E2B
Agent Runtime & Sandboxes · Free
Isolated cloud sandboxes for running AI-generated code
At a glance
- Made by
- FoundryLabs, inc. (dba E2B)
- Korean
- None (English and a few others only)
- API
- Yes
- Available on
- API, CLI
- Open source
- Apache-2.0
- GitHub
- 14,338 stars · Apache-2.0
What is E2B?
E2B is a cloud that runs the isolated machines your agents work in, so you only need to build the agent. Each session launches one Linux microVM and provides code execution, network control, file storage, secret storage, and pause and fork through an API. It runs with the same SDK and API on the E2B cloud (US, EU, and Asia-Pacific) or in the customer's own AWS, GCP, or Azure account (BYOC). It offers JavaScript and Python SDKs and can also be self-hosted with Terraform.
- Run commands, code, PTY, and a full desktop
- Policy-based inbound and outbound network control
- Persistent filesystem and bucket mounting
- Metrics, logs, and signed webhooks
- Secret storage that agents can use but cannot read
- Pause, resume, snapshot, and fork
- Call 200+ MCP servers from inside the sandbox
- Bring your own cloud (BYOC) and self-hosting
Who uses E2B and for what
- Launch coding sub-agents from a prompt to build an app and serve it right away
- Reinforcement learning: spin up thousands of machines for grading
- Agent evaluation and benchmarks
Pricing
What you get for free — Yes (Hobby: one-time $100 usage credit, sessions up to 1 hour, 20 concurrent, no card required)
| Plan | Price | Main limits |
|---|---|---|
| Hobby | $0 | One-time $100 usage credit + usage fees, 1-hour sessions, 20 concurrent sandboxes |
| Pro | $150/mo | + per-second usage fees, 24-hour sessions, 100 concurrent (expandable up to 1,100) |
| Pro+ additional concurrent runs | $500/mo | 600 concurrent sandboxes add-on |
| Pro++ additional concurrent runs | $1,000/mo | 1,100 concurrent sandboxes add-on |
| Enterprise | Contact sales | Custom billing, $3,000 monthly minimum, BYOC |
| 1 vCPU | $0 | Per second |
| 1 GiB memory | $0 | Per second |
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying. · Official pricing page
AI tools similar to E2B (alternatives)
E2B vs. alternatives at a glance
| AI | Pricing | Combos on the map | Connected tools | Free | Cheapest monthly | Korean |
|---|---|---|---|---|---|---|
| E2B | Free | 0 | 2 | Yes | $150/mo | No |
| Daytona | Free | 0 | 2 | Yes | — | No |
| Modal Sandboxes | Free + paid | 0 | 2 | Yes | $250/mo | No |
3 of these 3 tools have a free plan. Cheapest paid plan: E2B ($150/mo).
Combo and connection counts are based on the relationships recorded on AI Galaxy Map (2026-10-26); they are not a quality ranking.
E2B on AI Galaxy Map
- One of 5 AI tools in the Agent Runtime & Sandboxes field.
- Connected to 2 other tools — #1 in its field.
Frequently asked questions
Can I use E2B for free?
Yes (Hobby: one-time $100 usage credit, sessions up to 1 hour, 20 concurrent, no card required). Prices can change, so check the official site before paying.
What AI can I use instead of E2B?
Tools that do the same job, such as Daytona, Modal Sandboxes, are connected to it on the map.
Can I use E2B in Korean?
None (English and a few others only)
Sources (official pages)
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying.