Brimble Sandboxes vs Shardflux

Shardflux costs $0.04 per vCPU-hour. Brimble Sandboxes runs gVisor and limits a session to 6 hours. Shardflux runs Firecracker microVMs and offers GPUs.

Updated Oct 23, 2026

Brimble Sandboxes

Sandbox product of the Brimble hosting platform that runs code in gVisor containers.

Isolation: gVisor
Free tier: 7-day Developer plan trial, card required
Max session: 6 hours

Visit site Brimble Sandboxes 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

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

Field

Brimble Sandboxes

Shardflux

Storage: Brimble Sandboxes: Snapshot storage and persistent volumes bill at storage rates; Shardflux: Free
Free tier: Brimble Sandboxes: 7-day Developer plan trial, card required; Shardflux: 30-day Pro trial, no card needed
Paid plan from: Brimble Sandboxes: $3 / month; Shardflux: $9 / month
Billing: Brimble Sandboxes: Per second; Shardflux: Active CPU time only
Largest sandbox: Brimble Sandboxes: 4 vCPU · 8 GiB; Shardflux: 32 vCPU · 64 GiB
Concurrent sandboxes: Brimble Sandboxes: Up to 15; Shardflux: Up to 200
Isolation: Brimble Sandboxes: gVisor; Shardflux: Firecracker microVM
SDKs: Brimble Sandboxes: JavaScript / TypeScript, Python, Go; Shardflux: TypeScript, Python
Integrations: Brimble Sandboxes: MCP, Claude Code; Shardflux: Claude Code, MCP, Claude Agent SDK, OpenAI Agents SDK, Vercel AI SDK, LangChain

Full comparison

18 fields, at each provider's list price

Brimble Sandboxesbrimble.io/pricing

Shardfluxshardflux.dev/#pricingshardflux.dev

Pricing

vCPU, per hour: Brimble Sandboxes: Not listed; Shardflux: $0.04
RAM, per GiB-hour: Brimble Sandboxes: Not listed; Shardflux: $0.015
Storage: Brimble Sandboxes: Snapshot storage and persistent volumes bill at storage rates; Shardflux: Free
Free tier: Brimble Sandboxes: 7-day Developer plan trial, card required; Shardflux: 30-day Pro trial, no card needed
Paid plan from: Brimble Sandboxes: $3 / month; Shardflux: $9 / month
Billing: Brimble Sandboxes: Per second; Shardflux: Active CPU time only

Limits

Max session: Brimble Sandboxes: 6 hours; Shardflux: Not listed
Idle stop: Brimble Sandboxes: Not listed; Shardflux: After 5 minutes
Largest sandbox: Brimble Sandboxes: 4 vCPU · 8 GiB; Shardflux: 32 vCPU · 64 GiB
Concurrent sandboxes: Brimble Sandboxes: Up to 15; Shardflux: Up to 200

Platform

Isolation: Brimble Sandboxes: gVisor; Shardflux: Firecracker microVM
GPU: Brimble Sandboxes: Not listed; Shardflux:
Snapshots: Brimble Sandboxes:; Shardflux:
Pause and resume: Brimble Sandboxes:; Shardflux:

Developer

SDKs: Brimble Sandboxes: JavaScript / TypeScript, Python, Go; Shardflux: TypeScript, Python
Integrations: Brimble Sandboxes: MCP, Claude Code; Shardflux: Claude Code, MCP, Claude Agent SDK, OpenAI Agents SDK, Vercel AI SDK, LangChain

Trust

License: Brimble Sandboxes: Not listed; Shardflux: Not listed
BYOC: Brimble Sandboxes: Not listed; Shardflux: Not listed

Hourly cost

One sandbox running for one hour

Size

Brimble Sandboxes

Shardflux

1 vCPU · 2 GiB: Brimble Sandboxes: Not listed; Shardflux: $0.070
2 vCPU · 4 GiB: Brimble Sandboxes: Not listed; Shardflux: $0.140
4 vCPU · 8 GiB: Brimble Sandboxes: Not listed; Shardflux: $0.280

Compute only, at list rates.

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Which one fits

Based on the fields above

Shardflux fits when

You need GPUs.
You want each sandbox in its own microVM.
You use the Claude Agent SDK, the OpenAI Agents SDK, the Vercel AI SDK or LangChain.
You need a desktop in the sandbox.

More comparisons

See all comparisons

Brimble Sandboxes

Shardflux

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Shardflux fits when

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