Modal vs Shardflux
Modal costs $0.070956 per vCPU-hour and Shardflux costs $0.04 per vCPU-hour. Modal runs gVisor, offers GPUs and limits a session to 24 hours. Shardflux runs Firecracker microVMs and offers GPUs.
Updated
Shardflux
- Isolation
- Firecracker microVM
- Free tier
- 30-day Pro trial, no card needed
- Max session
- Not listed
What is different
8 fields differ. The rest are the same or not listed.
Modal
Shardflux
- vCPU, per hour
- Modal: $0.070956
- Shardflux: $0.04
- RAM, per GiB-hour
- Modal: $0.024012
- Shardflux: $0.015
- Free tier
- Modal: $30 credit every month
- Shardflux: 30-day Pro trial, no card needed
- Paid plan from
- Modal: Pay as you go
- Shardflux: $9 / month
- Billing
- Modal: Per second
- Shardflux: Active CPU time only
- Isolation
- Modal: gVisor
- Shardflux: Firecracker microVM
- SDKs
- Modal: Python, JavaScript / TypeScript, Go
- Shardflux: TypeScript, Python
- Integrations
- Modal: Claude Agent SDK, Claude Code
- Shardflux: Claude Code, MCP
Full comparison
18 fields, at each provider's list price
Modalmodal
Shardfluxshardflux
Pricing
- vCPU, per hour
- Modal: $0.070956
- Shardflux: $0.04
- RAM, per GiB-hour
- Modal: $0.024012
- Shardflux: $0.015
- Storage
- Modal: Not listed
- Shardflux: Retained storage is a monthly allowance per plan. No hourly storage rate is published.
- Free tier
- Modal: $30 credit every month
- Shardflux: 30-day Pro trial, no card needed
- Paid plan from
- Modal: Pay as you go
- Shardflux: $9 / month
- Billing
- Modal: Per second
- Shardflux: Active CPU time only
Limits
- Max session
- Modal: 24 hours
- Shardflux: Not listed
- Idle stop
- Modal: Not listed
- Shardflux: Not listed
- Largest sandbox
- Modal: Not listed
- Shardflux: 32 vCPU · 64 GiB
- Concurrent sandboxes
- Modal: Not listed
- Shardflux: Up to 200
Platform
- Isolation
- Modal: gVisor
- Shardflux: Firecracker microVM
- GPU
- Modal:
- Shardflux:
- Snapshots
- Modal:
- Shardflux:
- Pause and resume
- Modal: Not listed
- Shardflux:
Developer
- SDKs
- Modal: Python, JavaScript / TypeScript, Go
- Shardflux: TypeScript, Python
- Integrations
- Modal: Claude Agent SDK, Claude Code
- Shardflux: Claude Code, MCP
Trust
- License
- Modal: Not listed
- Shardflux: Not listed
- BYOC
- Modal: Not listed
- Shardflux: Not listed
Hourly cost
One sandbox running for one hour
Modal
Shardflux
- 1 vCPU · 2 GiB
- Modal: $0.119
- Shardflux: $0.070
- 2 vCPU · 4 GiB
- Modal: $0.238
- Shardflux: $0.140
- 4 vCPU · 8 GiB
- Modal: $0.476
- Shardflux: $0.280
Compute only, at list rates.
Open the calculatorWhich one fits
Based on the fields above
Modal fits when
- You want to pay only for usage, with no plan fee.
- You use the Claude Agent SDK.
- You need SOC 2 Type II, HIPAA and GDPR.
Shardflux fits when
- You want each sandbox in its own microVM.
- You use MCP.
- You want the lower list price: $0.140 against $0.238 an hour for 2 vCPU and 4 GiB.
- You need pause and resume.
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