E2B
What E2B is
E2B provides isolated Linux machines for AI agents, with infrastructure managed by E2B or deployed in a customer's cloud. Each agent session runs in a Firecracker microVM with its own kernel and an API for execution, networking, storage, secrets, observability, and lifecycle management. Its Code Interpreter SDK runs Python or JavaScript and can return charts, tables, and images. Desktop supplies a screen, mouse, keyboard, and live stream for computer-use agents. E2B lists integrations with SDKs and frameworks including CrewAI, Agno, Mastra, OpenAI Agents SDK, Google ADK, and LangChain Deep Agents. E2B Cloud is available in US, EU, and APAC regions. Enterprise BYOC places sandboxes in a customer's AWS, Google Cloud, or Azure account. The runtime is Apache-2.0 licensed and self-hostable. Hobby is free plus usage costs and includes a one-time $100 usage credit, sessions up to one hour, and 20 concurrent sandboxes. Pro costs $150 per month plus usage costs; sessions can run up to 24 hours, with 100 concurrent sandboxes, expandable to 1,100.
Who it suits
E2B suits developers building AI agents that need isolated execution environments. Enterprise BYOC is available for customers who want sandboxes in their own cloud account.
What it does well
- Each sandbox has its own Firecracker microVM and kernel.
- Code Interpreter supports Python and JavaScript.
- Cloud regions include US, EU, and APAC.
- Runtime is Apache-2.0 licensed and self-hostable.
What to know first
- Hobby sessions are limited to one hour.
- Hobby includes 20 concurrent sandboxes.
- Pro costs $150 per month plus usage costs.
- BYOC is available on Enterprise plans.
Limits
Hobby includes a one-time $100 usage credit, sessions up to one hour, and 20 concurrent sandboxes with default CPU and RAM. Pro costs $150 a month plus usage costs; sessions can run up to 24 hours and concurrency is 100 by default, expandable to 1,100.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Hobby | $100 one-time usage credit; additional usage costs · sessions up to 1 hour · 20 concurrent sandboxes · default CPU and RAM · 10 GiB storage | Free |
| Pro | + Usage Costs; billed through Stripe · sessions up to 24 hours · 100 concurrent sandboxes, expandable to 1,100 · custom CPU and RAM · 20 GiB storage | $150 a month |
| Enterprise | Committed usage and custom billing; $3,000/month minimum · multi-day and persistent sessions · tens of thousands of concurrent sandboxes · custom sizes · BYOC deployment | On request |
As e2b.dev lists them, read 15 Oct 2026. The maker's own page has the final word.
Getting started
- Visit the E2B website.
- Choose the free Hobby plan or a paid plan that matches your session and concurrency needs.
- Use an E2B-supported SDK or framework to connect an agent.
- Choose E2B Cloud, or use Enterprise BYOC to deploy in AWS, Google Cloud, or Azure.
- Use the Code Interpreter SDK for Python or JavaScript execution, or Desktop for computer-use agents.
Verdict
E2B offers managed or self-hosted isolated environments with APIs, code interpretation, and desktop support for agents. The free plan has session and concurrency limits, while Pro adds longer sessions for a monthly fee plus usage costs.
Questions
Is there a free plan?
Yes. Hobby is free and includes a one-time $100 usage credit, sessions up to one hour, and 20 concurrent sandboxes.
How much does Pro cost?
Pro costs $150 a month plus usage costs.
What does Enterprise cost?
The Enterprise plan is listed with custom pricing plus usage costs.
Can E2B run in a customer's cloud?
Enterprise BYOC places sandboxes inside the customer's AWS, Google Cloud, or Azure account.
Is the runtime open source?
E2B says its runtime is licensed under Apache-2.0 and can be self-hosted.
Which agent frameworks and SDKs are supported?
E2B lists CrewAI, Agno, Mastra, Claude Managed Agents SDK, OpenAI Agents SDK, Google ADK, LangChain Deep Agents, and Vercel AI SDK.
Facts from E2B's own pages
- API
- A public HTTP API is available at api.e2b.app and authenticates with an API key. · anchorterminal.com, 15 Oct 2026
- Cloud regions
- E2B Cloud is available in US, EU, and APAC regions. · e2b.dev, 29 Sept 2026
- Code execution
- Sandboxes expose command execution, code execution, PTY access and full desktop environments. · e2b.dev, 15 Oct 2026
- Code Interpreter
- The Code Interpreter SDK adds runCode or run_code execution for Python and JavaScript and returns charts, tables and images. · e2b.dev, 15 Oct 2026
- Company
- E2B says it began as a project in March 2023, founded by Tomas Valenta and Vasek Mlejnsky. · e2b.dev, 29 Sept 2026
- Company facts
- LinkedIn lists E2B as privately held, founded in 2023, headquartered in San Francisco and employing 51–200 people. · linkedin.com, 15 Oct 2026
- Company legal entity
- The service provider is FoundryLabs, Inc., a Delaware corporation doing business as E2B. · changelog.e2b.dev, 15 Oct 2026
- Compliance
- E2B maintains a SOC 2 Type II report and signs HIPAA Business Associate Agreements on Enterprise plans. · e2b.dev, 29 Sept 2026
- Deployment
- BYOC places sandboxes inside the customer's AWS, Google Cloud, or Azure account and is available on Enterprise plans. · e2b.dev, 29 Sept 2026
- Deployment regions
- E2B Cloud lists US, EU and APAC regions, while BYOC supports AWS, Google Cloud and Azure accounts. · e2b.dev, 15 Oct 2026
- Desktop automation
- The Desktop SDK supplies mouse, keyboard, screenshots, application launching and live desktop streaming APIs. · github.com, 15 Oct 2026
- Desktop use
- Desktop provides a screen, mouse, keyboard, and live stream for computer-use agents. · e2b.dev, 29 Sept 2026
- Documentation depth
- Documentation contains quickstarts, examples, SDK method references, API references, an llms.txt index and an unauthenticated MCP documentation server. · docs.e2b.dev, 15 Oct 2026
- Encryption
- Managed sandboxes use Google Cloud default encryption at rest and TLS in transit. · changelog.e2b.dev, 15 Oct 2026
- Filesystem
- The platform provides persistent filesystem storage and supports file upload and download operations. · e2b.dev, 15 Oct 2026
- Funding
- Crunchbase lists E2B as a private Series A company in San Francisco with 14 investors, including Operator Collective and KAYA. · crunchbase.com, 15 Oct 2026
- Integrations
- Listed integrations include OpenAI Agents SDK, Claude Code, Codex, CrewAI, Agno, Mastra, Google ADK, LangChain, Vercel AI SDK and MCP servers. · e2b.dev, 15 Oct 2026
- Isolation
- Each sandbox runs in its own Firecracker microVM and kernel, without sharing a filesystem or memory with another customer's sandboxes. · e2b.dev, 29 Sept 2026
- Latest deployment news
- On September 30, 2026 E2B announced Embed for packaging the runtime and dashboard to run inside a customer's environment. · changelog.e2b.dev, 15 Oct 2026
- Latest product news
- On October 7, 2026 E2B announced Secrets, which injects credentials into configured HTTPS request headers while keeping them outside the sandbox. · changelog.e2b.dev, 15 Oct 2026
- License
- The runtime and published infrastructure are licensed Apache-2.0. · github.com, 15 Oct 2026
- Lifecycle
- Sandboxes can be paused, resumed, snapshotted and forked. · e2b.dev, 15 Oct 2026
- Limit: documentation and configuration
- Agent Reviews reports documentation, configuration and missing capabilities as the most common problem categories. · agent.reviews, 15 Oct 2026
- Limit: outages and enterprise gaps
- Anchor Terminal documented two major September 2026 incidents, no published SLA, no idempotency keys and no audit log or scoped project keys found. · anchorterminal.com, 15 Oct 2026
Where E2B stands on Freedom251
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