Bolt.new vs Replit Agent

Bolt.new: AI-Powered Full-Stack Web Development in the Browser

Bolt.new is an AI-powered web development agent that allows you to prompt, run, edit, and deploy full-stack applications directly from your browser—no local setup required. If you're here to build your own AI-powered web dev agent using the Bolt open source codebase, click here to get started!

What Makes Bolt.new Different

Claude, v0, etc are incredible- but you can't install packages, run backends or edit code. That’s where Bolt.new stands out:

• Full-Stack in the Browser: Bolt.new integrates cutting-edge AI models with an in-browser development environment powered by StackBlitz’s WebContainers. This allows you to:

  • Install and run npm tools and libraries (like Vite, Next.js, and more)
  • Run Node.js servers
  • Interact with third-party APIs
  • Deploy to production from chat
  • Share your work via a URL

• AI with Environment Control: Unlike traditional dev environments where the AI can only assist in code generation, Bolt.new gives AI models complete control over the entire environment including the filesystem, node server, package manager, terminal, and browser console. This empowers AI agents to handle the entire app lifecycle—from creation to deployment.

Whether you’re an experienced developer, a PM or designer, Bolt.new allows you to build production-grade full-stack applications with ease.

For developers interested in building their own AI-powered development tools with WebContainers, check out the open-source Bolt codebase in this repo!

Tips and Tricks

Here are some tips to get the most out of Bolt.new:

• Be specific about your stack: If you want to use specific frameworks or libraries (like Astro, Tailwind, ShadCN, or any other popular JavaScript framework), mention them in your initial prompt to ensure Bolt scaffolds the project accordingly.

• Use the enhance prompt icon: Before sending your prompt, try clicking the 'enhance' icon to have the AI model help you refine your prompt, then edit the results before submitting.

• Scaffold the basics first, then add features: Make sure the basic structure of your application is in place before diving into more advanced functionality. This helps Bolt understand the foundation of your project and ensure everything is wired up right before building out more advanced functionality.

• Batch simple instructions: Save time by combining simple instructions into one message. For example, you can ask Bolt to change the color scheme, add mobile responsiveness, and restart the dev server, all in one go saving you time and reducing API credit consumption significantly.

FAQs

Where do I sign up for a paid plan?
Bolt.new is free to get started. If you need more AI tokens or want private projects, you can purchase a paid subscription in your Bolt.new settings, in the lower-left hand corner of the application.

What happens if I hit the free usage limit?
Once your free daily token limit is reached, AI interactions are paused until the next day or until you upgrade your plan.

Is Bolt in beta?
Yes, Bolt.new is in beta, and we are actively improving it based on feedback.

How can I report Bolt.new issues?
Check out the Issues section to report an issue or request a new feature. Please use the search feature to check if someone else has already submitted the same issue/request.

What frameworks/libraries currently work on Bolt?
Bolt.new supports most popular JavaScript frameworks and libraries. If it runs on StackBlitz, it will run on Bolt.new as well.

How can I add make sure my framework/project works well in bolt?
We are excited to work with the JavaScript ecosystem to improve functionality in Bolt. Reach out to us via hello@stackblitz.com to discuss how we can partner!

Overview

Replit Agent is an AI agent that builds apps, websites and internal tools from a chat description. You describe what you want, the agent scaffolds the project, writes the code, installs dependencies, runs it, and helps you refine it conversationally. Replit positions it as an engineering team on demand, with no coding experience required.

Because Agent runs inside Replit's workspace, the app is hosted, has a database and auth available, and can be published from the same place it was built — no separate deploy pipeline to assemble.

Core capabilities

• Chat-to-app building — describe the product; Agent creates the project structure, UI, backend and data model.
• Iterative refinement — ask for changes in natural language ("make the header sticky", "add Stripe checkout") and the agent edits the running app.
• Built-in hosting and deployment — preview and publish from the workspace; Replit handles the runtime and URL.
• Database, auth and integrations — add persistence, user accounts and third-party APIs without wiring infrastructure by hand.
• Mobile and web output — build responsive web apps and mobile apps from the same workspace.
• Collaboration — invite teammates into the workspace, review changes and continue building together.
• Agent + editor — switch between chatting with the agent and editing code directly when you want control.

What it is good at

Replit Agent is a good fit for MVPs, internal tools, prototypes, landing pages and small production apps where speed matters more than bespoke infrastructure. It is less suited to highly custom architectures or strict compliance environments where you need full control of the runtime.

Getting started

1. Create a Replit account and open Agent.
2. Describe the app and the outcome you want, including any integrations.
3. Review the running preview; ask for changes until it matches.
4. Add a database or auth if the app needs them.
5. Publish to a Replit-hosted URL, or connect a custom domain on a paid plan.

Pricing

Replit has a free Starter tier with limited agent usage, plus paid Core, Teams and Enterprise plans that add more agent credits, private projects, collaboration and deployment features. See replit.com/pricing for current limits.

Links

• Product: replit.com/products/agent
• Sign up: replit.com/signup
• Pricing: replit.com/pricing