InstaVM vs xShellz Agent Shell

InstaVM costs $0.0504 per vCPU-hour. InstaVM runs Firecracker microVMs. xShellz Agent Shell runs gVisor and has no session limit.

Updated Oct 23, 2026

InstaVM

Hardware-isolated microVMs for AI agent code.

Isolation: Firecracker microVM
Free tier: $50 credit
Max session: Not listed

Visit site InstaVM profile

xShellz Agent Shell

Always-on Linux boxes for AI agents, isolated with gVisor.

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

Visit site xShellz Agent Shell profile

What is different

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

Field

InstaVM

xShellz Agent Shell

RAM, per GiB-hour: InstaVM: $0.0162; xShellz Agent Shell: Included
Storage: InstaVM: $0.0002 per GiB-hour after 10 free GiB; xShellz Agent Shell: Free
Free tier: InstaVM: $50 credit; xShellz Agent Shell: Free plan, 1 box with 0.5 vCPU and 512 MB
Paid plan from: InstaVM: $100 / month; xShellz Agent Shell: $10 / month
Billing: InstaVM: Per second; xShellz Agent Shell: Bundled machine time
Concurrent sandboxes: InstaVM: Up to 100; xShellz Agent Shell: Up to 5
Isolation: InstaVM: Firecracker microVM; xShellz Agent Shell: gVisor
SDKs: InstaVM: Python, TypeScript; xShellz Agent Shell: Python, JavaScript / TypeScript, Go, Java, Ruby, Rust
Integrations: InstaVM: Claude Code, OpenAI Agents SDK; xShellz Agent Shell: MCP, Claude Code

Full comparison

18 fields, at each provider's list price

InstaVMinstavm.io/pricing

xShellz Agent Shellxshellz.com/pricingxshellz.com

Pricing

vCPU, per hour: InstaVM: $0.0504; xShellz Agent Shell: Not listed
RAM, per GiB-hour: InstaVM: $0.0162; xShellz Agent Shell: Included
Storage: InstaVM: $0.0002 per GiB-hour after 10 free GiB; xShellz Agent Shell: Free
Free tier: InstaVM: $50 credit; xShellz Agent Shell: Free plan, 1 box with 0.5 vCPU and 512 MB
Paid plan from: InstaVM: $100 / month; xShellz Agent Shell: $10 / month
Billing: InstaVM: Per second; xShellz Agent Shell: Bundled machine time

Limits

Max session: InstaVM: Not listed; xShellz Agent Shell: No limit
Idle stop: InstaVM: Not listed; xShellz Agent Shell: Not listed
Largest sandbox: InstaVM: Not listed; xShellz Agent Shell: 4 vCPU · 4 GiB
Concurrent sandboxes: InstaVM: Up to 100; xShellz Agent Shell: Up to 5

Platform

Isolation: InstaVM: Firecracker microVM; xShellz Agent Shell: gVisor
GPU: InstaVM: Not listed; xShellz Agent Shell: Not listed
Snapshots: InstaVM:; xShellz Agent Shell: Not listed
Pause and resume: InstaVM:; xShellz Agent Shell:

Developer

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

Trust

License: InstaVM: Not listed; xShellz Agent Shell: Not listed
BYOC: InstaVM: Not listed; xShellz Agent Shell: Not listed

Hourly cost

One sandbox running for one hour

Size

InstaVM

xShellz Agent Shell

1 vCPU · 2 GiB: InstaVM: $0.083; xShellz Agent Shell: Not listed
2 vCPU · 4 GiB: InstaVM: $0.166; xShellz Agent Shell: Not listed
4 vCPU · 8 GiB: InstaVM: $0.331; xShellz Agent Shell: Not listed

Compute only, at list rates.

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Which one fits

Based on the fields above

InstaVM fits when

You want each sandbox in its own microVM.
You use the OpenAI Agents SDK.
You need snapshots.
You need a desktop in the sandbox.

xShellz Agent Shell fits when

You use MCP.
You need GDPR.

More comparisons

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InstaVM

xShellz Agent Shell

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

InstaVM fits when

xShellz Agent Shell fits when

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