E2B
E2B gives each agent session an isolated microVM sandbox for running code, desktop interactions, and tools either in E2B’s cloud or inside your AWS/GCP account. The runtime is open-source (Apache‑2.0), sessions are metered per second, and tiers include Hobby, Pro, and Enterprise.
Hobby: free starter tier with $100 one-time usage credit and session limits; Pro: $150/month base plus per-second usage; Enterprise: custom pricing with a documented $3,000/month minimum requirement and per-second usage.Is E2B right for you?
Good for
- Teams that need fully isolated agent runtime microVMs to run code, simulate desktops, or operate on internal data with the option to BYOC (bring your own cloud).
- Provides a dedicated, fully isolated microVM per agent session enabling code execution, file storage, secrets, and observability.
- Open-source runtime under Apache-2.0, allowing self-hosting and inspection of the runtime stack.
Keep in mind
- Costs are metered per second of sandbox runtime, so long-running workloads require careful cost estimation.
- VM startup latency is acknowledged; sessions boot from snapshots to speed starts but the site states VMs are slow to start.
- Confirm expected runtime hours and cost model fit before purchase, because charging is metered per second and long-running workloads require cost estimation against per-second rates.
Pricing and plan limits
Pricing pages list Hobby, Pro ($150 /month base), and Enterprise (custom) with per-second usage rates; detailed numeric per-vCPU and per-GiB per-second costs are published. The linked official pages do not list per-feature billing exceptions or long-term committed discount schedules.
More about capabilities and limits
Documented strengths
Provides a dedicated, fully isolated microVM per agent session enabling code execution, file storage, secrets, and observability.
Open-source runtime under Apache-2.0, allowing self-hosting and inspection of the runtime stack.
Limitations to consider
Costs are metered per second of sandbox runtime, so long-running workloads require careful cost estimation.
VM startup latency is acknowledged; sessions boot from snapshots to speed starts but the site states VMs are slow to start.
Choosing a plan
Estimate costs by modeling expected sandbox session durations and concurrency against published per-second rates and plan concurrency caps, then run a small set of representative workloads to confirm startup latency and total cost.
Based on the linked product documentation.
Available on
Web.
Official sources
Alternatives to E2B
Choose around the work you need to do.