Celesto Cloud vs Sendblue Sandboxes

Celesto Cloud costs $0.015 per vCPU-hour and Sendblue Sandboxes costs $0.165 per vCPU-hour. Celesto Cloud runs microVMs. Sendblue Sandboxes runs containers.

Updated Oct 15, 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

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

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

Field

Celesto Cloud

Sendblue Sandboxes

vCPU, per hour: Celesto Cloud: $0.015; Sendblue Sandboxes: $0.165
Free tier: Celesto Cloud: $5 runtime credit, one time, 30 days; Sendblue Sandboxes: $100 free compute, once per phone number
Largest sandbox: Celesto Cloud: 8 vCPU · 32 GiB; Sendblue Sandboxes: 2 vCPU · 8 GiB
Concurrent sandboxes: Celesto Cloud: Up to 10; Sendblue Sandboxes: Up to 5
Isolation: Celesto Cloud: MicroVM; Sendblue Sandboxes: Container
Pause and resume: Celesto Cloud:; Sendblue Sandboxes: No

Full comparison

18 fields, at each provider's list price

Celesto Cloudcelesto.ai/pricing

Sendblue Sandboxessendblue.com/sandboxessendblue.com

Pricing

vCPU, per hour: Celesto Cloud: $0.015; Sendblue Sandboxes: $0.165
RAM, per GiB-hour: Celesto Cloud: Included; Sendblue Sandboxes: Included
Storage: Celesto Cloud: Free; Sendblue Sandboxes: Not listed
Free tier: Celesto Cloud: $5 runtime credit, one time, 30 days; Sendblue Sandboxes: $100 free compute, once per phone number
Paid plan from: Celesto Cloud: Pay as you go; Sendblue Sandboxes: Not listed
Billing: Celesto Cloud: Bundled machine time; Sendblue Sandboxes: Bundled machine time

Limits

Max session: Celesto Cloud: Not listed; Sendblue Sandboxes: Not listed
Idle stop: Celesto Cloud: Not listed; Sendblue Sandboxes: After 10 minutes
Largest sandbox: Celesto Cloud: 8 vCPU · 32 GiB; Sendblue Sandboxes: 2 vCPU · 8 GiB
Concurrent sandboxes: Celesto Cloud: Up to 10; Sendblue Sandboxes: Up to 5

Platform

Isolation: Celesto Cloud: MicroVM; Sendblue Sandboxes: Container
GPU: Celesto Cloud: Not listed; Sendblue Sandboxes: Not listed
Snapshots: Celesto Cloud:; Sendblue Sandboxes: Not listed
Pause and resume: Celesto Cloud:; Sendblue Sandboxes: No

Developer

SDKs: Celesto Cloud: Python, JavaScript / TypeScript; Sendblue Sandboxes: Not listed
Integrations: Celesto Cloud: MCP, OpenAI Agents SDK, Claude Code; Sendblue Sandboxes: Not listed

Trust

License: Celesto Cloud: Apache-2.0; Sendblue Sandboxes: Not listed
BYOC: Celesto Cloud: Not listed; Sendblue Sandboxes: Not listed

Hourly cost

One sandbox running for one hour

Size

Celesto Cloud

Sendblue Sandboxes

1 vCPU · 2 GiB: Celesto Cloud: $0.015; Sendblue Sandboxes: $0.165
2 vCPU · 4 GiB: Celesto Cloud: $0.030; Sendblue Sandboxes: $0.330
4 vCPU · 8 GiB: Celesto Cloud: $0.060; Sendblue Sandboxes: $0.660

Compute only, at list rates.

Open the calculator

Which one fits

Based on the fields above

Celesto Cloud fits when

You want each sandbox in its own microVM.
You want an open-source platform (Apache-2.0).
You use MCP, the OpenAI Agents SDK or Claude Code.
You want the lower list price: $0.030 against $0.330 an hour for 2 vCPU and 4 GiB.

Sendblue Sandboxes fits when

You want the larger free credit: $100 against $5.

More comparisons

See all comparisons

Celesto Cloud

Sendblue Sandboxes

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Celesto Cloud fits when

Sendblue Sandboxes fits when

More comparisons

Related

Compare

Pricing

Browse