# E2B

> E2B is an open-source cloud runtime that gives AI agents secure, isolated environments to execute code and use real-world tools. Built on Firecracker microVMs that boot in under 200 milliseconds, E2B lets developers and enterprises spin up disposable Linux sandboxes where AI-generated code runs without touching production systems. Founded in 2023 by Czech engineers Vasek Mlejnsky and Tomas Valenta, the company raised a $21M Series A led by Insight Partners in July 2025 and reports adoption across roughly 88% of the Fortune 100, including Perplexity, Hugging Face, Groq and Manus.

- **Founded:** 2023
- **Headquarters:** San Francisco, California, United States
- **Founders:** Vasek Mlejnsky (Co-Founder & CEO), Tomas Valenta (Co-Founder & CTO)
- **Team size:** ~25 employees
- **Products:** E2B Sandbox, Code Interpreter SDK, E2B Desktop, Enterprise modules
- **Notable:** Raised $21M Series A in July 2025, bringing total funding to ~$32M, Adopted by ~88% of the Fortune 100, Ran hundreds of millions of sandboxes since late 2024

## Products & services

- **E2B Sandbox** — On-demand, Firecracker microVM-isolated Linux environments that boot in under 200ms for securely running AI-generated code and agent workflows.
- **Code Interpreter SDK** — Python and TypeScript SDKs that let AI applications run generated code securely inside an isolated sandbox.
- **E2B Desktop** — Virtual desktop / computer-use environment enabling LLMs to control a full GUI (Chrome, apps) safely.
- **Enterprise modules** — Planned/rolling enterprise features including a Secrets Vault, Sandbox Observability, Shared Context, and BYOC / on-prem deployment.

## Achievements

- Raised $21M Series A in July 2025, bringing total funding to ~$32M
- Adopted by ~88% of the Fortune 100
- Ran hundreds of millions of sandboxes since late 2024
- 2M+ monthly SDK downloads
- Flagship open-source repo surpassed ~12k GitHub stars
- Sandboxes boot in under 200 milliseconds on Firecracker microVMs

## Latest updates

- **2025-07** — Raised $21M Series A led by Insight Partners to build cloud infrastructure for Fortune 100 AI agents.
- **2025** — Reported ~88% Fortune 100 adoption and rollout of enterprise modules (Secrets Vault, Sandbox Observability, Shared Context, BYOC).
- **2025-02** — CEO Vasek Mlejnsky featured in podcast/YouTube interview on why AI agents need better infrastructure.

## Links

- Website: https://e2b.dev
- LinkedIn: https://www.linkedin.com/company/e2b-dev
- Twitter/X: https://twitter.com/e2b_dev
- GitHub: https://github.com/e2b-dev

---

Profile page: https://yespress.io/e2b
Published by YesPress — https://yespress.io
Last updated: 2026-07-12