Replit is a browser-based development platform where you can build, run and deploy complete applications without installing anything. The Agent builds full-stack apps — frontend, backend, database, authentication, deployment — from a description. Over 40 million users. No local setup. Free tier available.
Replit is a browser-based development platform — a full coding environment you open in a tab, with no installation required. Replit Agent is the AI system inside it that can build, deploy and run complete applications from a description. You describe what you want to build. The Agent writes the code, sets up the database, configures authentication and deploys a live URL — all without leaving the browser.
What makes Replit distinct from other AI coding tools is that everything runs in the cloud. There is no local setup, no managing dependencies, no configuring deployment. You go from idea to live app in the same session. The "Made with Replit" badge on the free tier is your only reminder that it handled all the infrastructure.
Replit has over 40 million users and is widely used for learning to code, building internal tools, creating prototypes and running hackathon projects. The Agent feature specifically targets people who want to ship something without being experts in every layer of the stack.
Replit supports over 50 programming languages and can build web applications, APIs, data pipelines, internal tools, bots and automation scripts. Built-in database, authentication and secret management mean the common infrastructure pieces do not need to be wired up manually. Replit also has over 30 third-party integrations including Stripe, Figma, Notion, Salesforce and more.
The Agent can automate up to 90% of foundational code according to Replit's own documentation — meaning for a typical web application, you describe the requirements and the Agent handles the boilerplate, routing, data models and basic frontend. You handle the domain-specific logic and refinements.
Replit is best for people who want to build something functional without complex local development setup. This includes beginners learning to code who want to see results immediately, founders building MVPs who do not want to spend days configuring infrastructure, and technical teams who need internal tools built quickly without committing developer time.
Real-time collaboration — multiple people editing the same codebase simultaneously like Google Docs — is one of Replit's strongest features and is particularly valuable for teams, pair programming sessions and classroom settings.
Cursor and Claude Code are tools that work on code in your local development environment. They make you faster but they do not handle infrastructure. You still need to set up a database, configure deployment, manage environment variables, and host your application somewhere.
Replit handles all of that in one place. If you are building something to show someone or to test an idea, Replit gets you to a live URL faster. If you are building production software that needs to run at scale with your own infrastructure choices, Cursor or Claude Code inside your own environment is the better fit.
The Starter tier is free and includes daily Agent credits, AI integrations and the ability to run public projects. You cannot publish live apps or access private repos on the free tier. Replit Core is $17 per month billed annually ($20 monthly) and includes $20 in monthly credits, up to 5 collaborators and unlimited workspaces. Replit Pro is $95 per month billed annually for teams doing intensive development. Enterprise pricing is custom.
No download needed. Go to replit.com and create a free account. You can sign up with Google, GitHub or email. The full development environment runs in your browser.
Click "Create Repl". Choose a language template or use the AI agent mode to describe what you want to build. The Agent will set up the project structure, install dependencies and give you a running environment.
In the Agent panel, describe what you want to build. Be specific about the core functionality: what the app does, who uses it, what data it needs to store. The Agent will ask clarifying questions if needed, then build the initial version.
The Agent works incrementally. After the initial build, describe what to add or change next. Click Run at any time to see the current state of your application. A live preview URL is generated automatically.
When you are ready to share, click Deploy. Replit hosts the application automatically. You get a public URL. On the free tier the URL includes Replit branding. Core and above remove the branding and allow custom domains.
Be specific about requirements upfront. The Agent builds from your description. Vague descriptions produce vague applications. Before starting, write out the five most important things the application needs to do. Give these to the Agent in the first message. Changing requirements mid-build is possible but slower than getting the specification right initially.
Use environment variables for secrets. Never put API keys, database passwords or other secrets directly in code. Replit has a Secrets panel (the lock icon in the sidebar) where you store these. Reference them in code as environment variables. The Agent knows how to use them — just tell it to use Secrets for any credentials.
Commit frequently to GitHub. Replit has built-in Git integration. Connect your project to GitHub and commit working versions regularly. If the Agent breaks something, you can revert to the last working commit without losing everything.
Replit is a cloud-based IDE and hosting platform. Each project (called a "Repl") runs in its own container on Replit's infrastructure. The execution environment, package management, and file system are all managed by Replit — you interact with them through the browser interface.
Replit Agent 4 is the current AI agent version, described by Replit as capable of building complete full-stack applications with built-in hosting, databases and authentication. The Agent integrates with Replit's built-in services (database, auth, secrets) and its 30+ third-party integrations.
Replit includes a built-in key-value database (Replit DB) accessible from any language. For more structured data, Replit integrates with PostgreSQL, SQLite and external database providers. The Agent can set up and configure any of these as part of building an application.
Applications deployed on Replit run on Replit's infrastructure. The free tier hosts public projects. Paid tiers support private projects, custom domains and higher resource allocations. Applications that need to run 24/7 require an Always On setting, which is available on Core and above.
Per Replit's official pricing page: