E2B
Firecracker sandboxes for AI code with pause/resume (memory persists). Hobby free with one-time $100 credit, 1-hr sessions, 20 concurrent. Pro $150/mo: 24-hr sessions, 100 concurre
- Free credit
- $100
- Card required
- No
E2B scores 5.2/10 for free value in Agents. The main constraint: Paid — Free Hobby ($100 credit) or Pro $150/mo + usage. Firecracker sandboxes for AI code with pause/resume (memory persists). Hobby free with one-time $100 credit, 1-hr sessions, 20 concurrent. Pro $150/mo: 24-hr sessions, 100 concurrent (to 1,100). Usage: 2 vCPU $0.000028/s, RA.
Free value score
5.2 / 10Show the math
Key metrics
What you get
Paid — Free Hobby ($100 credit) or Pro $150/mo + usage. Firecracker sandboxes for AI code with pause/resume (memory persists). Hobby free with one-time $100 credit, 1-hr sessions, 20 concurrent. Pro $150/mo: 24-hr sessions, 100 concurrent (to 1,100). Usage: 2 vCPU $0.000028/s, RA
$100 free credit at ~$0.0000045/GiB/s goes a long way for experimentation; used by 88% of Fortune 100
Gotchas
- $100 one-time Hobby credit
The free Hobby tier includes a one-time $100 usage credit; once exhausted you must upgrade to Pro.
- 1-hour max session
Hobby sandboxes are limited to 1-hour sessions (Pro extends this to 24 hours).
- 20 concurrent sandboxes
Hobby is capped at 20 concurrent sandboxes; Pro raises this to 100+.
Sources
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"One-time $100 of usage in credits ... Up to 20 concurrently running sandboxes"
https://e2b.dev/pricing -
"Pro $150 /mo + Usage Costs ... Up to 24-hour sandbox session length ... Up to 100 concurrently running sandboxes"
https://e2b.dev/pricing
