Prized Sandboxes vs Shardflux

Prized Sandboxes costs $0.04 per vCPU-hour and Shardflux costs $0.04 per vCPU-hour. Prized Sandboxes runs Firecracker microVMs and limits a session to 24 hours. Shardflux runs Firecracker microVMs and offers GPUs.

Updated

Prized Sandboxes

Isolation
Firecracker microVM
Free tier
$30 credit, one time
Max session
24 hours

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.

Prized Sandboxes
Shardflux
RAM, per GiB-hour
Prized Sandboxes: $0.0125
Shardflux: $0.015
Storage
Prized Sandboxes: $0.0001 per GiB-hour
Shardflux: Retained storage is a monthly allowance per plan. No hourly storage rate is published.
Free tier
Prized Sandboxes: $30 credit, one time
Shardflux: 30-day Pro trial, no card needed
Paid plan from
Prized Sandboxes: Pay as you go
Shardflux: $9 / month
Billing
Prized Sandboxes: Per second
Shardflux: Active CPU time only
Largest sandbox
Prized Sandboxes: 32 vCPU · 128 GiB
Shardflux: 32 vCPU · 64 GiB
Concurrent sandboxes
Prized Sandboxes: Up to 20
Shardflux: Up to 200
GPU
Prized Sandboxes: No
Shardflux:

Full comparison

18 fields, at each provider's list price

Pricing

vCPU, per hour
Prized Sandboxes: $0.04
Shardflux: $0.04
RAM, per GiB-hour
Prized Sandboxes: $0.0125
Shardflux: $0.015
Storage
Prized Sandboxes: $0.0001 per GiB-hour
Shardflux: Retained storage is a monthly allowance per plan. No hourly storage rate is published.
Free tier
Prized Sandboxes: $30 credit, one time
Shardflux: 30-day Pro trial, no card needed
Paid plan from
Prized Sandboxes: Pay as you go
Shardflux: $9 / month
Billing
Prized Sandboxes: Per second
Shardflux: Active CPU time only

Limits

Max session
Prized Sandboxes: 24 hours
Shardflux: Not listed
Idle stop
Prized Sandboxes: Not listed
Shardflux: Not listed
Largest sandbox
Prized Sandboxes: 32 vCPU · 128 GiB
Shardflux: 32 vCPU · 64 GiB
Concurrent sandboxes
Prized Sandboxes: Up to 20
Shardflux: Up to 200

Platform

Isolation
Prized Sandboxes: Firecracker microVM
Shardflux: Firecracker microVM
GPU
Prized Sandboxes: No
Shardflux:
Snapshots
Prized Sandboxes: Not listed
Shardflux:
Pause and resume
Prized Sandboxes:
Shardflux:

Developer

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

Trust

License
Prized Sandboxes: Not listed
Shardflux: Not listed
BYOC
Prized Sandboxes: Not listed
Shardflux: Not listed

Hourly cost

One sandbox running for one hour

Prized Sandboxes
Shardflux
1 vCPU · 2 GiB
Prized Sandboxes: $0.065
Shardflux: $0.070
2 vCPU · 4 GiB
Prized Sandboxes: $0.130
Shardflux: $0.140
4 vCPU · 8 GiB
Prized Sandboxes: $0.260
Shardflux: $0.280

Compute only, at list rates.

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Which one fits

Based on the fields above

Prized Sandboxes fits when

  • You want to pay only for usage, with no plan fee.
  • You want the lower list price: $0.130 against $0.140 an hour for 2 vCPU and 4 GiB.
  • You need a sandbox larger than 32 vCPU · 64 GiB.

Shardflux fits when

  • You need GPUs.
  • You use Claude Code or MCP.
  • You need snapshots.
  • You need a desktop in the sandbox.

More comparisons

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