When was E2B founded?

E2B was founded in 2023 and raised its 1st funding round within a year of its incorporation.

Where is E2B located?

E2B is headquartered in San Francisco, United States.

Who is the current CEO of E2B?

Vasek Mlejnsky of E2B. They have also founded 1 company.

How many employees does E2B have?

As of Jul 31, 2026, the latest employee count at E2B is 45.

Is E2B a funded company?

E2B is a funded company, having raised a total of $35M across 3 funding rounds to date. The company's 1st funding round was a $***** Seed round, raised on Sep 06, 2023.

When was the latest funding round of E2B?

E2B's latest funding was a $***** Series A round on Jul 27, 2025, with participation from 5 investors.

Where does E2B rank among its competitors?

E2B ranks 8th amongst 385 active competitors, of which 59 are funded. It stands 2nd in terms of total funding among its competitors. The most recent competitor to raise funding was Judgment, which secured an undisclosed amount in May, 2026.

Who are the top competitors of E2B?

E2B's top competitors include Openlayer, Lattice Flow and TurinTech. Among them, Judgment secured the most recent funding round in May, 2026.

E2B - 2026 Company Profile, Team, Funding & Competitors

E2B is a series A company based in San Francisco (United States), founded in 2023 by Vasek Mlejnsky. It operates as a Developer of open-source runtime for executing AI-generated code in secure sandboxes. E2B has raised $35M in funding from investors like Insight Partners, Decibel and KAYA. The company has 385 active competitors, including 59 funded and 9 that have exited. Its top competitors include companies like Openlayer, Lattice Flow and TurinTech.

Company Details

Developer of open-source runtime for executing AI-generated code in secure sandboxes. The runtime is designed for agentic and artificial intelligence use cases. It allows users to securely run code snippets and autonomous agents. The runtime supports various languages and frameworks, facilitating code execution, input/output operations, and internet access.

Website: e2b.dev
Social
Email ID: *****@e2b.dev

Key Metrics

Founded Year

2023

Location

San Francisco, United States

Stage

Series A

Total Funding

$35M in 3 rounds

Latest Funding Round

Series A, Jul 27, 2025, $*****

Investors

Insight Partners & 11 more

Ranked

8^th among 385 active competitors

Employee Count

45 as on Jul 31, 2026

Similar Companies

Openlayer & 338 more

View E2B's full profile

E2B has raised a total funding of $35M over 3 rounds. Its first funding round was on Sep 06, 2023. Its latest funding round was a Series A round on Jul 27, 2025 for $*****. 5 investors participated in its latest round. E2B has 5 institutional investors and 7 angel investors.

Here is the list of recent funding rounds of E2B:

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Jul 27, 2025	8075996	Series A	7411897	1660077	4303200	2686689
Oct 18, 2024	9231977	Seed	6924415	8579683	2688982	KAYA & 1 more
Sep 06, 2023	6345442	Seed	4620445	2875292	KAYA	Liu Jiang & 3 more

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View details of E2B's funding rounds and investors

The founders of E2B is Vasek Mlejnsky. Vasek Mlejnsky is the CEO of E2B.

Here are the details of E2B's key team members:

Vasek Mlejnsky: Co-Founder & CEO of E2B.
Contact Info: 1 email address

View details of E2B's Founder profiles and Board Members

E2B's employee count trend

E2B has 45 employees as of Jul 26. Here is E2B's employee count trend over the years:

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Top competitors of E2B include Openlayer, Lattice Flow and TurinTech. Here is the list of Top 10 competitors of E2B, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Openlayer 2021, San Francisco (United States), Series A	Provider of AI evaluation and observability platform for enterprise applications	$19.4M	Y Combinator, Quiet Capital & 22 others	62/100
2nd	Lattice Flow 2020, Switzerland, Series A	Provider of an AI-based platform for building and deploying machine learning models	$14.8M	Global Founders Capital, b2venture & 7 others	62/100
3rd	TurinTech 2017, London (United Kingdom), Series A	Provider of AI development services	$16.3M	IQ Capital, Deep Vision Capital & 3 others	61/100
4th	Adaptive ML 2023, New York City (United States), Acquired	Cloud-based platform for building and testing large language models	$20M	Index Ventures, Motier & 5 others	61/100
5th	Latent AI 2018, Menlo Park (United States), Series A	Provider of an ML optimisation platform for edge applications	$22.5M	Future Ventures, Blackhorn Ventures & 12 others	57/100
6th	SplxAI 2023, United States, Acquired	Provider of AI powered pentesting solutions	$8.99M	LAUNCHUB, Inovo Venture Partners & 6 others	57/100
7th	Prophet Security 2023, Atherton (United States), Series A	Provider of an AI SOC platform with agentic AI analyst	$41M	Accel, Citi Ventures & 2 others	56/100
8th	E2B 2023, San Francisco (United States), Series A	Developer of open-source runtime for executing AI-generated code in secure sandboxes	$35M	Insight Partners, KAYA & 10 others	43/100
9th	Judgment 2025, San Francisco (United States), Series A	Provider of agent behavior monitoring toolkit for production agent reliability	$32M	Lightspeed Venture Partners, Valor Equity Partners ... & 4 others	55/100
10th	Promptfoo 2023, San Francisco (United States), Acquired	Open-source tool to test AI applications	$23.6M	Insight Partners, Andreessen Horowitz & 3 others	54/100