E2B vs Sendblue Sandboxes

E2B costs $0.0504 per vCPU-hour and Sendblue Sandboxes costs $0.165 per vCPU-hour. E2B runs Firecracker microVMs and limits a session to 24 hours. Sendblue Sandboxes runs containers.

Updated Oct 15, 2026

E2B

Open-source sandbox platform that gives AI agents isolated machines.

Isolation: Firecracker microVM
Free tier: $100 credit, one time
Max session: 24 hours

Visit site E2B profile

Sendblue Sandboxes

Isolated cloud Linux machines that AI agents control over an HTTP API.

Isolation: Container
Free tier: $100 free compute, once per phone number
Max session: Not listed

Visit site Sendblue Sandboxes profile

What is different

8 fields differ. The rest are the same or not listed.

Field

E2B

Sendblue Sandboxes

vCPU, per hour: E2B: $0.0504; Sendblue Sandboxes: $0.165
RAM, per GiB-hour: E2B: $0.0162; Sendblue Sandboxes: Included
Free tier: E2B: $100 credit, one time; Sendblue Sandboxes: $100 free compute, once per phone number
Billing: E2B: Per second; Sendblue Sandboxes: Bundled machine time
Largest sandbox: E2B: 8 vCPU · 8 GiB; Sendblue Sandboxes: 2 vCPU · 8 GiB
Concurrent sandboxes: E2B: Up to 100; Sendblue Sandboxes: Up to 5
Isolation: E2B: Firecracker microVM; Sendblue Sandboxes: Container
Pause and resume: E2B:; Sendblue Sandboxes: No

Full comparison

18 fields, at each provider's list price

E2Be2b.dev/pricing

Sendblue Sandboxessendblue.com/sandboxessendblue.com

Pricing

vCPU, per hour: E2B: $0.0504; Sendblue Sandboxes: $0.165
RAM, per GiB-hour: E2B: $0.0162; Sendblue Sandboxes: Included
Storage: E2B: Free; Sendblue Sandboxes: Not listed
Free tier: E2B: $100 credit, one time; Sendblue Sandboxes: $100 free compute, once per phone number
Paid plan from: E2B: $150 / month; Sendblue Sandboxes: Not listed
Billing: E2B: Per second; Sendblue Sandboxes: Bundled machine time

Limits

Max session: E2B: 24 hours; Sendblue Sandboxes: Not listed
Idle stop: E2B: Not listed; Sendblue Sandboxes: After 10 minutes
Largest sandbox: E2B: 8 vCPU · 8 GiB; Sendblue Sandboxes: 2 vCPU · 8 GiB
Concurrent sandboxes: E2B: Up to 100; Sendblue Sandboxes: Up to 5

Platform

Isolation: E2B: Firecracker microVM; Sendblue Sandboxes: Container
GPU: E2B: No; Sendblue Sandboxes: Not listed
Snapshots: E2B:; Sendblue Sandboxes: Not listed
Pause and resume: E2B:; Sendblue Sandboxes: No

Developer

SDKs: E2B: Python, JavaScript / TypeScript; Sendblue Sandboxes: Not listed
Integrations: E2B: LangChain, OpenAI Agents SDK, Vercel AI SDK, MCP, Claude Code; Sendblue Sandboxes: Not listed

Trust

License: E2B: Apache-2.0; Sendblue Sandboxes: Not listed
BYOC: E2B: Enterprise plan; Sendblue Sandboxes: Not listed

Hourly cost

One sandbox running for one hour

Size

E2B

Sendblue Sandboxes

1 vCPU · 2 GiB: E2B: $0.083; Sendblue Sandboxes: $0.165
2 vCPU · 4 GiB: E2B: $0.166; Sendblue Sandboxes: $0.330
4 vCPU · 8 GiB: E2B: $0.331; Sendblue Sandboxes: $0.660

Compute only, at list rates.

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Which one fits

Based on the fields above

E2B fits when

You want each sandbox in its own microVM.
You want an open-source platform (Apache-2.0) that you can self-host.
You use LangChain, the OpenAI Agents SDK, the Vercel AI SDK, MCP or Claude Code.
You want the lower list price: $0.166 against $0.330 an hour for 2 vCPU and 4 GiB.

More comparisons

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E2B

Sendblue Sandboxes

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

E2B fits when

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