Modal vs Solari

Modal costs $0.070956 per vCPU-hour and Solari costs $0.0525 per vCPU-hour. Modal runs gVisor, offers GPUs and limits a session to 24 hours. Solari runs Cloud Hypervisor microVMs and limits a session to 24 hours.

Updated

Modal

Isolation
gVisor
Free tier
$30 credit every month
Max session
24 hours

Solari

Isolation
Cloud Hypervisor microVM
Free tier
$3 credit every month
Max session
24 hours

What is different

7 fields differ. The rest are the same or not listed.

Modal
Solari
vCPU, per hour
Modal: $0.070956
Solari: $0.0525
RAM, per GiB-hour
Modal: $0.024012
Solari: $0.0165
Free tier
Modal: $30 credit every month
Solari: $3 credit every month
Paid plan from
Modal: Pay as you go
Solari: $20 / month
Isolation
Modal: gVisor
Solari: Cloud Hypervisor microVM
SDKs
Modal: Python, JavaScript / TypeScript, Go
Solari: TypeScript, Python, Go, Rust
Integrations
Modal: Claude Agent SDK, Claude Code, LangChain
Solari: MCP, Claude Code

Full comparison

18 fields, at each provider's list price

Pricing

vCPU, per hour
Modal: $0.070956
Solari: $0.0525
RAM, per GiB-hour
Modal: $0.024012
Solari: $0.0165
Storage
Modal: Not listed
Solari: Snapshots $0.05 per GB-month, the first 10 GB per organization free, from October 1, 2026.
Free tier
Modal: $30 credit every month
Solari: $3 credit every month
Paid plan from
Modal: Pay as you go
Solari: $20 / month
Billing
Modal: Per second
Solari: Per second

Limits

Max session
Modal: 24 hours
Solari: 24 hours
Idle stop
Modal: Not listed
Solari: Not listed
Largest sandbox
Modal: Not listed
Solari: 8 vCPU · 16 GiB
Concurrent sandboxes
Modal: Not listed
Solari: Up to 10

Platform

Isolation
Modal: gVisor
Solari: Cloud Hypervisor microVM
GPU
Modal:
Solari: Not listed
Snapshots
Modal:
Solari:
Pause and resume
Modal: Not listed
Solari:

Developer

SDKs
Modal: Python, JavaScript / TypeScript, Go
Solari: TypeScript, Python, Go, Rust
Integrations
Modal: Claude Agent SDK, Claude Code, LangChain
Solari: MCP, Claude Code

Trust

License
Modal: Not listed
Solari: Not listed
BYOC
Modal: Not listed
Solari: Enterprise plan, in your own VPC

Hourly cost

One sandbox running for one hour

Modal
Solari
1 vCPU · 2 GiB
Modal: $0.119
Solari: $0.086
2 vCPU · 4 GiB
Modal: $0.238
Solari: $0.171
4 vCPU · 8 GiB
Modal: $0.476
Solari: $0.342

Compute only, at list rates.

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Which one fits

Based on the fields above

Modal fits when

  • You need GPUs.
  • You want to pay only for usage, with no plan fee.
  • You use the Claude Agent SDK or LangChain.
  • You want the larger free credit: $30 against $3.

Solari fits when

  • You want each sandbox in its own microVM.
  • You use MCP.
  • You want the lower list price: $0.171 against $0.238 an hour for 2 vCPU and 4 GiB.
  • You need pause and resume.

More comparisons

See all comparisons

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