Freestyle VMs vs Shardflux

Freestyle VMs costs $0.04032 per vCPU-hour and Shardflux costs $0.04 per vCPU-hour. Freestyle VMs runs full VMs and offers GPUs. Shardflux runs Firecracker microVMs and offers GPUs.

Updated Oct 15, 2026

Freestyle VMs

Full Linux virtual machines for AI agents.

Isolation: Full VM
Free tier: Free plan, $0 forever
Max session: Not listed

Visit site Freestyle VMs profile

Shardflux

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

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

Visit site Shardflux profile

What is different

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

Field

Freestyle VMs

Shardflux

vCPU, per hour: Freestyle VMs: $0.04032; Shardflux: $0.04
RAM, per GiB-hour: Freestyle VMs: $0.0129; Shardflux: $0.015
Storage: Freestyle VMs: $0.000086 per GiB-hour; Shardflux: Retained storage is a monthly allowance per plan. No hourly storage rate is published.
Free tier: Freestyle VMs: Free plan, $0 forever; Shardflux: 30-day Pro trial, no card needed
Paid plan from: Freestyle VMs: $50 / month; Shardflux: $9 / month
Billing: Freestyle VMs: Per second; Shardflux: Active CPU time only
Concurrent sandboxes: Freestyle VMs: Up to 400; Shardflux: Up to 200
Isolation: Freestyle VMs: Full VM; Shardflux: Firecracker microVM
SDKs: Freestyle VMs: JavaScript; Shardflux: TypeScript, Python
Integrations: Freestyle VMs: OpenAI Agents SDK, Claude Agent SDK, Claude Code; Shardflux: Claude Code, MCP

Full comparison

18 fields, at each provider's list price

Freestyle VMsfreestyle.sh/pricingfreestyle.sh

Shardfluxshardflux.dev/#pricingshardflux.dev

Pricing

vCPU, per hour: Freestyle VMs: $0.04032; Shardflux: $0.04
RAM, per GiB-hour: Freestyle VMs: $0.0129; Shardflux: $0.015
Storage: Freestyle VMs: $0.000086 per GiB-hour; Shardflux: Retained storage is a monthly allowance per plan. No hourly storage rate is published.
Free tier: Freestyle VMs: Free plan, $0 forever; Shardflux: 30-day Pro trial, no card needed
Paid plan from: Freestyle VMs: $50 / month; Shardflux: $9 / month
Billing: Freestyle VMs: Per second; Shardflux: Active CPU time only

Limits

Max session: Freestyle VMs: Not listed; Shardflux: Not listed
Idle stop: Freestyle VMs: Not listed; Shardflux: Not listed
Largest sandbox: Freestyle VMs: 32 vCPU · 64 GiB; Shardflux: 32 vCPU · 64 GiB
Concurrent sandboxes: Freestyle VMs: Up to 400; Shardflux: Up to 200

Platform

Isolation: Freestyle VMs: Full VM; Shardflux: Firecracker microVM
GPU: Freestyle VMs:; Shardflux:
Snapshots: Freestyle VMs:; Shardflux:
Pause and resume: Freestyle VMs:; Shardflux:

Developer

SDKs: Freestyle VMs: JavaScript; Shardflux: TypeScript, Python
Integrations: Freestyle VMs: OpenAI Agents SDK, Claude Agent SDK, Claude Code; Shardflux: Claude Code, MCP

Trust

License: Freestyle VMs: Not listed; Shardflux: Not listed
BYOC: Freestyle VMs: Not listed; Shardflux: Not listed

Hourly cost

One sandbox running for one hour

Size

Freestyle VMs

Shardflux

1 vCPU · 2 GiB: Freestyle VMs: $0.066; Shardflux: $0.070
2 vCPU · 4 GiB: Freestyle VMs: $0.132; Shardflux: $0.140
4 vCPU · 8 GiB: Freestyle VMs: $0.264; Shardflux: $0.280

Compute only, at list rates.

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Which one fits

Based on the fields above

Freestyle VMs fits when

You want each sandbox to be a full VM.
You use the OpenAI Agents SDK or the Claude Agent SDK.
You want the lower list price: $0.132 against $0.140 an hour for 2 vCPU and 4 GiB.

Shardflux fits when

You want each sandbox in its own microVM.
You use MCP.
Your code waits a lot: CPU is billed only while it is in use.

More comparisons

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Freestyle VMs

Shardflux

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Freestyle VMs fits when

Shardflux fits when

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