Azure Container Apps dynamic sessions vs Fly.io Sprites

Fly.io Sprites costs $0.0385 per vCPU-hour. Azure Container Apps dynamic sessions runs full VMs. Fly.io Sprites runs microVMs.

Updated Oct 14, 2026

Azure Container Apps dynamic sessions

Isolated sandbox sessions for running code on Azure.

Isolation: Full VM
Free tier: Not listed
Max session: Not listed

Visit site Azure Container Apps dynamic sessions 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

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

Field

Azure Container Apps dynamic sessions

Fly.io Sprites

Isolation: Azure Container Apps dynamic sessions: Full VM; Fly.io Sprites: MicroVM
Integrations: Azure Container Apps dynamic sessions: LangChain; Fly.io Sprites: MCP, OpenAI Agents SDK

Full comparison

18 fields, at each provider's list price

Azure Container Apps dynamic sessionsazure.microsoft.com/en-us/pricing/details/container-appsazure.microsoft.com

Fly.io Spritesfly.io/pricing

Pricing

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

Limits

Max session: Azure Container Apps dynamic sessions: Not listed; Fly.io Sprites: Not listed
Idle stop: Azure Container Apps dynamic sessions: Not listed; Fly.io Sprites: Not listed
Largest sandbox: Azure Container Apps dynamic sessions: Not listed; Fly.io Sprites: Not listed
Concurrent sandboxes: Azure Container Apps dynamic sessions: Up to 600; Fly.io Sprites: Not listed

Platform

Isolation: Azure Container Apps dynamic sessions: Full VM; Fly.io Sprites: MicroVM
GPU: Azure Container Apps dynamic sessions: Not listed; Fly.io Sprites: Not listed
Snapshots: Azure Container Apps dynamic sessions: Not listed; Fly.io Sprites:
Pause and resume: Azure Container Apps dynamic sessions: Not listed; Fly.io Sprites:

Developer

SDKs: Azure Container Apps dynamic sessions: Not listed; Fly.io Sprites: Python, JavaScript / TypeScript, Go
Integrations: Azure Container Apps dynamic sessions: LangChain; Fly.io Sprites: MCP, OpenAI Agents SDK

Trust

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

Hourly cost

One sandbox running for one hour

Size

Azure Container Apps dynamic sessions

Fly.io Sprites

1 vCPU · 2 GiB: Azure Container Apps dynamic sessions: Not listed; Fly.io Sprites: $0.082
2 vCPU · 4 GiB: Azure Container Apps dynamic sessions: Not listed; Fly.io Sprites: $0.165
4 vCPU · 8 GiB: Azure Container Apps dynamic sessions: Not listed; Fly.io Sprites: $0.329

Compute only, at list rates.

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Which one fits

Based on the fields above

Azure Container Apps dynamic sessions fits when

You want each sandbox to be a full VM.
You use LangChain.

Fly.io Sprites fits when

You want each sandbox in its own microVM.
You use MCP or the OpenAI Agents SDK.
You need snapshots.
You need pause and resume.

More comparisons

See all comparisons

Azure Container Apps dynamic sessions

Fly.io Sprites

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Azure Container Apps dynamic sessions fits when

Fly.io Sprites fits when

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