Sailboxes vs Shardflux
Sailboxes costs $0.015 per vCPU-hour and Shardflux costs $0.04 per vCPU-hour. Sailboxes runs full VMs and has no session limit. Shardflux runs Firecracker microVMs and offers GPUs.
Updated
Sailboxes
- Isolation
- Full VM
- Free tier
- $5 credit every month
- Max session
- No limit
Shardflux
- Isolation
- Firecracker microVM
- Free tier
- 30-day Pro trial, no card needed
- Max session
- Not listed
What is different
11 fields differ. The rest are the same or not listed.
Sailboxes
Shardflux
- vCPU, per hour
- Sailboxes: $0.015
- Shardflux: $0.04
- RAM, per GiB-hour
- Sailboxes: $0.008
- Shardflux: $0.015
- Storage
- Sailboxes: $0.0007 per GiB-hour
- Shardflux: Retained storage is a monthly allowance per plan. No hourly storage rate is published.
- Free tier
- Sailboxes: $5 credit every month
- Shardflux: 30-day Pro trial, no card needed
- Paid plan from
- Sailboxes: Pay as you go
- Shardflux: $9 / month
- Billing
- Sailboxes: Per second
- Shardflux: Active CPU time only
- Largest sandbox
- Sailboxes: 8 vCPU · 256 GiB
- Shardflux: 32 vCPU · 64 GiB
- Concurrent sandboxes
- Sailboxes: Up to 5,000
- Shardflux: Up to 200
- Isolation
- Sailboxes: Full VM
- Shardflux: Firecracker microVM
- SDKs
- Sailboxes: Python, TypeScript, Rust
- Shardflux: TypeScript, Python
- Integrations
- Sailboxes: Claude Code
- Shardflux: Claude Code, MCP
Full comparison
18 fields, at each provider's list price
Sailboxesdocs
Shardfluxshardflux
Pricing
- vCPU, per hour
- Sailboxes: $0.015
- Shardflux: $0.04
- RAM, per GiB-hour
- Sailboxes: $0.008
- Shardflux: $0.015
- Storage
- Sailboxes: $0.0007 per GiB-hour
- Shardflux: Retained storage is a monthly allowance per plan. No hourly storage rate is published.
- Free tier
- Sailboxes: $5 credit every month
- Shardflux: 30-day Pro trial, no card needed
- Paid plan from
- Sailboxes: Pay as you go
- Shardflux: $9 / month
- Billing
- Sailboxes: Per second
- Shardflux: Active CPU time only
Limits
- Max session
- Sailboxes: No limit
- Shardflux: Not listed
- Idle stop
- Sailboxes: Not listed
- Shardflux: Not listed
- Largest sandbox
- Sailboxes: 8 vCPU · 256 GiB
- Shardflux: 32 vCPU · 64 GiB
- Concurrent sandboxes
- Sailboxes: Up to 5,000
- Shardflux: Up to 200
Platform
- Isolation
- Sailboxes: Full VM
- Shardflux: Firecracker microVM
- GPU
- Sailboxes: Not listed
- Shardflux:
- Snapshots
- Sailboxes:
- Shardflux:
- Pause and resume
- Sailboxes:
- Shardflux:
Developer
- SDKs
- Sailboxes: Python, TypeScript, Rust
- Shardflux: TypeScript, Python
- Integrations
- Sailboxes: Claude Code
- Shardflux: Claude Code, MCP
Trust
- License
- Sailboxes: Not listed
- Shardflux: Not listed
- BYOC
- Sailboxes: Not listed
- Shardflux: Not listed
Hourly cost
One sandbox running for one hour
Sailboxes
Shardflux
- 1 vCPU · 2 GiB
- Sailboxes: $0.031
- Shardflux: $0.070
- 2 vCPU · 4 GiB
- Sailboxes: $0.062
- Shardflux: $0.140
- 4 vCPU · 8 GiB
- Sailboxes: $0.124
- Shardflux: $0.280
Compute only, at list rates.
Open the calculatorWhich one fits
Based on the fields above
Sailboxes fits when
- You want to pay only for usage, with no plan fee.
- You want each sandbox to be a full VM.
- You want the lower list price: $0.062 against $0.140 an hour for 2 vCPU and 4 GiB.
- You need SOC 2 and HIPAA.
Shardflux fits when
- You need GPUs.
- You want each sandbox in its own microVM.
- You use MCP.
- You need a desktop in the sandbox.
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