Fly.io Sprites vs InstaVM

Fly.io Sprites costs $0.0385 per vCPU-hour and InstaVM costs $0.0504 per vCPU-hour. Fly.io Sprites runs microVMs. InstaVM runs Firecracker microVMs.

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

InstaVM

Hardware-isolated microVMs for AI agent code.

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

Visit site InstaVM profile

What is different

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

Field

Fly.io Sprites

InstaVM

vCPU, per hour: Fly.io Sprites: $0.0385; InstaVM: $0.0504
RAM, per GiB-hour: Fly.io Sprites: $0.021875; InstaVM: $0.0162
Storage: Fly.io Sprites: $0.000683 per GiB-hour; InstaVM: $0.0002 per GiB-hour after 10 free GiB
Free tier: Fly.io Sprites: $30 trial credit; InstaVM: $50 credit
Paid plan from: Fly.io Sprites: Pay as you go; InstaVM: $100 / month
Billing: Fly.io Sprites: Active CPU time only; InstaVM: Per second
Isolation: Fly.io Sprites: MicroVM; InstaVM: Firecracker microVM
SDKs: Fly.io Sprites: Python, JavaScript / TypeScript, Go; InstaVM: Python, TypeScript

Full comparison

18 fields, at each provider's list price

Fly.io Spritesfly.io/pricing

InstaVMinstavm.io/pricing

Pricing

vCPU, per hour: Fly.io Sprites: $0.0385; InstaVM: $0.0504
RAM, per GiB-hour: Fly.io Sprites: $0.021875; InstaVM: $0.0162
Storage: Fly.io Sprites: $0.000683 per GiB-hour; InstaVM: $0.0002 per GiB-hour after 10 free GiB
Free tier: Fly.io Sprites: $30 trial credit; InstaVM: $50 credit
Paid plan from: Fly.io Sprites: Pay as you go; InstaVM: $100 / month
Billing: Fly.io Sprites: Active CPU time only; InstaVM: Per second

Limits

Max session: Fly.io Sprites: Not listed; InstaVM: Not listed
Idle stop: Fly.io Sprites: Not listed; InstaVM: Not listed
Largest sandbox: Fly.io Sprites: Not listed; InstaVM: Not listed
Concurrent sandboxes: Fly.io Sprites: Not listed; InstaVM: Up to 100

Platform

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

Developer

SDKs: Fly.io Sprites: Python, JavaScript / TypeScript, Go; InstaVM: Python, TypeScript
Integrations: Fly.io Sprites: MCP, OpenAI Agents SDK; InstaVM: Not listed

Trust

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

Hourly cost

One sandbox running for one hour

Size

Fly.io Sprites

InstaVM

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

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

InstaVM fits when

You want the larger free credit: $50 against $30.
You need a desktop in the sandbox.
You need SOC 2 Type II.

More comparisons

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Fly.io Sprites

InstaVM

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Fly.io Sprites fits when

InstaVM fits when

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