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Shardflux

Serverless VMs for cloud agents that park when idle and keep their state.

Shardflux runs each sandbox in a Firecracker microVM. It costs $0.04 per vCPU-hour and $0.015 per GiB-hour, with CPU billed only while code uses it. It has a 30-day Pro trial, no card needed.

Updated

$0.04
vCPU per hour
$0.015
RAM per GiB-hour
Not listed
Max session
32 vCPU · 64 GiB
Largest sandbox

Shardflux specifications

List prices and limits for Shardflux

vCPU per hour
$0.04
RAM per GiB-hour
$0.015
Storage
Retained storage is a monthly allowance per plan. No hourly storage rate is published.
Billing
Active CPU time only
Free tier
30-day Pro trial, no card needed
Paid plan from
$9 / monthDeveloper plan
Max session
Not listed
Idle stop
Not listed
Sandbox size
Up to 32 vCPU, 64 GiB1 vCPU and 2 GiB on Free, 4 vCPU and 8 GiB on Developer, 8 vCPU and 16 GiB on Pro and Startup. 32 vCPU and 64 GiB on Scale.
Default size
Not listed
Concurrent sandboxes
Up to 200Workspaces working at once. 3 on Free, 10 on Developer and Pro, 50 on Startup, 200 on Scale.
Storage
2 GiB on Free, 50 GiB on Developer to Startup, 100 GiB on Scale
Isolation
Firecracker microVM
GPU
$1.00 per GPU-hour on Startup and Scale
Snapshots
Suspend, fork and snapshot
Pause and resume
Keeps files, processes and memory
Desktop
Computer use desktop in the workspace
Regions
1AWS us-west-2 for workspaces and the API
SDKs
TypeScript, Python
Integrations
Claude Code, MCP

Shardflux plans

Free

$0per month
CPU-hours
15
RAM GiB-hours
As available
Workspaces working at once
3
Largest workspace
1 vCPU, 2 GiB

Developer

$9per month
CPU-hours
100
RAM GiB-hours
800
Workspaces working at once
10
Largest workspace
4 vCPU, 8 GiB

Pro

$29per month
CPU-hours
500
RAM GiB-hours
4,000
Workspaces working at once
10
Largest workspace
8 vCPU, 16 GiB

Startup

$79per month
CPU-hours
1,500
RAM GiB-hours
12,000
Workspaces working at once
50
Largest workspace
8 vCPU, 16 GiB
GPU-hours
25

Scale

$299per month
CPU-hours
6,000
RAM GiB-hours
48,000
Workspaces working at once
200
Largest workspace
32 vCPU, 64 GiB
GPU-hours
100

Enterprise

Custom
Capacity
Higher limits on request

Hourly cost

Shardflux next to other providers

One sandbox with 2 vCPU and 4 GiB of RAM for one hour, at list price.

Agent37 Cloud
x
Hugging Face Sandboxes
x
Lizard Sandboxes
x
boat
x
Koyeb Sandboxes
x
Celesto Cloud
x
Containarium Cloud
x
Shardflux
x

Compute only. Storage and network are not included.

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Recent changes

No changes recorded for Shardflux yet.

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