Caged vs Fly.io Sprites
Caged costs $0.06 per vCPU-hour and Fly.io Sprites costs $0.0385 per vCPU-hour. Caged runs Firecracker microVMs and limits a session to 4 hours. Fly.io Sprites runs microVMs.
Updated
Caged
- Isolation
- Firecracker microVM
- Free tier
- Free plan, 5 sandboxes a day
- Max session
- 4 hours
Fly.io Sprites
- Isolation
- MicroVM
- Free tier
- $30 trial credit
- Max session
- Not listed
What is different
8 fields differ. The rest are the same or not listed.
Caged
Fly.io Sprites
- vCPU, per hour
- Caged: $0.06
- Fly.io Sprites: $0.0385
- RAM, per GiB-hour
- Caged: Included
- Fly.io Sprites: $0.021875
- Storage
- Caged: Free
- Fly.io Sprites: $0.000683 per GiB-hour
- Free tier
- Caged: Free plan, 5 sandboxes a day
- Fly.io Sprites: $30 trial credit
- Paid plan from
- Caged: $29 / month
- Fly.io Sprites: Pay as you go
- Billing
- Caged: Bundled machine time
- Fly.io Sprites: Active CPU time only
- Isolation
- Caged: Firecracker microVM
- Fly.io Sprites: MicroVM
- Integrations
- Caged: MCP
- Fly.io Sprites: MCP, OpenAI Agents SDK
Full comparison
18 fields, at each provider's list price
Cagedcaged
Fly.io Spritesfly
Pricing
- vCPU, per hour
- Caged: $0.06
- Fly.io Sprites: $0.0385
- RAM, per GiB-hour
- Caged: Included
- Fly.io Sprites: $0.021875
- Storage
- Caged: Free
- Fly.io Sprites: $0.000683 per GiB-hour
- Free tier
- Caged: Free plan, 5 sandboxes a day
- Fly.io Sprites: $30 trial credit
- Paid plan from
- Caged: $29 / month
- Fly.io Sprites: Pay as you go
- Billing
- Caged: Bundled machine time
- Fly.io Sprites: Active CPU time only
Limits
- Max session
- Caged: 4 hours
- Fly.io Sprites: Not listed
- Idle stop
- Caged: Not listed
- Fly.io Sprites: Not listed
- Largest sandbox
- Caged: 8 vCPU · 8 GiB
- Fly.io Sprites: Not listed
- Concurrent sandboxes
- Caged: Up to 5
- Fly.io Sprites: Not listed
Platform
- Isolation
- Caged: Firecracker microVM
- Fly.io Sprites: MicroVM
- GPU
- Caged: Not listed
- Fly.io Sprites: Not listed
- Snapshots
- Caged: Not listed
- Fly.io Sprites:
- Pause and resume
- Caged: Not listed
- Fly.io Sprites:
Developer
- SDKs
- Caged: Not listed
- Fly.io Sprites: Python, JavaScript / TypeScript, Go
- Integrations
- Caged: MCP
- Fly.io Sprites: MCP, OpenAI Agents SDK
Trust
- License
- Caged: Not listed
- Fly.io Sprites: Not listed
- BYOC
- Caged: Not listed
- Fly.io Sprites: Not listed
Hourly cost
One sandbox running for one hour
Caged
Fly.io Sprites
- 1 vCPU · 2 GiB
- Caged: $0.060
- Fly.io Sprites: $0.082
- 2 vCPU · 4 GiB
- Caged: $0.120
- Fly.io Sprites: $0.165
- 4 vCPU · 8 GiB
- Caged: $0.240
- Fly.io Sprites: $0.329
Compute only, at list rates.
Open the calculatorWhich one fits
Based on the fields above
Caged fits when
- You want the lower list price: $0.120 against $0.165 an hour for 2 vCPU and 4 GiB.
Fly.io Sprites fits when
- You want to pay only for usage, with no plan fee.
- You use the OpenAI Agents SDK.
- You need snapshots.
- You need pause and resume.
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