Modal vs Tenki Sandbox

Modal costs $0.070956 per vCPU-hour and Tenki Sandbox costs $0.0504 per vCPU-hour. Modal runs gVisor, offers GPUs and limits a session to 24 hours. Tenki Sandbox runs full VMs.

Updated Oct 14, 2026

Modal

Serverless compute with sandboxes and GPUs.

Isolation: gVisor
Free tier: $30 credit every month
Max session: 24 hours

Visit site Modal profile

Tenki Sandbox

Disposable Linux VMs for AI agents, driven by SDK or CLI.

Isolation: Full VM
Free tier: $100 credit, one time
Max session: Not listed

Visit site Tenki Sandbox profile

What is different

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

Field

Modal

Tenki Sandbox

vCPU, per hour: Modal: $0.070956; Tenki Sandbox: $0.0504
RAM, per GiB-hour: Modal: $0.024012; Tenki Sandbox: $0.0162
Free tier: Modal: $30 credit every month; Tenki Sandbox: $100 credit, one time
Paid plan from: Modal: Pay as you go; Tenki Sandbox: $200 / month
Isolation: Modal: gVisor; Tenki Sandbox: Full VM
SDKs: Modal: Python, JavaScript / TypeScript, Go; Tenki Sandbox: Python, TypeScript, Go
Integrations: Modal: Claude Agent SDK; Tenki Sandbox: MCP

Full comparison

18 fields, at each provider's list price

Modalmodal.com/pricing

Tenki Sandboxtenki.cloud/pricingtenki.cloud

Pricing

vCPU, per hour: Modal: $0.070956; Tenki Sandbox: $0.0504
RAM, per GiB-hour: Modal: $0.024012; Tenki Sandbox: $0.0162
Storage: Modal: Not listed; Tenki Sandbox: $0.000108 per GiB-hour after 5 free GiB
Free tier: Modal: $30 credit every month; Tenki Sandbox: $100 credit, one time
Paid plan from: Modal: Pay as you go; Tenki Sandbox: $200 / month
Billing: Modal: Per second; Tenki Sandbox: Per second

Limits

Max session: Modal: 24 hours; Tenki Sandbox: Not listed
Idle stop: Modal: Not listed; Tenki Sandbox: Not listed
Largest sandbox: Modal: Not listed; Tenki Sandbox: 16 vCPU · 64 GiB
Concurrent sandboxes: Modal: Not listed; Tenki Sandbox: Up to 100

Platform

Isolation: Modal: gVisor; Tenki Sandbox: Full VM
GPU: Modal:; Tenki Sandbox: Not listed
Snapshots: Modal:; Tenki Sandbox:
Pause and resume: Modal: Not listed; Tenki Sandbox:

Developer

SDKs: Modal: Python, JavaScript / TypeScript, Go; Tenki Sandbox: Python, TypeScript, Go
Integrations: Modal: Claude Agent SDK; Tenki Sandbox: MCP

Trust

License: Modal: Not listed; Tenki Sandbox: Not listed
BYOC: Modal: Not listed; Tenki Sandbox: Not listed

Hourly cost

One sandbox running for one hour

Size

Modal

Tenki Sandbox

1 vCPU · 2 GiB: Modal: $0.119; Tenki Sandbox: $0.083
2 vCPU · 4 GiB: Modal: $0.238; Tenki Sandbox: $0.166
4 vCPU · 8 GiB: Modal: $0.476; Tenki Sandbox: $0.331

Compute only, at list rates.

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Which one fits

Based on the fields above

Modal fits when

You need GPUs.
You want to pay only for usage, with no plan fee.
You use the Claude Agent SDK.
You need HIPAA and GDPR.

Tenki Sandbox fits when

You want each sandbox to be a full VM.
You use MCP.
You want the lower list price: $0.166 against $0.238 an hour for 2 vCPU and 4 GiB.
You want the larger free credit: $100 against $30.

More comparisons

See all comparisons

Modal

Tenki Sandbox

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Modal fits when

Tenki Sandbox fits when

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