Both are open source security options with comparable terms, so the choice comes down to which model of the problem you prefer — compare the descriptions below rather than the licence.
Google's user-space kernel. Intercepts syscalls before they reach the host, without paying for a full VM.
Fast to start, but 10-30% overhead on I/O-heavy work. Good for compute-bound agent code; reach for a microVM if the threat model is serious.
Firecracker sandboxes for running code the agent wrote, safely.
If the agent writes code that then runs, this layer is not optional.
| gVisor | E2B | |
|---|---|---|
| Licence | Open source | Open source |
| Pricing | open source | freemium |
| Self-hostable | Yes | Yes |
| Languages | Any language | Python, TypeScript |
| Install | # runsc — see https://gvisor.dev/docs/user_guide/install/ | npm install @e2b/code-interpreter |
| Keys required | None | E2B_API_KEY |
| Job within the layer | sandbox | sandbox |
Both are open source security options with comparable terms, so the choice comes down to which model of the problem you prefer — compare the descriptions below rather than the licence. gVisor: Google's user-space kernel. Intercepts syscalls before they reach the host, without paying for a full VM. E2B: Firecracker sandboxes for running code the agent wrote, safely.
gVisor can run on your own infrastructure. E2B can run on your own infrastructure.
gVisor is open source (open source). E2B is open source (freemium).
Every page here answers to Accept: text/markdown and returns the same content at roughly a tenth the tokens. No separate site, no toggle — same URL.
curl -s -H "Accept: text/markdown" https://newagent.build/compare/gvisor-vs-e2b