Cloudflare Sandbox vs Runtime
Cloudflare Sandbox costs $0.072 per vCPU-hour and Runtime costs $0.025 per vCPU-hour. Cloudflare Sandbox runs Firecracker microVMs. Runtime runs Firecracker microVMs and has no session limit.
Updated
Cloudflare Sandbox
- Isolation
- Firecracker microVM
- Free tier
- None
- Max session
- Not listed
Runtime
- Isolation
- Firecracker microVM
- Free tier
- 100 hours of a 1 GB machine in the first 30 days
- Max session
- No limit
What is different
8 fields differ. The rest are the same or not listed.
Cloudflare Sandbox
Runtime
- vCPU, per hour
- Cloudflare Sandbox: $0.072
- Runtime: $0.025
- RAM, per GiB-hour
- Cloudflare Sandbox: $0.009
- Runtime: $0.0075
- Storage
- Cloudflare Sandbox: $0.000252 per GiB-hour
- Runtime: $0.000119 per GiB-hour after 10 free GiB
- Free tier
- Cloudflare Sandbox: None
- Runtime: 100 hours of a 1 GB machine in the first 30 days
- Paid plan from
- Cloudflare Sandbox: $5 / month
- Runtime: Pay as you go
- Largest sandbox
- Cloudflare Sandbox: 4 vCPU · 12 GiB
- Runtime: 16 vCPU · 64 GiB
- SDKs
- Cloudflare Sandbox: TypeScript
- Runtime: JavaScript / TypeScript, Python, Go, Ruby, Java
- Integrations
- Cloudflare Sandbox: Claude Code, OpenAI Agents SDK
- Runtime: OpenAI Agents SDK, Vercel AI SDK, Claude Agent SDK, LangChain, MCP, Claude Code
Full comparison
18 fields, at each provider's list price
Cloudflare Sandboxdevelopers
Runtimewithruntime
Pricing
- vCPU, per hour
- Cloudflare Sandbox: $0.072
- Runtime: $0.025
- RAM, per GiB-hour
- Cloudflare Sandbox: $0.009
- Runtime: $0.0075
- Storage
- Cloudflare Sandbox: $0.000252 per GiB-hour
- Runtime: $0.000119 per GiB-hour after 10 free GiB
- Free tier
- Cloudflare Sandbox: None
- Runtime: 100 hours of a 1 GB machine in the first 30 days
- Paid plan from
- Cloudflare Sandbox: $5 / month
- Runtime: Pay as you go
- Billing
- Cloudflare Sandbox: Active CPU time only
- Runtime: Active CPU time only
Limits
- Max session
- Cloudflare Sandbox: Not listed
- Runtime: No limit
- Idle stop
- Cloudflare Sandbox: Not listed
- Runtime: After 5 minutes
- Largest sandbox
- Cloudflare Sandbox: 4 vCPU · 12 GiB
- Runtime: 16 vCPU · 64 GiB
- Concurrent sandboxes
- Cloudflare Sandbox: Not listed
- Runtime: Up to 200
Platform
- Isolation
- Cloudflare Sandbox: Firecracker microVM
- Runtime: Firecracker microVM
- GPU
- Cloudflare Sandbox: Not listed
- Runtime: No
- Snapshots
- Cloudflare Sandbox:
- Runtime:
- Pause and resume
- Cloudflare Sandbox: Not listed
- Runtime:
Developer
- SDKs
- Cloudflare Sandbox: TypeScript
- Runtime: JavaScript / TypeScript, Python, Go, Ruby, Java
- Integrations
- Cloudflare Sandbox: Claude Code, OpenAI Agents SDK
- Runtime: OpenAI Agents SDK, Vercel AI SDK, Claude Agent SDK, LangChain, MCP, Claude Code
Trust
- License
- Cloudflare Sandbox: Not listed
- Runtime: Not listed
- BYOC
- Cloudflare Sandbox: Not listed
- Runtime: Not listed
Hourly cost
One sandbox running for one hour
Cloudflare Sandbox
Runtime
- 1 vCPU · 2 GiB
- Cloudflare Sandbox: $0.090
- Runtime: $0.040
- 2 vCPU · 4 GiB
- Cloudflare Sandbox: $0.180
- Runtime: $0.080
- 4 vCPU · 8 GiB
- Cloudflare Sandbox: $0.360
- Runtime: $0.160
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 use the Vercel AI SDK, the Claude Agent SDK, LangChain or MCP.
- You want the lower list price: $0.080 against $0.180 an hour for 2 vCPU and 4 GiB.
- You want to start without paying.
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