Bolt.new
by StackBlitz
Prompt, edit, and deploy full-stack web apps in the browser
Last reviewed 2026-06-18
Bolt.new is StackBlitz's AI app builder that turns plain-English prompts into working full-stack web (and mobile) apps entirely in the browser. It pairs frontier AI models with StackBlitz's WebContainers, an in-browser Node.js runtime, giving the AI control over the filesystem, package manager, terminal, dev server, and console so it can scaffold an app, install dependencies, run it, and iterate. Bolt V2 added Bolt Cloud with built-in databases, auth, storage, edge functions, and hosting. Bolt.new does multi-step generation and can run commands across the project, but a human reviews output, steers it through follow-up prompts, and decides what to deploy, so it operates as a supervised agent during a build and a copilot during edits. It is open-source-derived (the bolt.new repo is public) and billed on a token-based, usage model.
What it can do
Generate a full-stack app from a prompt in the browser
SupervisedTurns a plain-English prompt into a working full-stack app, scaffolding frontend and backend, setting up databases, API endpoints, and auth, with live preview, all in the browser.
sourceControl the full dev environment (WebContainers)
SupervisedThe AI has control over the in-browser filesystem, package manager, Node server, terminal, and console, so it can install dependencies, run the app, and act on errors across the app lifecycle.
sourceDeploy and host with built-in backend (Bolt Cloud)
CopilotBolt V2 added Bolt Cloud with built-in databases, authentication, file storage, edge functions, analytics, and hosting, so generated apps can be deployed without leaving Bolt.
source
Strengths
- +Full dev environment runs in the browser via WebContainers, with the AI controlling filesystem, terminal, and server
- +Generates true full-stack apps (not just UI) and can deploy via Bolt Cloud
- +No local setup; fast for prototyping and iterating by chatting
Limitations
- −Token-based usage cost can rise quickly on complex or long-running builds
- −Output needs human review and iteration; it is not a hands-off autonomous engineer
- −In-browser runtime constrains some workloads compared with a local environment
Overview
Bolt.new is StackBlitz's AI app builder. It turns plain-English prompts into working full-stack web and mobile apps entirely in the browser, pairing frontier AI models with StackBlitz's WebContainers, an in-browser Node.js runtime.
What it does
The AI has control over the in-browser filesystem, package manager, Node server, terminal, and console, so it can scaffold an app, set up databases, API endpoints, and auth, install dependencies, run the app, and act on errors with live preview. Because a human reviews output and iterates through follow-up prompts before shipping, it operates as a supervised agent during a build and a copilot during edits. Bolt V2 added Bolt Cloud with built-in databases, auth, storage, edge functions, analytics, and hosting.
Integrations & setup
Runs fully in the browser. Deploys via Netlify and Bolt Cloud, connects to Supabase and GitHub, and supports Expo for mobile. The bolt.new repository is public on GitHub.
Pricing
Freemium with token-based usage: a free tier (around 1M tokens/month), a Pro plan from roughly $25/mo with larger token allotments and rollover, plus Teams and Enterprise tiers. Heavy or long-running builds consume tokens quickly.
Best for / not for
Best for builders who want to go from prompt to deployed full-stack app with zero local setup and are comfortable iterating by chatting. Less ideal for workloads that need a local environment or tight cost predictability.
Alternatives
Lovable is the closest full-stack app builder; v0 targets UI-first generation; Replit Agent builds and runs apps from a prompt.
What people are saying
Loved for
- +code
- +bolt
- +development
Common gripes
- −coding
- −vibe
- −bolt
Recent mentions
“Most Photoshop mockups look fake. Not because the design is bad. Because the designer forgot one thing: Real products have imperfections. That's why crumpled tube mockups are such a powerful exercise. They teach you ho”
“Most beginners think Photoshop is complicated. It's not. You just need to know a few tricks that save hours of work. Take this example: A broken plate. A damaged surface. Something that would normally take multiple too”
“Most Photoshop edits fail before the editing even starts. Why? Because the perspective is wrong. Your brain notices it instantly—even if you don't realize it. That's why Perspective Warp is one of the most powerful Pho”
“AI tools are becoming part of everyday work. Some help you write. Some help you code. Some help you design. Some help you research. Some help you automate entire workflows. Here are 30 AI tools worth knowing:”
“The Microsoft Garage in Mountain View just reopened this week The Garage is an innovation hub where Microsoft employees create, build, and launch projects. There are several locations around the world. My favorite progra”
FAQ
Is Bolt.new autonomous?+
No. It does multi-step generation and can run commands across an in-browser project, but a human reviews the output, steers it with follow-up prompts, and decides what to deploy. In practice it is a supervised agent during a build and a copilot during edits, not an autonomous engineer.
What is WebContainers?+
StackBlitz's WebContainers is a full Node.js runtime that runs entirely in the browser. It is what lets Bolt's AI control the filesystem, package manager, terminal, and dev server without any local setup.
Sources
- Bolt.new (official site) · accessed 2026-06-18
- stackblitz/bolt.new (GitHub) · accessed 2026-06-18
- Bolt.new Review 2026: Pricing, Tokens & Real Limits (Taskade) · accessed 2026-06-18
Last reviewed 2026-06-18