Celesto Cloud vs E2B

Celesto Cloud costs $0.015 per vCPU-hour and E2B costs $0.0504 per vCPU-hour. Celesto Cloud runs microVMs. E2B runs Firecracker microVMs and limits a session to 24 hours.

Updated Oct 14, 2026

Celesto Cloud

Cloud computers for AI agents, each in a microVM.

Isolation: MicroVM
Free tier: $5 runtime credit, one time, 30 days
Max session: Not listed

Visit site Celesto Cloud profile

E2B

Open-source sandboxes for AI-generated code.

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

Visit site E2B profile

What is different

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

Field

Celesto Cloud

E2B

vCPU, per hour: Celesto Cloud: $0.015; E2B: $0.0504
RAM, per GiB-hour: Celesto Cloud: Included; E2B: $0.0162
Free tier: Celesto Cloud: $5 runtime credit, one time, 30 days; E2B: $100 credit, one time
Paid plan from: Celesto Cloud: Pay as you go; E2B: $150 / month
Billing: Celesto Cloud: Bundled machine time; E2B: Per second
Largest sandbox: Celesto Cloud: 8 vCPU · 32 GiB; E2B: 8 vCPU · 8 GiB
Concurrent sandboxes: Celesto Cloud: Up to 10; E2B: Up to 1,100
Isolation: Celesto Cloud: MicroVM; E2B: Firecracker microVM
Integrations: Celesto Cloud: MCP, OpenAI Agents SDK; E2B: LangChain, OpenAI Agents SDK, Vercel AI SDK, MCP

Full comparison

18 fields, at each provider's list price

Celesto Cloudcelesto.ai/pricing

E2Be2b.dev/pricing

Pricing

vCPU, per hour: Celesto Cloud: $0.015; E2B: $0.0504
RAM, per GiB-hour: Celesto Cloud: Included; E2B: $0.0162
Storage: Celesto Cloud: Free; E2B: Free
Free tier: Celesto Cloud: $5 runtime credit, one time, 30 days; E2B: $100 credit, one time
Paid plan from: Celesto Cloud: Pay as you go; E2B: $150 / month
Billing: Celesto Cloud: Bundled machine time; E2B: Per second

Limits

Max session: Celesto Cloud: Not listed; E2B: 24 hours
Idle stop: Celesto Cloud: Not listed; E2B: Not listed
Largest sandbox: Celesto Cloud: 8 vCPU · 32 GiB; E2B: 8 vCPU · 8 GiB
Concurrent sandboxes: Celesto Cloud: Up to 10; E2B: Up to 1,100

Platform

Isolation: Celesto Cloud: MicroVM; E2B: Firecracker microVM
GPU: Celesto Cloud: Not listed; E2B: No
Snapshots: Celesto Cloud:; E2B:
Pause and resume: Celesto Cloud:; E2B:

Developer

SDKs: Celesto Cloud: Python, JavaScript / TypeScript; E2B: Python, JavaScript / TypeScript
Integrations: Celesto Cloud: MCP, OpenAI Agents SDK; E2B: LangChain, OpenAI Agents SDK, Vercel AI SDK, MCP

Trust

License: Celesto Cloud: Apache-2.0; E2B: Apache-2.0
BYOC: Celesto Cloud: Not listed; E2B: Enterprise plan

Hourly cost

One sandbox running for one hour

Size

Celesto Cloud

E2B

1 vCPU · 2 GiB: Celesto Cloud: $0.015; E2B: $0.083
2 vCPU · 4 GiB: Celesto Cloud: $0.030; E2B: $0.166
4 vCPU · 8 GiB: Celesto Cloud: $0.060; E2B: $0.331

Compute only, at list rates.

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Which one fits

Based on the fields above

Celesto Cloud fits when

You want to pay only for usage, with no plan fee.
You want the lower list price: $0.030 against $0.166 an hour for 2 vCPU and 4 GiB.
You need a sandbox larger than 8 vCPU · 8 GiB.

E2B fits when

You use LangChain or the Vercel AI SDK.
You want the larger free credit: $100 against $5.
You need the sandboxes in your own cloud account.
You need SOC 2 Type II and HIPAA.

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Celesto Cloud

E2B

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Celesto Cloud fits when

E2B fits when

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