E2B
Category: AI Infrastructure
E2B provides a secure, open-source cloud runtime environment for AI applications and agents to execute LLM-generated code in isolated sandboxes. E2B was founded in 2023. The company is led by Vasek Mlejnsky. Based in Prague, Czech Republic & San Francisco, USA. Team size: 11-50. Total funding raised: $32 million. Latest round: Series A. Key investors include Insight Partners, Decibel, Sunflower Capital, Kaya, Scott Johnston.
- Founded
- 2023
- Headquarters
- Prague, Czech Republic & San Francisco, USA
- Team size
- 11-50
- Total funding
- $32 million
Value proposition
To provide a secure, scalable, and easy-to-use infrastructure for running potentially untrusted AI-generated code, enabling developers to build more powerful and reliable AI applications without compromising on security.
Products and solutions
E2B Sandbox: Secure cloud environments for running AI code., Code Interpreter SDK: Python and JavaScript/TypeScript SDKs for integrating the sandbox into AI applications., Custom Sandboxes: Tailored environments for specific use cases like data analysis or web development., AI Artifacts: An open-source platform to create and deploy full-stack applications using AI.
Unique value
E2B's uniqueness lies in its focus on creating secure, lightweight, and scalable virtualized environments (sandboxes) specifically for the demands of AI-generated code. Unlike general-purpose cloud infrastructure, E2B is purpose-built for AI agents and applications. Its open-source nature fosters community trust and collaboration.
Target customer
AI developers, startups, and enterprises building AI-powered applications, particularly those requiring code execution, data analysis, or agentic workflows.
Industries served
Artificial Intelligence, Developer Tools, Software Development
Technology advantage
The core technological advantage is the custom-built sandbox infrastructure that ensures security and isolation while being fast and scalable. The business advantage is its position as a critical enabler for the growing ecosystem of AI applications, offering a foundational tool that developers need to build and deploy agentic AI safely.
How they differentiate
E2B provides a secure, sandboxed cloud environment specifically designed for AI agents and AI-generated code, focusing on ease of use and integration for developers.
Main competitors
Daytona, Modal, Vercel Sandbox
Key partnerships
Docker (MCP Catalog partnership, Oct 2025), LangChain / framework integrations, OpenAI Agents SDK support
Notable customers
Hugging Face, Perplexity, Groq, Manus, LMArena, Genspark, Lindy, Rogo, Gumloop
Major milestones
Raised $21M Series A led by Insight Partners (Jul 2025); total funding $32M., Reached 94% Fortune 100 adoption and 1B+ sandboxes started., Docker MCP Catalog partnership (Oct 2025)., OpenAI Agents SDK support (Apr 2026).
Growth metrics
Used by 94% of Fortune 100 companies; 1B+ sandboxes started; 7M+ monthly downloads.
Market positioning
E2B is positioned as the enterprise AI agent cloud / open-source sandbox standard, targeting developers and enterprises that need secure code execution for agents. Claims 94% Fortune 100 adoption and 1B+ sandboxes started.
Geographic focus
While the company has offices in the USA (San Francisco) and the Czech Republic (Prague), its geographic focus is global, with a significant customer base in the United States.
Patents and IP
Information on patents or IP is not publicly available.
About Vasek Mlejnsky
Co-founder of E2B. Previously a software engineer at Strv, a US-based software design and engineering company.
More AI Infrastructure companies
Official website: https://e2b.dev
