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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
CopilotKit is a powerful development platform focused on enabling teams to create intelligent, AI-driven applications with advanced frontend capabilities. It introduces an agentic frontend architecture that connects applications to backend AI agents using the AG-UI protocol for real-time, two-way interaction. The platform offers a range of SDKs and tools that simplify integration with popular frameworks like React, Angular, and Vue. Its generative UI functionality allows AI agents to directly control and render user interface elements, creating dynamic and responsive experiences. CopilotKit also provides built-in chat components, conversation threading, and persistence features to maintain context and improve usability. Developers can bring their own AI models, frameworks, and agents, giving them flexibility in building customized solutions. The platform supports integration with leading AI ecosystems and tools, making it suitable for enterprise-scale deployments. Many Fortune 500 companies use CopilotKit to enhance their applications with AI-powered features. It reduces development complexity while enabling faster implementation of intelligent interfaces. The system also supports real-time updates, interactive workflows, and improved user engagement. By combining frontend flexibility with backend AI connectivity, CopilotKit helps organizations build next-generation digital experiences.
API Access
Has API
API Access
Has API
Pricing Details
Free
Free Trial
Free Version
Pricing Details
$39/developer/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
CopilotKit
Founded
2023
Country
United States
Website
www.copilotkit.ai/