A machine per agent session. When an agent writes code it did not have at deploy time, that code has to run somewhere that is not your server — E2B gives it a Firecracker microVM with its own kernel, started in milliseconds, exposing shell, filesystem, network, storage, a graphical Linux desktop for computer-use agents, lifecycle and metrics through an API. Sessions can persist and be resumed, so multi-day work survives. Core runtime is open source; you can run their cloud, put the data plane in your own cloud (BYOC), or self-host.
| Industry | AI & Machine Learning |
| Funding | |
| Stage | Series A |
| Website | Visit E2B |
Where E2B sits against the other names we cover on this beat. Each line is that company’s verdict, not a summary of it.
The 2026-07-30 print settled four of the five questions the prior dossier said it could
Cash $78.2B