Koyeb Sandboxes vs Shardflux

Koyeb Sandboxes costs $0.0144 per vCPU-hour and Shardflux costs $0.04 per vCPU-hour. Koyeb Sandboxes runs microVMs and offers GPUs. Shardflux runs Firecracker microVMs and offers GPUs.

Updated

Koyeb Sandboxes

Isolation
MicroVM
Free tier
Not listed
Max session
Not listed

Shardflux

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

What is different

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

Koyeb Sandboxes
Shardflux
vCPU, per hour
Koyeb Sandboxes: $0.0144
Shardflux: $0.04
RAM, per GiB-hour
Koyeb Sandboxes: Included
Shardflux: $0.015
Billing
Koyeb Sandboxes: Bundled machine time
Shardflux: Active CPU time only
Isolation
Koyeb Sandboxes: MicroVM
Shardflux: Firecracker microVM
SDKs
Koyeb Sandboxes: Python, JavaScript
Shardflux: TypeScript, Python

Full comparison

18 fields, at each provider's list price

Pricing

vCPU, per hour
Koyeb Sandboxes: $0.0144
Shardflux: $0.04
RAM, per GiB-hour
Koyeb Sandboxes: Included
Shardflux: $0.015
Storage
Koyeb Sandboxes: Not listed
Shardflux: Retained storage is a monthly allowance per plan. No hourly storage rate is published.
Free tier
Koyeb Sandboxes: Not listed
Shardflux: 30-day Pro trial, no card needed
Paid plan from
Koyeb Sandboxes: Not listed
Shardflux: $9 / month
Billing
Koyeb Sandboxes: Bundled machine time
Shardflux: Active CPU time only

Limits

Max session
Koyeb Sandboxes: Not listed
Shardflux: Not listed
Idle stop
Koyeb Sandboxes: After 5 minutes
Shardflux: Not listed
Largest sandbox
Koyeb Sandboxes: Not listed
Shardflux: 32 vCPU · 64 GiB
Concurrent sandboxes
Koyeb Sandboxes: Not listed
Shardflux: Up to 200

Platform

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

Developer

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

Trust

License
Koyeb Sandboxes: Not listed
Shardflux: Not listed
BYOC
Koyeb Sandboxes: Not listed
Shardflux: Not listed

Hourly cost

One sandbox running for one hour

Koyeb Sandboxes
Shardflux
1 vCPU · 2 GiB
Koyeb Sandboxes: $0.014
Shardflux: $0.070
2 vCPU · 4 GiB
Koyeb Sandboxes: $0.029
Shardflux: $0.140
4 vCPU · 8 GiB
Koyeb Sandboxes: $0.058
Shardflux: $0.280

Compute only, at list rates.

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Which one fits

Based on the fields above

Koyeb Sandboxes fits when

  • You want the lower list price: $0.029 against $0.140 an hour for 2 vCPU and 4 GiB.

Shardflux fits when

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

More comparisons

See all comparisons

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