through $90) with $30 of monthly credits and $2 of daily login credits; Business $100/user/mo; Enterprise custom;... |
| Replit Agent | Free + $20/mo | A free Starter plan with a Free Mode allowance; Core $20/mo ($18/mo billed annually); Pro $100/mo ($90/mo billed annually) with 10 parallel agents; Enterprise custom; usage beyond... |
| Base44 | Free + $20/mo | Free (25 message credits/mo, up to 5 apps); paid plans from $20/mo, shown with annual billing (20% off) as Starter $16, Builder $40, Pro $80 and Elite $160 per month; Enterprise custom. |
| Emergent | Free + $20/mo | Free $0 (10 monthly credits); Standard $20/mo ($17/mo annually, 100 credits/mo); Pro $200/mo ($167/mo annually, 750 monthly credits, 1M context); Business and Enterprise are custom. |
All four sell credits or tokens on top of the monthly price, and a large app burns them faster than a small one: every change needs the agent to read more of the project. Budget for the plan above the entry tier if you plan to build more than a prototype.
Head-to-head
How to choose
- A product idea to validate quickly: Lovable or Bolt.new. Both get to a clickable app fastest.
- A team on Next.js and Vercel: v0, because the result lands in your repository and deploys where you already host.
- An app that will keep growing: Replit Agent, or any of the four with GitHub sync switched on from day one so you can move to a coding agent later.
- Non-technical builders: Base44 and Emergent also handle backend, logins and hosting for you.
Whatever you pick, connect GitHub early. Builders are excellent for the first version; when the app outgrows chat-based editing, a coding agent working on the same repository takes over without a rewrite.
Real projects
Teams have published what they built with these tools, from internal dashboards to prototypes that replaced written specs. See the use cases for examples with the setup and reported results.
The full ranking
| # | Agent | Gid Score | Downloads 7d | 7d | 30d | Stars | Latest release | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 27 |
LovableLovable |
60 | — | — | — | — | — | ||||
| 29 |
Replit AgentReplit |
59 | — | — | — | — | — | ||||
| 108 |
EmergentEmergent Labs |
42 | — | — | — | — | — | ||||
| 112 |
Base44Wix (Base44) |
41 | 64.3K | down 22.8% | up 91.0% | 116 | 0.1.323d ago | ||||
| 113 |
Bolt.newStackBlitz |
41 | — | — | — | 16.6K+1/day | — | ||||
| 210 |
v0Vercel |
28 | — | — | — | — | — | ||||
| 229 |
|
25 | — | — | — | — | — | ||||
| No agents match that filter. | |||||||||||
More options, including site builders: AI agents for building websites and web apps.
Agents mentioned in this guide
| # | Agent | Gid Score | Downloads 7d | 7d | 30d | Stars | Latest release | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 27 |
LovableLovable |
60 | — | — | — | — | — | ||||
| 113 |
Bolt.newStackBlitz |
41 | — | — | — | 16.6K+1/day | — | ||||
| 210 |
v0Vercel |
28 | — | — | — | — | — | ||||
| 29 |
Replit AgentReplit |
59 | — | — | — | — | — | ||||
| 112 |
Base44Wix (Base44) |
41 | 64.3K | down 22.8% | up 91.0% | 116 | 0.1.323d ago | ||||
| 108 |
EmergentEmergent Labs |
42 | — | — | — | — | — | ||||
| No agents match that filter. | |||||||||||