CoreWeave Sandboxes vs Fly.io Sprites
CoreWeave Sandboxes costs $0.128 per vCPU-hour and Fly.io Sprites costs $0.0385 per vCPU-hour. CoreWeave Sandboxes runs microVMs, offers GPUs and limits a session to 720 hours. Fly.io Sprites runs microVMs.
Updated
CoreWeave Sandboxes
- Isolation
- MicroVM
- Free tier
- Not listed
- Max session
- 720 hours
Fly.io Sprites
- Isolation
- MicroVM
- Free tier
- $30 trial credit
- Max session
- Not listed
What is different
5 fields differ. The rest are the same or not listed.
CoreWeave Sandboxes
Fly.io Sprites
- vCPU, per hour
- CoreWeave Sandboxes: $0.128
- Fly.io Sprites: $0.0385
- RAM, per GiB-hour
- CoreWeave Sandboxes: $0.0212
- Fly.io Sprites: $0.021875
- Storage
- CoreWeave Sandboxes: Snapshots and volumes billed separately
- Fly.io Sprites: $0.000683 per GiB-hour
- Billing
- CoreWeave Sandboxes: Per second
- Fly.io Sprites: Active CPU time only
- SDKs
- CoreWeave Sandboxes: Python, TypeScript
- Fly.io Sprites: Python, JavaScript / TypeScript, Go
Full comparison
18 fields, at each provider's list price
CoreWeave Sandboxescoreweave
Fly.io Spritesfly
Pricing
- vCPU, per hour
- CoreWeave Sandboxes: $0.128
- Fly.io Sprites: $0.0385
- RAM, per GiB-hour
- CoreWeave Sandboxes: $0.0212
- Fly.io Sprites: $0.021875
- Storage
- CoreWeave Sandboxes: Snapshots and volumes billed separately
- Fly.io Sprites: $0.000683 per GiB-hour
- Free tier
- CoreWeave Sandboxes: Not listed
- Fly.io Sprites: $30 trial credit
- Paid plan from
- CoreWeave Sandboxes: Not listed
- Fly.io Sprites: Pay as you go
- Billing
- CoreWeave Sandboxes: Per second
- Fly.io Sprites: Active CPU time only
Limits
- Max session
- CoreWeave Sandboxes: 720 hours
- Fly.io Sprites: Not listed
- Idle stop
- CoreWeave Sandboxes: Not listed
- Fly.io Sprites: Not listed
- Largest sandbox
- CoreWeave Sandboxes: Not listed
- Fly.io Sprites: Not listed
- Concurrent sandboxes
- CoreWeave Sandboxes: Up to 5,000
- Fly.io Sprites: Not listed
Platform
- Isolation
- CoreWeave Sandboxes: MicroVM
- Fly.io Sprites: MicroVM
- GPU
- CoreWeave Sandboxes:
- Fly.io Sprites: Not listed
- Snapshots
- CoreWeave Sandboxes:
- Fly.io Sprites:
- Pause and resume
- CoreWeave Sandboxes: Not listed
- Fly.io Sprites:
Developer
- SDKs
- CoreWeave Sandboxes: Python, TypeScript
- Fly.io Sprites: Python, JavaScript / TypeScript, Go
- Integrations
- CoreWeave Sandboxes: Not listed
- Fly.io Sprites: MCP, OpenAI Agents SDK
Trust
- License
- CoreWeave Sandboxes: Not listed
- Fly.io Sprites: Not listed
- BYOC
- CoreWeave Sandboxes: Your CKS clusters. CoreWeave runs the gateway.
- Fly.io Sprites: Not listed
Hourly cost
One sandbox running for one hour
CoreWeave Sandboxes
Fly.io Sprites
- 1 vCPU · 2 GiB
- CoreWeave Sandboxes: $0.170
- Fly.io Sprites: $0.082
- 2 vCPU · 4 GiB
- CoreWeave Sandboxes: $0.341
- Fly.io Sprites: $0.165
- 4 vCPU · 8 GiB
- CoreWeave Sandboxes: $0.682
- Fly.io Sprites: $0.329
Compute only, at list rates.
Open the calculatorWhich one fits
Based on the fields above
CoreWeave Sandboxes fits when
- You need GPUs.
- You need a desktop in the sandbox.
- You need the sandboxes in your own cloud account.
Fly.io Sprites fits when
- You use MCP or the OpenAI Agents SDK.
- You want the lower list price: $0.165 against $0.341 an hour for 2 vCPU and 4 GiB.
- You need pause and resume.
- Your code waits a lot: CPU is billed only while it is in use.
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