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Description

21st is a development platform designed to help engineers quickly build and deploy AI agents inside their applications. The platform provides a specialized SDK that simplifies the process of defining agent behavior, integrating tools, and connecting AI models. Developers can create agents using familiar technologies such as Next.js, React, TypeScript, Python, and Node.js, making integration straightforward for modern applications. Once an agent is defined, the platform allows it to be deployed with a single command while automatically handling infrastructure requirements. 21st provides sandboxed execution environments through E2B sessions, ensuring that agent operations run securely and independently. The platform includes a ready-to-use chat interface component that can be embedded directly into an app for user interaction. Additional features include token streaming, conversation history, tool execution, and built-in observability for debugging and monitoring. Developers can replay sessions and trace tool calls to better understand how agents behave during execution. The system also supports spend limits, authentication controls, and rate limiting to manage AI usage across users. By combining development tools with managed infrastructure, 21st helps teams launch scalable AI agents without building complex backend systems.

Description

v0 is a next-generation AI development environment created by Vercel, designed to accelerate the way individuals and teams build for the web. Acting as a 24/7 pair-programmer, v0 understands natural language and converts ideas into production-ready code using frameworks like React, Svelte, and Vue. Users can upload Figma files, screenshots, or sketches, which v0 transforms into pixel-perfect, responsive applications. Beyond frontend generation, v0 supports full-stack builds with authentication, database connections, and API integrations. It offers seamless editing, GitHub synchronization, and instant deployment to Vercel’s hosting environment, allowing developers to go from idea to live app in minutes. The platform includes team collaboration tools, version history, and customizable workflows for designers, developers, and project managers alike. Security and compliance are central to its design, with SOC 2 Type 2 certification ensuring enterprise-grade protection. Whether you’re prototyping an MVP or scaling a complex system, v0 simplifies the entire lifecycle—from prompt to production.

API Access

Has API

API Access

Has API

Screenshots View All

Screenshots View All

Integrations

React
Tailwind CSS
shadcn/ui
Boxo
CSS
Clerk
Ekinox
Figma
Git
HTML
Next.js
PromptDC
Shaders
Supabase
Supadev
Svelte
Upstash
VibeScan
Vue.js
vibecodeprompts

Integrations

React
Tailwind CSS
shadcn/ui
Boxo
CSS
Clerk
Ekinox
Figma
Git
HTML
Next.js
PromptDC
Shaders
Supabase
Supadev
Svelte
Upstash
VibeScan
Vue.js
vibecodeprompts

Pricing Details

Free
Free Trial
Free Version

Pricing Details

$20 per month
Free Trial
Free Version

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Vendor Details

Company Name

21st.dev

Website

21st.dev/

Vendor Details

Company Name

Vercel

Founded

2015

Country

United States

Website

v0.app/

Product Features

Product Features

Web Design

Autocompletion
Collaborative Editing
Content Management
Drag & Drop
Element Libraries
Programming Language Support
Syntax Highlighting
Templates

Alternatives

Alternatives

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