Azure Container Apps Sandboxes vs Fly.io Sprites

Azure Container Apps Sandboxes costs $0.0864 per vCPU-hour and Fly.io Sprites costs $0.0385 per vCPU-hour. Azure Container Apps Sandboxes runs microVMs. Fly.io Sprites runs microVMs.

Updated Oct 14, 2026

Azure Container Apps Sandboxes

Isolated microVM sandboxes that start on demand.

Isolation: MicroVM
Free tier: Not listed
Max session: Not listed

Visit site Azure Container Apps Sandboxes profile

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

What is different

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

Field

Azure Container Apps Sandboxes

Fly.io Sprites

vCPU, per hour: Azure Container Apps Sandboxes: $0.0864; Fly.io Sprites: $0.0385
RAM, per GiB-hour: Azure Container Apps Sandboxes: $0.0108; Fly.io Sprites: $0.021875
Storage: Azure Container Apps Sandboxes: Storage charge coming soon; Fly.io Sprites: $0.000683 per GiB-hour
Billing: Azure Container Apps Sandboxes: Per second; Fly.io Sprites: Active CPU time only
SDKs: Azure Container Apps Sandboxes: Python, TypeScript; Fly.io Sprites: Python, JavaScript / TypeScript, Go

Full comparison

18 fields, at each provider's list price

Azure Container Apps Sandboxessandboxes.azure.com/docs/sandboxes/costsandboxes.azure.com

Fly.io Spritesfly.io/pricing

Pricing

vCPU, per hour: Azure Container Apps Sandboxes: $0.0864; Fly.io Sprites: $0.0385
RAM, per GiB-hour: Azure Container Apps Sandboxes: $0.0108; Fly.io Sprites: $0.021875
Storage: Azure Container Apps Sandboxes: Storage charge coming soon; Fly.io Sprites: $0.000683 per GiB-hour
Free tier: Azure Container Apps Sandboxes: Not listed; Fly.io Sprites: $30 trial credit
Paid plan from: Azure Container Apps Sandboxes: Not listed; Fly.io Sprites: Pay as you go
Billing: Azure Container Apps Sandboxes: Per second; Fly.io Sprites: Active CPU time only

Limits

Max session: Azure Container Apps Sandboxes: Not listed; Fly.io Sprites: Not listed
Idle stop: Azure Container Apps Sandboxes: Not listed; Fly.io Sprites: Not listed
Largest sandbox: Azure Container Apps Sandboxes: 4 vCPU · 8 GiB; Fly.io Sprites: Not listed
Concurrent sandboxes: Azure Container Apps Sandboxes: Not listed; Fly.io Sprites: Not listed

Platform

Isolation: Azure Container Apps Sandboxes: MicroVM; Fly.io Sprites: MicroVM
GPU: Azure Container Apps Sandboxes: Not listed; Fly.io Sprites: Not listed
Snapshots: Azure Container Apps Sandboxes:; Fly.io Sprites:
Pause and resume: Azure Container Apps Sandboxes:; Fly.io Sprites:

Developer

SDKs: Azure Container Apps Sandboxes: Python, TypeScript; Fly.io Sprites: Python, JavaScript / TypeScript, Go
Integrations: Azure Container Apps Sandboxes: Not listed; Fly.io Sprites: MCP, OpenAI Agents SDK, Claude Code

Trust

License: Azure Container Apps Sandboxes: Not listed; Fly.io Sprites: Not listed
BYOC: Azure Container Apps Sandboxes: Not listed; Fly.io Sprites: Not listed

Hourly cost

One sandbox running for one hour

Size

Azure Container Apps Sandboxes

Fly.io Sprites

1 vCPU · 2 GiB: Azure Container Apps Sandboxes: $0.108; Fly.io Sprites: $0.082
2 vCPU · 4 GiB: Azure Container Apps Sandboxes: $0.216; Fly.io Sprites: $0.165
4 vCPU · 8 GiB: Azure Container Apps Sandboxes: $0.432; 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 use MCP, the OpenAI Agents SDK or Claude Code.
You want the lower list price: $0.165 against $0.216 an hour for 2 vCPU and 4 GiB.
Your code waits a lot: CPU is billed only while it is in use.

More comparisons

See all comparisons

Azure Container Apps 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

Related

Compare

Pricing

Browse