Mosaic Sandbox vs Shardflux
Mosaic Sandbox costs $0.025 per vCPU-hour and Shardflux costs $0.04 per vCPU-hour. Mosaic Sandbox runs Firecracker microVMs. Shardflux runs Firecracker microVMs and offers GPUs.
Updated
Mosaic Sandbox
- Isolation
- Firecracker microVM
- Free tier
- Not listed
- Max session
- Not listed
Shardflux
- Isolation
- Firecracker microVM
- Free tier
- 30-day Pro trial, no card needed
- Max session
- Not listed
What is different
9 fields differ. The rest are the same or not listed.
Mosaic Sandbox
Shardflux
- vCPU, per hour
- Mosaic Sandbox: $0.025
- Shardflux: $0.04
- RAM, per GiB-hour
- Mosaic Sandbox: Included
- Shardflux: $0.015
- Storage
- Mosaic Sandbox: Free
- Shardflux: Retained storage is a monthly allowance per plan. No hourly storage rate is published.
- Paid plan from
- Mosaic Sandbox: Pay as you go
- Shardflux: $9 / month
- Billing
- Mosaic Sandbox: Bundled machine time
- Shardflux: Active CPU time only
- Largest sandbox
- Mosaic Sandbox: 16 vCPU · 32 GiB
- Shardflux: 32 vCPU · 64 GiB
- GPU
- Mosaic Sandbox: No
- Shardflux:
- SDKs
- Mosaic Sandbox: Python, TypeScript, Go
- Shardflux: TypeScript, Python
- Integrations
- Mosaic Sandbox: LangChain, MCP, Claude Code, Vercel AI SDK
- Shardflux: Claude Code, MCP
Full comparison
18 fields, at each provider's list price
Mosaic Sandboxsandbox
Shardfluxshardflux
Pricing
- vCPU, per hour
- Mosaic Sandbox: $0.025
- Shardflux: $0.04
- RAM, per GiB-hour
- Mosaic Sandbox: Included
- Shardflux: $0.015
- Storage
- Mosaic Sandbox: Free
- Shardflux: Retained storage is a monthly allowance per plan. No hourly storage rate is published.
- Free tier
- Mosaic Sandbox: Not listed
- Shardflux: 30-day Pro trial, no card needed
- Paid plan from
- Mosaic Sandbox: Pay as you go
- Shardflux: $9 / month
- Billing
- Mosaic Sandbox: Bundled machine time
- Shardflux: Active CPU time only
Limits
- Max session
- Mosaic Sandbox: Not listed
- Shardflux: Not listed
- Idle stop
- Mosaic Sandbox: Not listed
- Shardflux: Not listed
- Largest sandbox
- Mosaic Sandbox: 16 vCPU · 32 GiB
- Shardflux: 32 vCPU · 64 GiB
- Concurrent sandboxes
- Mosaic Sandbox: Up to 200
- Shardflux: Up to 200
Platform
- Isolation
- Mosaic Sandbox: Firecracker microVM
- Shardflux: Firecracker microVM
- GPU
- Mosaic Sandbox: No
- Shardflux:
- Snapshots
- Mosaic Sandbox:
- Shardflux:
- Pause and resume
- Mosaic Sandbox:
- Shardflux:
Developer
- SDKs
- Mosaic Sandbox: Python, TypeScript, Go
- Shardflux: TypeScript, Python
- Integrations
- Mosaic Sandbox: LangChain, MCP, Claude Code, Vercel AI SDK
- Shardflux: Claude Code, MCP
Trust
- License
- Mosaic Sandbox: Not listed
- Shardflux: Not listed
- BYOC
- Mosaic Sandbox: Not listed
- Shardflux: Not listed
Hourly cost
One sandbox running for one hour
Mosaic Sandbox
Shardflux
- 1 vCPU · 2 GiB
- Mosaic Sandbox: $0.025
- Shardflux: $0.070
- 2 vCPU · 4 GiB
- Mosaic Sandbox: $0.050
- Shardflux: $0.140
- 4 vCPU · 8 GiB
- Mosaic Sandbox: $0.100
- Shardflux: $0.280
Compute only, at list rates.
Open the calculatorWhich one fits
Based on the fields above
Mosaic Sandbox fits when
- You want to pay only for usage, with no plan fee.
- You use LangChain or the Vercel AI SDK.
- You want the lower list price: $0.050 against $0.140 an hour for 2 vCPU and 4 GiB.
Shardflux fits when
- You need GPUs.
- You need a desktop in the sandbox.
- Your code waits a lot: CPU is billed only while it is in use.
- You need a sandbox larger than 16 vCPU · 32 GiB.
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