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What is E2B?

E2B is a versatile open-source runtime designed to create a secure space for the execution of AI-generated code within isolated cloud environments. This platform empowers developers to augment their AI applications and agents with code interpretation functionalities, facilitating the secure execution of dynamic code snippets in a controlled atmosphere. With support for various programming languages such as Python and JavaScript, E2B provides software development kits (SDKs) that simplify integration into pre-existing projects. Utilizing Firecracker microVMs, it ensures robust security and isolation throughout the code execution process. Developers can opt to deploy E2B on their own infrastructure or utilize the offered cloud service, allowing for greater flexibility. The platform is engineered to be agnostic to large language models, ensuring it works seamlessly with a wide range of options, including OpenAI, Llama, Anthropic, and Mistral. Among its notable features are rapid sandbox initialization, customizable execution environments, and the ability to handle long-running sessions that can extend up to 24 hours. This design enables developers to execute AI-generated code with confidence, while upholding stringent security measures and operational efficiency. Furthermore, the adaptability of E2B makes it an appealing choice for organizations looking to innovate without compromising on safety.

What is 21st?

21st is a developer-focused platform designed to simplify the creation and deployment of AI agents within modern software applications. The platform provides an SDK that allows developers to define agents using simple code while integrating tools, prompts, and AI models. It supports multiple development environments and frameworks including Next.js, React, TypeScript, Python, Node.js, and other common programming stacks. Developers can configure agents to run on advanced runtimes such as Claude Code or Codex, enabling tool usage, file access, and intelligent task execution. Once the agent configuration is defined, deployment can be completed using a single command that automatically sets up infrastructure. The platform manages backend systems such as sandboxed execution environments, authentication, rate limits, and streaming responses. It also includes a drop-in chat interface component that developers can embed directly into their applications to enable user interaction with agents. Real-time token streaming allows users to see responses generated progressively, creating a more interactive experience. The platform provides built-in observability tools that allow developers to monitor conversations, replay sessions, and trace agent actions. These features make debugging and optimization much easier during development and production. 21st also includes usage controls such as per-user spending limits, quotas, and metering to help manage AI costs. By combining powerful developer tools with managed infrastructure and deployment capabilities, 21st makes it easier for teams to build and scale AI-powered agents within their products.

Media

Media

Integrations Supported

Amazon Web Services (AWS)
Assembly
Claude
CrewAI
Fireworks AI
Google Cloud Platform
Groq
JavaScript
LangChain
LangGraph
Meta AI
Mistral AI
Next.js
OpenAI
Python
Taam Cloud
Tailwind CSS
Together AI
TypeScript
Vercel

Integrations Supported

Amazon Web Services (AWS)
Assembly
Claude
CrewAI
Fireworks AI
Google Cloud Platform
Groq
JavaScript
LangChain
LangGraph
Meta AI
Mistral AI
Next.js
OpenAI
Python
Taam Cloud
Tailwind CSS
Together AI
TypeScript
Vercel

API Availability

Has API

API Availability

Has API

Pricing Information

Free
Free Trial Offered?
Free Version

Pricing Information

Free
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

E2B

Date Founded

2023

Company Location

United States

Company Website

e2b.dev/

Company Facts

Organization Name

21st.dev

Company Website

21st.dev/

Categories and Features

Categories and Features

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