Hard facts side by side: free tiers, prices, limits, SDKs and privacy. Every value links to the official page it came from and is re-checked every week.
| Fact | E2BBuilding block |
|---|---|
| Free tier | Yes Hobby plan: $0 a month with one-time $100 usage credits, 20 concurrent sandboxes, 1 hour sessions. Source, Oct 11, 2026 |
| Starting price | $0.000014 per vCPU-second Plus $0.0000045 per GiB-second of RAM. The Pro plan adds a $150 monthly fee on top of usage. Source, Oct 11, 2026 |
| Rate limit | 10 requests per second Hobby: 10 requests per second per endpoint, per project. Pro: 20 per second. Enterprise: custom. Source, Oct 11, 2026 |
| Size limit | 1 hour per session Hobby: 1 hour sessions, 20 concurrent sandboxes, up to 8 vCPUs and 8 GiB RAM. Pro: 24 hours, 100 concurrent. |
| Storage | 10 GiB disk Hobby 10 GiB, Pro 20 GiB. Storage is included with every plan at no extra cost. Source, Oct 11, 2026 |
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| Official SDKs | PythonJavaScript / TypeScript Python and JavaScript/TypeScript SDKs. Source, Oct 11, 2026 |
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| Open source | Yes Official repository is published under the Apache-2.0 licence. Source, Oct 11, 2026 |
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| EU hosting | Yes Shared EU cluster for Pro plan and above; access is set up by contacting support. Source, Oct 11, 2026 |
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| Compliance | SOC 2 SOC 2 Type II. A HIPAA business associate agreement can be requested on Enterprise plans. Source, Oct 11, 2026 |
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