E2B
Free tierThe agent cloud — Every agent gets a machine
Key strengths
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E2B — Isolated MicroVM Sandboxes for AI Agents
E2B is an open-source (Apache-2.0) cloud runtime that provisions an isolated microVM per agent session, giving every agent its own secure, ephemeral machine. Sandboxes boot at container speed via snapshot-based instantiation, and support pause, resume, snapshot, and fork operations — enabling stateful, long-running agent workflows.
Key technical characteristics:
- Isolation model: One Firecracker-based microVM per sandbox session
- Boot mechanism: Snapshot-based cold starts at container-equivalent speed
- Session limits: Up to 1 hr (Hobby), 24 hr (Pro), multi-day (Enterprise)
- Concurrency: 20 (Hobby) → 100 (Pro) → tens of thousands (Enterprise) concurrent sandboxes
- API: Full API available for programmatic sandbox lifecycle management
- Self-hostable: Yes — BYOC deployment on AWS, GCP, or Azure
- Compliance: SOC 2 Type II and HIPAA certified
- Scale: 2B+ sandboxes started in production
Integrations: OpenAI Agents SDK, Claude Code, Codex, Cursor, Devin, Manus, Anthropic, OpenAI, MCP (200+ servers), AWS, GCP, Azure, Firecracker.
Pricing: Freemium. Hobby (free, $100 one-time credit) → Pro ($150/month + per-second usage billing) → Enterprise (custom, committed usage, BYOC).