Runtime vs Tenki Sandbox
Runtime costs $0.025 per vCPU-hour and Tenki Sandbox costs $0.0504 per vCPU-hour. Runtime runs Firecracker microVMs and has no session limit. Tenki Sandbox runs full VMs.
Updated
Runtime
- Isolation
- Firecracker microVM
- Free tier
- 100 hours of a 1 GB machine in the first 30 days
- Max session
- No limit
Tenki Sandbox
- Isolation
- Full VM
- Free tier
- $100 credit, one time ($50 at sign-up, $50 when you add a payment method)
- Max session
- Not listed
What is different
10 fields differ. The rest are the same or not listed.
Runtime
Tenki Sandbox
- vCPU, per hour
- Runtime: $0.025
- Tenki Sandbox: $0.0504
- RAM, per GiB-hour
- Runtime: $0.0075
- Tenki Sandbox: $0.0162
- Storage
- Runtime: $0.000119 per GiB-hour after 10 free GiB
- Tenki Sandbox: $0.000108 per GiB-hour after 5 free GiB
- Free tier
- Runtime: 100 hours of a 1 GB machine in the first 30 days
- Tenki Sandbox: $100 credit, one time ($50 at sign-up, $50 when you add a payment method)
- Paid plan from
- Runtime: Pay as you go
- Tenki Sandbox: $200 / month
- Billing
- Runtime: Active CPU time only
- Tenki Sandbox: Per second
- Concurrent sandboxes
- Runtime: Up to 200
- Tenki Sandbox: Up to 100
- Isolation
- Runtime: Firecracker microVM
- Tenki Sandbox: Full VM
- SDKs
- Runtime: JavaScript / TypeScript, Python, Go, Ruby, Java
- Tenki Sandbox: Python, TypeScript, Go
- Integrations
- Runtime: OpenAI Agents SDK, Vercel AI SDK, Claude Agent SDK, LangChain, MCP, Claude Code
- Tenki Sandbox: MCP, Claude Code
Full comparison
18 fields, at each provider's list price
Runtimewithruntime
Tenki Sandboxtenki
Pricing
- vCPU, per hour
- Runtime: $0.025
- Tenki Sandbox: $0.0504
- RAM, per GiB-hour
- Runtime: $0.0075
- Tenki Sandbox: $0.0162
- Storage
- Runtime: $0.000119 per GiB-hour after 10 free GiB
- Tenki Sandbox: $0.000108 per GiB-hour after 5 free GiB
- Free tier
- Runtime: 100 hours of a 1 GB machine in the first 30 days
- Tenki Sandbox: $100 credit, one time ($50 at sign-up, $50 when you add a payment method)
- Paid plan from
- Runtime: Pay as you go
- Tenki Sandbox: $200 / month
- Billing
- Runtime: Active CPU time only
- Tenki Sandbox: Per second
Limits
- Max session
- Runtime: No limit
- Tenki Sandbox: Not listed
- Idle stop
- Runtime: After 5 minutes
- Tenki Sandbox: Not listed
- Largest sandbox
- Runtime: 16 vCPU · 64 GiB
- Tenki Sandbox: 16 vCPU · 64 GiB
- Concurrent sandboxes
- Runtime: Up to 200
- Tenki Sandbox: Up to 100
Platform
- Isolation
- Runtime: Firecracker microVM
- Tenki Sandbox: Full VM
- GPU
- Runtime: No
- Tenki Sandbox: Not listed
- Snapshots
- Runtime:
- Tenki Sandbox:
- Pause and resume
- Runtime:
- Tenki Sandbox:
Developer
- SDKs
- Runtime: JavaScript / TypeScript, Python, Go, Ruby, Java
- Tenki Sandbox: Python, TypeScript, Go
- Integrations
- Runtime: OpenAI Agents SDK, Vercel AI SDK, Claude Agent SDK, LangChain, MCP, Claude Code
- Tenki Sandbox: MCP, Claude Code
Trust
- License
- Runtime: Not listed
- Tenki Sandbox: Not listed
- BYOC
- Runtime: Not listed
- Tenki Sandbox: Not listed
Hourly cost
One sandbox running for one hour
Runtime
Tenki Sandbox
- 1 vCPU · 2 GiB
- Runtime: $0.040
- Tenki Sandbox: $0.083
- 2 vCPU · 4 GiB
- Runtime: $0.080
- Tenki Sandbox: $0.166
- 4 vCPU · 8 GiB
- Runtime: $0.160
- Tenki Sandbox: $0.331
Compute only, at list rates.
Open the calculatorWhich one fits
Based on the fields above
Runtime fits when
- You want to pay only for usage, with no plan fee.
- You want each sandbox in its own microVM.
- You use the OpenAI Agents SDK, the Vercel AI SDK, the Claude Agent SDK or LangChain.
- You want the lower list price: $0.080 against $0.166 an hour for 2 vCPU and 4 GiB.
Tenki Sandbox fits when
- You want each sandbox to be a full VM.
- You need SOC 2 Type II.
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