Open source - verified
E2B Runtime / E2B Embed (open source)
E2B Runtime / E2B Embed (open source) is an open-source runtime from E2B, read from its own pages on October 18, 2026. Isolation: One Firecracker microVM per sandbox with per-sandbox egress firewall. Pricing is not stated: Open-source software; no price stated. Infrastructure costs are not covered by the checked pages.
Vendor: E2B. Docs: github.com. Compare every agent sandbox
- Price rows
- 0
- Vendor claims
- 0
- Not stated
- 8
- Verified quotes
- 6
Pricing
In the provider's own unit, verbatim. Nothing is converted; the directory compares a price only with others in the same unit.
Not stated
Note: Open-source software; no price stated. Infrastructure costs are not covered by the checked pages.
- Free tier or credits
- Not stated
Note: Not applicable (open-source software).
Limits, lifecycle and isolation
- Max session duration
- Not stated
Note: Not stated in the checked source pages.
- Idle timeout and auto-pause
- Not stated
Note: Not stated in the checked source pages.
- Persistence and snapshots
Snapshot resume and pause
“Firecracker microVMs that resume from a snapshot, run untrusted agent code, and pause when the agent stops.”
github.com - Isolation
One Firecracker microVM per sandbox with per-sandbox egress firewall
“One Firecracker microVM per sandbox, in its own cgroup and network namespace, with a per-sandbox nftables egress firewall and SNI/Host-inspecting domain allow and deny lists.”
github.com - CPU and memory limits
- Not stated
Note: Not stated in the checked source pages.
- GPU
- Not stated
Note: Not stated in the checked source pages.
- Egress controls
Per-sandbox nftables egress firewall with domain allow and deny lists
“with a per-sandbox nftables egress firewall and SNI/Host-inspecting domain allow and deny lists.”
github.com - SDKs and languages
- Not stated
Note: Not stated in the checked source pages.
- Regions
- Not stated
Note: Not stated in the checked source pages.
- Open source
Apache-2.0 (Go)
“It is written in Go, licensed under Apache-2.0, and built by E2B.”
github.com - Self-host or BYOC
E2B Embed runs the whole stack on a single Linux host with KVM
“E2B Embed is the whole stack, real Firecracker sandboxes included, on a single Linux host with KVM.”
github.com - Status
- Not stated
Note: No release status stated in the checked repository page.
Other facts
Embed deployments cannot tunnel sandbox egress through a SOCKS5 proxy
“including E2B Embed, cannot tunnel sandbox egress through a SOCKS5 proxy”
docs.e2b.dev
The hosted product: E2B.
FAQ
How much does E2B Runtime / E2B Embed (open source) cost?
Not stated. Open-source software; no price stated. Infrastructure costs are not covered by the checked pages.
What isolation does E2B Runtime / E2B Embed (open source) use?
One Firecracker microVM per sandbox with per-sandbox egress firewall.
How long can a session run on E2B Runtime / E2B Embed (open source)?
Not stated. Not stated in the checked source pages. Idle behavior: Not stated. Not stated in the checked source pages.
Does E2B Runtime / E2B Embed (open source) restrict outbound network access?
Per-sandbox nftables egress firewall with domain allow and deny lists.
Sources
Last verified from each provider's own docs, pricing pages and repositories; every quote was string-matched against the page that day. Not a benchmark: prices are in the provider's own unit and change without notice, so check the linked source before you commit.
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