Freestyle VMs vs xShellz Agent Shell

Freestyle VMs costs $0.04032 per vCPU-hour. Freestyle VMs runs full VMs and offers GPUs. xShellz Agent Shell runs gVisor and has no session limit.

Updated

Freestyle VMs

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

xShellz Agent Shell

Isolation
gVisor
Free tier
Free plan, 1 box with 0.5 vCPU and 512 MB
Max session
No limit

What is different

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

Freestyle VMs
xShellz Agent Shell
RAM, per GiB-hour
Freestyle VMs: $0.0129
xShellz Agent Shell: Included
Storage
Freestyle VMs: $0.000086 per GiB-hour
xShellz Agent Shell: Free
Free tier
Freestyle VMs: Free plan, $0 forever
xShellz Agent Shell: Free plan, 1 box with 0.5 vCPU and 512 MB
Paid plan from
Freestyle VMs: $50 / month
xShellz Agent Shell: $10 / month
Billing
Freestyle VMs: Per second
xShellz Agent Shell: Bundled machine time
Largest sandbox
Freestyle VMs: 32 vCPU · 64 GiB
xShellz Agent Shell: 4 vCPU · 4 GiB
Concurrent sandboxes
Freestyle VMs: Up to 400
xShellz Agent Shell: Up to 5
Isolation
Freestyle VMs: Full VM
xShellz Agent Shell: gVisor
SDKs
Freestyle VMs: JavaScript
xShellz Agent Shell: Python, JavaScript / TypeScript, Go, Java, Ruby, Rust
Integrations
Freestyle VMs: OpenAI Agents SDK, Claude Agent SDK, Claude Code
xShellz Agent Shell: MCP, Claude Code

Full comparison

18 fields, at each provider's list price

Pricing

vCPU, per hour
Freestyle VMs: $0.04032
xShellz Agent Shell: Not listed
RAM, per GiB-hour
Freestyle VMs: $0.0129
xShellz Agent Shell: Included
Storage
Freestyle VMs: $0.000086 per GiB-hour
xShellz Agent Shell: Free
Free tier
Freestyle VMs: Free plan, $0 forever
xShellz Agent Shell: Free plan, 1 box with 0.5 vCPU and 512 MB
Paid plan from
Freestyle VMs: $50 / month
xShellz Agent Shell: $10 / month
Billing
Freestyle VMs: Per second
xShellz Agent Shell: Bundled machine time

Limits

Max session
Freestyle VMs: Not listed
xShellz Agent Shell: No limit
Idle stop
Freestyle VMs: Not listed
xShellz Agent Shell: Not listed
Largest sandbox
Freestyle VMs: 32 vCPU · 64 GiB
xShellz Agent Shell: 4 vCPU · 4 GiB
Concurrent sandboxes
Freestyle VMs: Up to 400
xShellz Agent Shell: Up to 5

Platform

Isolation
Freestyle VMs: Full VM
xShellz Agent Shell: gVisor
GPU
Freestyle VMs:
xShellz Agent Shell: Not listed
Snapshots
Freestyle VMs:
xShellz Agent Shell: Not listed
Pause and resume
Freestyle VMs:
xShellz Agent Shell:

Developer

SDKs
Freestyle VMs: JavaScript
xShellz Agent Shell: Python, JavaScript / TypeScript, Go, Java, Ruby, Rust
Integrations
Freestyle VMs: OpenAI Agents SDK, Claude Agent SDK, Claude Code
xShellz Agent Shell: MCP, Claude Code

Trust

License
Freestyle VMs: Not listed
xShellz Agent Shell: Not listed
BYOC
Freestyle VMs: Not listed
xShellz Agent Shell: Not listed

Hourly cost

One sandbox running for one hour

Freestyle VMs
xShellz Agent Shell
1 vCPU · 2 GiB
Freestyle VMs: $0.066
xShellz Agent Shell: Not listed
2 vCPU · 4 GiB
Freestyle VMs: $0.132
xShellz Agent Shell: Not listed
4 vCPU · 8 GiB
Freestyle VMs: $0.264
xShellz Agent Shell: Not listed

Compute only, at list rates.

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Which one fits

Based on the fields above

Freestyle VMs fits when

  • You need GPUs.
  • You want each sandbox to be a full VM.
  • You use the OpenAI Agents SDK or the Claude Agent SDK.
  • You need snapshots.

xShellz Agent Shell fits when

  • You use MCP.
  • You need GDPR.

More comparisons

See all comparisons

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