Agent 3

Agent 3

Replit
+
+

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About

Replit Agent 3 is the most autonomous, AI-powered builder yet for creating production-ready applications entirely through natural-language prompts. You describe the app or website idea, and Agent automatically handles everything: setting up the full-stack environment, designing interfaces, configuring databases, managing dependencies, and integrating authentication or third-party services like Stripe or OpenAI. It offers two development modes: a visual-first “Start with a design” option that generates a clickable prototype in just minutes before enabling full functionality, or a “Build the full app” mode that constructs a functioning application, including frontend, backend, and integrations, in around 10 minutes. Agent 3 also self-tests within a browser workflow, identifying bugs, fixing them, and rerunning tests in a continuous reflection loop that is up to 3x faster and 10x more cost-efficient than traditional testing models.

About

App0 is an AI-native app builder that turns a written description into a working full-stack application. Users describe what they need and choose an AI model, while the platform plans, codes, runs, tests, and fixes the project in an isolated development environment. Input can include written requirements, sketches, screenshots, or reference files, and the AI can build the frontend, backend, database, and APIs in one workflow. Every project is verified with type checks, tests, and build checks in a real environment, then delivered through an isolated HTTPS preview with a complete codebase that can be refined, exported, deployed, and owned by the user. App0 is designed to produce clean, maintainable, production-grade code rather than disposable demo prototypes. It provides clear live progress through analysis, research, editing, execution, and verification, followed by a complete handoff.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Product managers in search of a solution to build, test, and deploy fully functioning apps using plain-language prompts, guided development modes, and high-autonomy AI assistance

Audience

Developers, founders, and product teams wanting to turn requirements, sketches, or screenshots into tested, deployable full-stack applications with AI

Support

Phone Support Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$20 per month
Free Version Supported
Free Trial Not Supported

Pricing

$99 per month
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Replit
Founded: 2016
United States
replit.com/agent3

Company Information

App0
United States
app0.ai/

Alternatives

Alternatives

VibeSDK

VibeSDK

Cloudflare
WebSparks

WebSparks

WebSparks.AI

Categories

Agentic AI Supported
AI Agents Supported
AI App Generators Supported
AI Coding Agents Supported
Vibe Coding Supported

Categories

AI App Generators Supported
Vibe Coding Supported

Integrations

ChatGPT Not Supported
Claude Fable 5 Not Supported
Claude Fable 5.1 Not Supported
Claude Fable 5.5 Not Supported
Claude Haiku 5.5 Not Supported
Claude Mythos 5.1 Not Supported
Claude Opus 5 Not Supported
Claude Opus 5.5 Not Supported
Claude Sonnet 5.5 Not Supported
GPT-5.6 Sol Not Supported
GPT-5.6 Sol Ultrafast Not Supported
GPT-5.6 Terra Not Supported
OpenAI Supported
Replit Supported
Slack Supported
Stripe Supported
Telegram Supported

Integrations

ChatGPT Supported
Claude Fable 5 Supported
Claude Fable 5.1 Supported
Claude Fable 5.5 Supported
Claude Haiku 5.5 Supported
Claude Mythos 5.1 Supported
Claude Opus 5 Supported
Claude Opus 5.5 Supported
Claude Sonnet 5.5 Supported
GPT-5.6 Sol Supported
GPT-5.6 Sol Ultrafast Supported
GPT-5.6 Terra Supported
OpenAI Not Supported
Replit Not Supported
Slack Not Supported
Stripe Not Supported
Telegram Not Supported
Claim Agent 3 and update features and information
Claim Agent 3 and update features and information
Claim App0 and update features and information
Claim App0 and update features and information