InstaVM vs Sendblue Sandboxes

InstaVM costs $0.0504 per vCPU-hour and Sendblue Sandboxes costs $0.165 per vCPU-hour. InstaVM runs Firecracker microVMs. Sendblue Sandboxes runs containers.

Updated Oct 15, 2026

InstaVM

Hardware-isolated microVMs for AI agent code.

Isolation: Firecracker microVM
Free tier: $50 credit
Max session: Not listed

Visit site InstaVM 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

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

Field

InstaVM

Sendblue Sandboxes

vCPU, per hour: InstaVM: $0.0504; Sendblue Sandboxes: $0.165
RAM, per GiB-hour: InstaVM: $0.0162; Sendblue Sandboxes: Included
Free tier: InstaVM: $50 credit; Sendblue Sandboxes: $100 free compute, once per phone number
Billing: InstaVM: Per second; Sendblue Sandboxes: Bundled machine time
Concurrent sandboxes: InstaVM: Up to 100; Sendblue Sandboxes: Up to 5
Isolation: InstaVM: Firecracker microVM; Sendblue Sandboxes: Container
Pause and resume: InstaVM:; Sendblue Sandboxes: No

Full comparison

18 fields, at each provider's list price

InstaVMinstavm.io/pricing

Sendblue Sandboxessendblue.com/sandboxessendblue.com

Pricing

vCPU, per hour: InstaVM: $0.0504; Sendblue Sandboxes: $0.165
RAM, per GiB-hour: InstaVM: $0.0162; Sendblue Sandboxes: Included
Storage: InstaVM: $0.0002 per GiB-hour after 10 free GiB; Sendblue Sandboxes: Not listed
Free tier: InstaVM: $50 credit; Sendblue Sandboxes: $100 free compute, once per phone number
Paid plan from: InstaVM: $100 / month; Sendblue Sandboxes: Not listed
Billing: InstaVM: Per second; Sendblue Sandboxes: Bundled machine time

Limits

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

Platform

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

Developer

SDKs: InstaVM: Python, TypeScript; Sendblue Sandboxes: Not listed
Integrations: InstaVM: Claude Code; Sendblue Sandboxes: Not listed

Trust

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

Hourly cost

One sandbox running for one hour

Size

InstaVM

Sendblue Sandboxes

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

Compute only, at list rates.

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Which one fits

Based on the fields above

InstaVM fits when

You want each sandbox in its own microVM.
You use Claude Code.
You want the lower list price: $0.166 against $0.330 an hour for 2 vCPU and 4 GiB.
You need snapshots.

Sendblue Sandboxes fits when

You want the larger free credit: $100 against $50.

More comparisons

See all comparisons

InstaVM

Sendblue Sandboxes

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

InstaVM fits when

Sendblue Sandboxes fits when

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