Fly.io Sprites vs HopX

Fly.io Sprites costs $0.0385 per vCPU-hour and HopX costs $0.0504 per vCPU-hour. Fly.io Sprites runs microVMs. HopX runs Firecracker microVMs and has no session limit.

Updated Oct 14, 2026

Fly.io Sprites

Persistent Linux computers that sleep when idle.

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

Visit site Fly.io Sprites profile

HopX

Firecracker microVM sandboxes for AI agents.

Isolation: Firecracker microVM
Free tier: $200 credit
Max session: No limit

Visit site HopX profile

What is different

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

Field

Fly.io Sprites

HopX

vCPU, per hour: Fly.io Sprites: $0.0385; HopX: $0.0504
RAM, per GiB-hour: Fly.io Sprites: $0.021875; HopX: $0.0162
Storage: Fly.io Sprites: $0.000683 per GiB-hour; HopX: $0.000108 per GiB-hour
Free tier: Fly.io Sprites: $30 trial credit; HopX: $200 credit
Billing: Fly.io Sprites: Active CPU time only; HopX: Per second
Isolation: Fly.io Sprites: MicroVM; HopX: Firecracker microVM
SDKs: Fly.io Sprites: Python, JavaScript / TypeScript, Go; HopX: Python, JavaScript
Integrations: Fly.io Sprites: MCP, OpenAI Agents SDK; HopX: MCP

Full comparison

18 fields, at each provider's list price

Fly.io Spritesfly.io/pricing

HopXhopx.ai/pricing

Pricing

vCPU, per hour: Fly.io Sprites: $0.0385; HopX: $0.0504
RAM, per GiB-hour: Fly.io Sprites: $0.021875; HopX: $0.0162
Storage: Fly.io Sprites: $0.000683 per GiB-hour; HopX: $0.000108 per GiB-hour
Free tier: Fly.io Sprites: $30 trial credit; HopX: $200 credit
Paid plan from: Fly.io Sprites: Pay as you go; HopX: Pay as you go
Billing: Fly.io Sprites: Active CPU time only; HopX: Per second

Limits

Max session: Fly.io Sprites: Not listed; HopX: No limit
Idle stop: Fly.io Sprites: Not listed; HopX: Not listed
Largest sandbox: Fly.io Sprites: Not listed; HopX: Not listed
Concurrent sandboxes: Fly.io Sprites: Not listed; HopX: Not listed

Platform

Isolation: Fly.io Sprites: MicroVM; HopX: Firecracker microVM
GPU: Fly.io Sprites: Not listed; HopX: Not listed
Snapshots: Fly.io Sprites:; HopX: Not listed
Pause and resume: Fly.io Sprites:; HopX:

Developer

SDKs: Fly.io Sprites: Python, JavaScript / TypeScript, Go; HopX: Python, JavaScript
Integrations: Fly.io Sprites: MCP, OpenAI Agents SDK; HopX: MCP

Trust

License: Fly.io Sprites: Not listed; HopX: Not listed
BYOC: Fly.io Sprites: Not listed; HopX: Not listed

Hourly cost

One sandbox running for one hour

Size

Fly.io Sprites

HopX

1 vCPU · 2 GiB: Fly.io Sprites: $0.082; HopX: $0.083
2 vCPU · 4 GiB: Fly.io Sprites: $0.165; HopX: $0.166
4 vCPU · 8 GiB: Fly.io Sprites: $0.329; HopX: $0.331

Compute only, at list rates.

Open the calculator

Which one fits

Based on the fields above

Fly.io Sprites fits when

You use the OpenAI Agents SDK.
You want the lower list price: $0.165 against $0.166 an hour for 2 vCPU and 4 GiB.
You need snapshots.
Your code waits a lot: CPU is billed only while it is in use.

HopX fits when

You want the larger free credit: $200 against $30.
You need a desktop in the sandbox.
You need SOC 2 and ISO 27001.

More comparisons

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Fly.io Sprites

HopX

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Fly.io Sprites fits when

HopX fits when

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