Brimble Sandboxes vs Fly.io Sprites

Fly.io Sprites costs $0.0385 per vCPU-hour. Brimble Sandboxes runs gVisor and limits a session to 6 hours. Fly.io Sprites runs Firecracker microVMs.

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

Fly.io Sprites

Persistent Linux computers that sleep when idle.

Isolation: Firecracker microVM
Free tier: $30 trial credit
Max session: Not listed

Visit site Fly.io Sprites profile

What is different

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

Field

Brimble Sandboxes

Fly.io Sprites

Storage: Brimble Sandboxes: Snapshot storage and persistent volumes bill at storage rates; Fly.io Sprites: $0.000683 per GiB-hour
Free tier: Brimble Sandboxes: 7-day Developer plan trial, card required; Fly.io Sprites: $30 trial credit
Paid plan from: Brimble Sandboxes: $3 / month; Fly.io Sprites: Pay as you go
Billing: Brimble Sandboxes: Per second; Fly.io Sprites: Active CPU time only
Isolation: Brimble Sandboxes: gVisor; Fly.io Sprites: Firecracker microVM
SDKs: Brimble Sandboxes: JavaScript / TypeScript, Python, Go; Fly.io Sprites: Python, JavaScript / TypeScript, Go
Integrations: Brimble Sandboxes: MCP, Claude Code; Fly.io Sprites: MCP, OpenAI Agents SDK, Claude Code

Full comparison

18 fields, at each provider's list price

Brimble Sandboxesbrimble.io/pricing

Fly.io Spritesfly.io/pricing

Pricing

vCPU, per hour: Brimble Sandboxes: Not listed; Fly.io Sprites: $0.0385
RAM, per GiB-hour: Brimble Sandboxes: Not listed; Fly.io Sprites: $0.021875
Storage: Brimble Sandboxes: Snapshot storage and persistent volumes bill at storage rates; Fly.io Sprites: $0.000683 per GiB-hour
Free tier: Brimble Sandboxes: 7-day Developer plan trial, card required; Fly.io Sprites: $30 trial credit
Paid plan from: Brimble Sandboxes: $3 / month; Fly.io Sprites: Pay as you go
Billing: Brimble Sandboxes: Per second; Fly.io Sprites: Active CPU time only

Limits

Max session: Brimble Sandboxes: 6 hours; Fly.io Sprites: Not listed
Idle stop: Brimble Sandboxes: Not listed; Fly.io Sprites: Not listed
Largest sandbox: Brimble Sandboxes: 4 vCPU · 8 GiB; Fly.io Sprites: Not listed
Concurrent sandboxes: Brimble Sandboxes: Up to 15; Fly.io Sprites: Not listed

Platform

Isolation: Brimble Sandboxes: gVisor; Fly.io Sprites: Firecracker microVM
GPU: Brimble Sandboxes: Not listed; Fly.io Sprites: Not listed
Snapshots: Brimble Sandboxes:; Fly.io Sprites:
Pause and resume: Brimble Sandboxes:; Fly.io Sprites:

Developer

SDKs: Brimble Sandboxes: JavaScript / TypeScript, Python, Go; Fly.io Sprites: Python, JavaScript / TypeScript, Go
Integrations: Brimble Sandboxes: MCP, Claude Code; Fly.io Sprites: MCP, OpenAI Agents SDK, Claude Code

Trust

License: Brimble Sandboxes: Not listed; Fly.io Sprites: Not listed
BYOC: Brimble Sandboxes: Not listed; Fly.io Sprites: Not listed

Hourly cost

One sandbox running for one hour

Size

Brimble Sandboxes

Fly.io Sprites

1 vCPU · 2 GiB: Brimble Sandboxes: Not listed; Fly.io Sprites: $0.082
2 vCPU · 4 GiB: Brimble Sandboxes: Not listed; Fly.io Sprites: $0.165
4 vCPU · 8 GiB: Brimble Sandboxes: Not listed; Fly.io Sprites: $0.329

Compute only, at list rates.

Open the calculator

Which one fits

Based on the fields above

Fly.io Sprites fits when

You want to pay only for usage, with no plan fee.
You want each sandbox in its own microVM.
You use the OpenAI Agents SDK.
Your code waits a lot: CPU is billed only while it is in use.

More comparisons

See all comparisons

Brimble Sandboxes

Fly.io Sprites

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Fly.io Sprites fits when

More comparisons

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