Overview
Replit is an online IDE and app generation platform that runs in the browser. It generates full-stack apps (frontend, backend, DB, deployment) from natural language, and supports mobile development with React Native and Expo.
Key Features
Replit Agent 4
The current agent is Agent 4. It takes on orchestration and repetitive work while creative judgment stays with the human.
Design Canvas
An infinite board that holds every artifact type — web apps, mobile apps, slide decks — inside a single project, with live previews, direct manipulation, and parallel agents working on different parts of the project at once.
Shared-Project Collaboration
The old fork-and-merge model is gone: teammates now work together inside one shared project with agent-assisted merging.
Credit-Based Billing
Agent billing reflects actual work (time and compute). Once monthly credits run out, Replit switches to pay-as-you-go, making agent usage and deployments the biggest variable costs.
MCP Integration
Model Context Protocol support — connect OpenAI, Stripe, Google Workspace, and more directly to your dev environment.
Browser-Based
No local setup. Code, run, and deploy from the browser. Ideal for education and beginners.
Pricing
| Plan | Monthly | Highlights |
|---|---|---|
| Starter | $0 | Free daily Agent credits, publish up to 1 project |
| Core | $25 ($20 billed annually) | $25 of monthly credits, 5 collaborators, 2 parallel agents |
| Pro | $100 ($95 billed annually) | $100 monthly credits, 15 collaborators + 50 viewers, 10 parallel agents, 28-day database rollbacks |
| Enterprise | Contact | SSO/SAML, single-tenant, region selection, VPC peering |
Core is $25/month (or $20/month billed annually) with $25 of monthly credits, five collaborators, and two parallel agents, while Pro is $100/month with $100 of credits, fifteen collaborators plus fifty viewers, ten parallel agents, and 28 days of database rollbacks.
Typical Use Cases
- Rapid prototypes and MVPs
- Education and learning (no environment setup)
- Mobile app prototyping
- Full-stack personal projects
- External service integration via MCP
Strengths
- ✅ Browser-based, no setup needed
- ✅ Replit Agent 4 for autonomous full-stack generation
- ✅ Design Canvas unifies web, mobile, and slides in one project
- ✅ MCP integration with external services
- ✅ Great for education
Weaknesses
- ❌ Not ideal for large-scale production
- ❌ Unpredictable credit consumption
- ❌ Not for local-editor devs
- ❌ Performance drops with complex projects
Official Resources
- Website: https://replit.com
- Pricing: https://replit.com/pricing
- Agent: https://replit.com/ai
使いこなし Tips
SNS・コミュニティで共有されている実践的な使い方
- Replit Agent now supports Custom Instructions and Skills — register your project conventions and brand guidelines once, and the agent applies them automatically on future prompts instead of you repeating them (Source: https://x.com/Replit/status/2065146579326271883)
Amazon Q Developer / Kiro