Fly.io Sprites vs Solari
Fly.io Sprites costs $0.0385 per vCPU-hour and Solari costs $0.0525 per vCPU-hour. Fly.io Sprites runs Firecracker microVMs. Solari runs Cloud Hypervisor microVMs and limits a session to 24 hours.
Updated
Fly.io Sprites
- Isolation
- Firecracker microVM
- Free tier
- $30 trial credit
- Max session
- Not listed
Solari
- Isolation
- Cloud Hypervisor microVM
- Free tier
- $3 credit every month
- Max session
- 24 hours
What is different
9 fields differ. The rest are the same or not listed.
Fly.io Sprites
Solari
- vCPU, per hour
- Fly.io Sprites: $0.0385
- Solari: $0.0525
- RAM, per GiB-hour
- Fly.io Sprites: $0.021875
- Solari: $0.0165
- Storage
- Fly.io Sprites: $0.000683 per GiB-hour
- Solari: Snapshots $0.05 per GB-month, the first 10 GB per organization free, from October 1, 2026.
- Free tier
- Fly.io Sprites: $30 trial credit
- Solari: $3 credit every month
- Paid plan from
- Fly.io Sprites: Pay as you go
- Solari: $20 / month
- Billing
- Fly.io Sprites: Active CPU time only
- Solari: Per second
- Isolation
- Fly.io Sprites: Firecracker microVM
- Solari: Cloud Hypervisor microVM
- SDKs
- Fly.io Sprites: Python, JavaScript / TypeScript, Go
- Solari: TypeScript, Python, Go, Rust
- Integrations
- Fly.io Sprites: MCP, OpenAI Agents SDK, Claude Code
- Solari: MCP, Claude Code
Full comparison
18 fields, at each provider's list price
Fly.io Spritesfly
Solaridocs
Pricing
- vCPU, per hour
- Fly.io Sprites: $0.0385
- Solari: $0.0525
- RAM, per GiB-hour
- Fly.io Sprites: $0.021875
- Solari: $0.0165
- Storage
- Fly.io Sprites: $0.000683 per GiB-hour
- Solari: Snapshots $0.05 per GB-month, the first 10 GB per organization free, from October 1, 2026.
- Free tier
- Fly.io Sprites: $30 trial credit
- Solari: $3 credit every month
- Paid plan from
- Fly.io Sprites: Pay as you go
- Solari: $20 / month
- Billing
- Fly.io Sprites: Active CPU time only
- Solari: Per second
Limits
- Max session
- Fly.io Sprites: Not listed
- Solari: 24 hours
- Idle stop
- Fly.io Sprites: Not listed
- Solari: Not listed
- Largest sandbox
- Fly.io Sprites: Not listed
- Solari: 8 vCPU · 16 GiB
- Concurrent sandboxes
- Fly.io Sprites: Not listed
- Solari: Up to 10
Platform
- Isolation
- Fly.io Sprites: Firecracker microVM
- Solari: Cloud Hypervisor microVM
- GPU
- Fly.io Sprites: Not listed
- Solari: Not listed
- Snapshots
- Fly.io Sprites:
- Solari:
- Pause and resume
- Fly.io Sprites:
- Solari:
Developer
- SDKs
- Fly.io Sprites: Python, JavaScript / TypeScript, Go
- Solari: TypeScript, Python, Go, Rust
- Integrations
- Fly.io Sprites: MCP, OpenAI Agents SDK, Claude Code
- Solari: MCP, Claude Code
Trust
- License
- Fly.io Sprites: Not listed
- Solari: Not listed
- BYOC
- Fly.io Sprites: Not listed
- Solari: Enterprise plan, in your own VPC
Hourly cost
One sandbox running for one hour
Fly.io Sprites
Solari
- 1 vCPU · 2 GiB
- Fly.io Sprites: $0.082
- Solari: $0.086
- 2 vCPU · 4 GiB
- Fly.io Sprites: $0.165
- Solari: $0.171
- 4 vCPU · 8 GiB
- Fly.io Sprites: $0.329
- Solari: $0.342
Compute only, at list rates.
Open the calculatorWhich 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 the OpenAI Agents SDK.
- You want the lower list price: $0.165 against $0.171 an hour for 2 vCPU and 4 GiB.
- You want the larger free credit: $30 against $3.
Solari fits when
- You need a desktop in the sandbox.
- You need the sandboxes in your own cloud account.
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