DigitalOcean Harness Runtime vs Solari

DigitalOcean Harness Runtime costs $0.044 per vCPU-hour and Solari costs $0.0525 per vCPU-hour. DigitalOcean Harness Runtime runs Firecracker microVMs. Solari runs Cloud Hypervisor microVMs and limits a session to 24 hours.

Updated Oct 23, 2026

DigitalOcean Harness Runtime

Managed microVM sandboxes for AI agents and their code.

Isolation: Firecracker microVM
Free tier: $5 credit for new DigitalOcean customers
Max session: Not listed

Visit site DigitalOcean Harness Runtime profile

Solari

One API for cloud browsers, headless microVM sandboxes and desktop VMs for AI agents.

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

Visit site Solari profile

What is different

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

Field

DigitalOcean Harness Runtime

Solari

vCPU, per hour: DigitalOcean Harness Runtime: $0.044; Solari: $0.0525
RAM, per GiB-hour: DigitalOcean Harness Runtime: $0.0095; Solari: $0.0165
Storage: DigitalOcean Harness Runtime: Session volumes $0.05 per GiB-month; Solari: Snapshots $0.05 per GB-month, the first 10 GB per organization free, from October 1, 2026.
Free tier: DigitalOcean Harness Runtime: $5 credit for new DigitalOcean customers; Solari: $3 credit every month
Paid plan from: DigitalOcean Harness Runtime: Pay as you go; Solari: $20 / month
Billing: DigitalOcean Harness Runtime: Active CPU time only; Solari: Per second
Largest sandbox: DigitalOcean Harness Runtime: 16 vCPU · 32 GiB; Solari: 8 vCPU · 16 GiB
Concurrent sandboxes: DigitalOcean Harness Runtime: Up to 100; Solari: Up to 10
Isolation: DigitalOcean Harness Runtime: Firecracker microVM; Solari: Cloud Hypervisor microVM
SDKs: DigitalOcean Harness Runtime: Python; Solari: TypeScript, Python, Go, Rust
Integrations: DigitalOcean Harness Runtime: Claude Code, MCP; Solari: MCP, Claude Code

Full comparison

18 fields, at each provider's list price

DigitalOcean Harness Runtimedigitalocean.com/pricing/harness-runtimedigitalocean.com

Solaridocs.getsolari.com/pricingdocs.getsolari.com

Pricing

vCPU, per hour: DigitalOcean Harness Runtime: $0.044; Solari: $0.0525
RAM, per GiB-hour: DigitalOcean Harness Runtime: $0.0095; Solari: $0.0165
Storage: DigitalOcean Harness Runtime: Session volumes $0.05 per GiB-month; Solari: Snapshots $0.05 per GB-month, the first 10 GB per organization free, from October 1, 2026.
Free tier: DigitalOcean Harness Runtime: $5 credit for new DigitalOcean customers; Solari: $3 credit every month
Paid plan from: DigitalOcean Harness Runtime: Pay as you go; Solari: $20 / month
Billing: DigitalOcean Harness Runtime: Active CPU time only; Solari: Per second

Limits

Max session: DigitalOcean Harness Runtime: Not listed; Solari: 24 hours
Idle stop: DigitalOcean Harness Runtime: After 15 minutes; Solari: Not listed
Largest sandbox: DigitalOcean Harness Runtime: 16 vCPU · 32 GiB; Solari: 8 vCPU · 16 GiB
Concurrent sandboxes: DigitalOcean Harness Runtime: Up to 100; Solari: Up to 10

Platform

Isolation: DigitalOcean Harness Runtime: Firecracker microVM; Solari: Cloud Hypervisor microVM
GPU: DigitalOcean Harness Runtime: Not listed; Solari: Not listed
Snapshots: DigitalOcean Harness Runtime:; Solari:
Pause and resume: DigitalOcean Harness Runtime:; Solari:

Developer

SDKs: DigitalOcean Harness Runtime: Python; Solari: TypeScript, Python, Go, Rust
Integrations: DigitalOcean Harness Runtime: Claude Code, MCP; Solari: MCP, Claude Code

Trust

License: DigitalOcean Harness Runtime: Not listed; Solari: Not listed
BYOC: DigitalOcean Harness Runtime: Not listed; Solari: Enterprise plan, in your own VPC

Hourly cost

One sandbox running for one hour

Size

DigitalOcean Harness Runtime

Solari

1 vCPU · 2 GiB: DigitalOcean Harness Runtime: $0.063; Solari: $0.086
2 vCPU · 4 GiB: DigitalOcean Harness Runtime: $0.126; Solari: $0.171
4 vCPU · 8 GiB: DigitalOcean Harness Runtime: $0.252; Solari: $0.342

Compute only, at list rates.

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Which one fits

Based on the fields above

DigitalOcean Harness Runtime fits when

You want to pay only for usage, with no plan fee.
You want the lower list price: $0.126 against $0.171 an hour for 2 vCPU and 4 GiB.
You want the larger free credit: $5 against $3.
Your code waits a lot: CPU is billed only while it is in use.

Solari fits when

You need a desktop in the sandbox.
You need the sandboxes in your own cloud account.

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DigitalOcean Harness Runtime

Solari

What is different

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Pricing

Limits

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Developer

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Hourly cost

Which one fits

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Solari fits when

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