Northflank Sandboxes vs Shardflux

Northflank Sandboxes costs $0.01667 per vCPU-hour and Shardflux costs $0.04 per vCPU-hour. Northflank Sandboxes runs microVMs, offers GPUs and has no session limit. Shardflux runs Firecracker microVMs and offers GPUs.

Updated

Northflank Sandboxes

Isolation
MicroVM
Free tier
Not listed
Max session
No limit

Shardflux

Isolation
Firecracker microVM
Free tier
30-day Pro trial, no card needed
Max session
Not listed

What is different

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

Northflank Sandboxes
Shardflux
vCPU, per hour
Northflank Sandboxes: $0.01667
Shardflux: $0.04
RAM, per GiB-hour
Northflank Sandboxes: $0.00833
Shardflux: $0.015
Storage
Northflank Sandboxes: Volumes $0.15 per GB per month, also when paused. Ephemeral storage is included.
Shardflux: Retained storage is a monthly allowance per plan. No hourly storage rate is published.
Paid plan from
Northflank Sandboxes: Pay as you go
Shardflux: $9 / month
Billing
Northflank Sandboxes: Per second
Shardflux: Active CPU time only
Largest sandbox
Northflank Sandboxes: 20 vCPU · 40 GiB
Shardflux: 32 vCPU · 64 GiB
Isolation
Northflank Sandboxes: MicroVM
Shardflux: Firecracker microVM
SDKs
Northflank Sandboxes: Python, JavaScript
Shardflux: TypeScript, Python

Full comparison

18 fields, at each provider's list price

Pricing

vCPU, per hour
Northflank Sandboxes: $0.01667
Shardflux: $0.04
RAM, per GiB-hour
Northflank Sandboxes: $0.00833
Shardflux: $0.015
Storage
Northflank Sandboxes: Volumes $0.15 per GB per month, also when paused. Ephemeral storage is included.
Shardflux: Retained storage is a monthly allowance per plan. No hourly storage rate is published.
Free tier
Northflank Sandboxes: Not listed
Shardflux: 30-day Pro trial, no card needed
Paid plan from
Northflank Sandboxes: Pay as you go
Shardflux: $9 / month
Billing
Northflank Sandboxes: Per second
Shardflux: Active CPU time only

Limits

Max session
Northflank Sandboxes: No limit
Shardflux: Not listed
Idle stop
Northflank Sandboxes: Not listed
Shardflux: Not listed
Largest sandbox
Northflank Sandboxes: 20 vCPU · 40 GiB
Shardflux: 32 vCPU · 64 GiB
Concurrent sandboxes
Northflank Sandboxes: Not listed
Shardflux: Up to 200

Platform

Isolation
Northflank Sandboxes: MicroVM
Shardflux: Firecracker microVM
GPU
Northflank Sandboxes:
Shardflux:
Snapshots
Northflank Sandboxes: Not listed
Shardflux:
Pause and resume
Northflank Sandboxes:
Shardflux:

Developer

SDKs
Northflank Sandboxes: Python, JavaScript
Shardflux: TypeScript, Python
Integrations
Northflank Sandboxes: Not listed
Shardflux: Claude Code, MCP

Trust

License
Northflank Sandboxes: Not listed
Shardflux: Not listed
BYOC
Northflank Sandboxes: Runs in your own cloud or VPC
Shardflux: Not listed

Hourly cost

One sandbox running for one hour

Northflank Sandboxes
Shardflux
1 vCPU · 2 GiB
Northflank Sandboxes: $0.033
Shardflux: $0.070
2 vCPU · 4 GiB
Northflank Sandboxes: $0.067
Shardflux: $0.140
4 vCPU · 8 GiB
Northflank Sandboxes: $0.133
Shardflux: $0.280

Compute only, at list rates.

Open the calculator

Which one fits

Based on the fields above

Northflank Sandboxes fits when

  • You want to pay only for usage, with no plan fee.
  • You want the lower list price: $0.067 against $0.140 an hour for 2 vCPU and 4 GiB.
  • You need the sandboxes in your own cloud account.
  • You need SOC 2 Type II and HIPAA.

Shardflux fits when

  • You use Claude Code or MCP.
  • You need snapshots.
  • You need a desktop in the sandbox.
  • Your code waits a lot: CPU is billed only while it is in use.

More comparisons

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