Sendblue Sandboxes vs Watasu

Sendblue Sandboxes costs $0.165 per vCPU-hour. Sendblue Sandboxes runs containers. Watasu limits a session to 24 hours.

Updated Oct 15, 2026

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

Watasu

Isolated Linux sandboxes for AI agents, hosted in the EU.

Isolation: Not listed
Free tier: Free Basic plan
Max session: 24 hours

Visit site Watasu profile

What is different

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

Field

Sendblue Sandboxes

Watasu

Free tier: Sendblue Sandboxes: $100 free compute, once per phone number; Watasu: Free Basic plan
Billing: Sendblue Sandboxes: Bundled machine time; Watasu: Per second
Largest sandbox: Sendblue Sandboxes: 2 vCPU · 8 GiB; Watasu: 8 vCPU · 8 GiB
Concurrent sandboxes: Sendblue Sandboxes: Up to 5; Watasu: Up to 100
Pause and resume: Sendblue Sandboxes: No; Watasu:

Full comparison

18 fields, at each provider's list price

Sendblue Sandboxessendblue.com/sandboxessendblue.com

Watasuwatasu.io/pricing

Pricing

vCPU, per hour: Sendblue Sandboxes: $0.165; Watasu: Not listed
RAM, per GiB-hour: Sendblue Sandboxes: Included; Watasu: Not listed
Storage: Sendblue Sandboxes: Not listed; Watasu: Retained disks €0.10 per GiB per month while the sandbox is stopped. Checkpoints and templates €0.03 per GiB per month.
Free tier: Sendblue Sandboxes: $100 free compute, once per phone number; Watasu: Free Basic plan
Paid plan from: Sendblue Sandboxes: Not listed; Watasu: Not listed
Billing: Sendblue Sandboxes: Bundled machine time; Watasu: Per second

Limits

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

Platform

Isolation: Sendblue Sandboxes: Container; Watasu: Not listed
GPU: Sendblue Sandboxes: Not listed; Watasu: Not listed
Snapshots: Sendblue Sandboxes: Not listed; Watasu:
Pause and resume: Sendblue Sandboxes: No; Watasu:

Developer

SDKs: Sendblue Sandboxes: Not listed; Watasu: Not listed
Integrations: Sendblue Sandboxes: Not listed; Watasu: Not listed

Trust

License: Sendblue Sandboxes: Not listed; Watasu: Not listed
BYOC: Sendblue Sandboxes: Not listed; Watasu: Not listed

Hourly cost

One sandbox running for one hour

Size

Sendblue Sandboxes

Watasu

1 vCPU · 2 GiB: Sendblue Sandboxes: $0.165; Watasu: Not listed
2 vCPU · 4 GiB: Sendblue Sandboxes: $0.330; Watasu: Not listed
4 vCPU · 8 GiB: Sendblue Sandboxes: $0.660; Watasu: Not listed

Compute only, at list rates.

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Which one fits

Based on the fields above

Watasu fits when

You need snapshots.
You need pause and resume.
You need a sandbox larger than 2 vCPU · 8 GiB.

More comparisons

See all comparisons

Sendblue Sandboxes

Watasu

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Watasu fits when

More comparisons

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