Runtime vs Unikraft Cloud

Runtime costs $0.025 per vCPU-hour. Runtime runs Firecracker microVMs and has no session limit. Unikraft Cloud runs Firecracker microVMs and offers GPUs.

Updated Oct 23, 2026

Runtime

Firecracker microVM sandboxes for AI agents, billed on the CPU that code uses.

Isolation: Firecracker microVM
Free tier: 100 hours of a 1 GB machine in the first 30 days
Max session: No limit

Visit site Runtime profile

Unikraft Cloud

MicroVM sandboxes that start in under 10 ms.

Isolation: Firecracker microVM
Free tier: Hobby plan, free forever
Max session: Not listed

Visit site Unikraft Cloud profile

What is different

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

Field

Runtime

Unikraft Cloud

Free tier: Runtime: 100 hours of a 1 GB machine in the first 30 days; Unikraft Cloud: Hobby plan, free forever
Paid plan from: Runtime: Pay as you go; Unikraft Cloud: $39 / month
Concurrent sandboxes: Runtime: Up to 200; Unikraft Cloud: Up to 24
GPU: Runtime: No; Unikraft Cloud:
SDKs: Runtime: JavaScript / TypeScript, Python, Go, Ruby, Java; Unikraft Cloud: Python, JavaScript / TypeScript, Go

Full comparison

18 fields, at each provider's list price

Runtimewithruntime.com/pricingwithruntime.com

Unikraft Cloudunikraft.com/pricingunikraft.com

Pricing

vCPU, per hour: Runtime: $0.025; Unikraft Cloud: Not listed
RAM, per GiB-hour: Runtime: $0.0075; Unikraft Cloud: Not listed
Storage: Runtime: $0.000119 per GiB-hour after 10 free GiB; Unikraft Cloud: Not listed
Free tier: Runtime: 100 hours of a 1 GB machine in the first 30 days; Unikraft Cloud: Hobby plan, free forever
Paid plan from: Runtime: Pay as you go; Unikraft Cloud: $39 / month
Billing: Runtime: Active CPU time only; Unikraft Cloud: Not listed

Limits

Max session: Runtime: No limit; Unikraft Cloud: Not listed
Idle stop: Runtime: After 5 minutes; Unikraft Cloud: Not listed
Largest sandbox: Runtime: 16 vCPU · 64 GiB; Unikraft Cloud: Not listed
Concurrent sandboxes: Runtime: Up to 200; Unikraft Cloud: Up to 24

Platform

Isolation: Runtime: Firecracker microVM; Unikraft Cloud: Firecracker microVM
GPU: Runtime: No; Unikraft Cloud:
Snapshots: Runtime:; Unikraft Cloud:
Pause and resume: Runtime:; Unikraft Cloud:

Developer

SDKs: Runtime: JavaScript / TypeScript, Python, Go, Ruby, Java; Unikraft Cloud: Python, JavaScript / TypeScript, Go
Integrations: Runtime: OpenAI Agents SDK, Vercel AI SDK, Claude Agent SDK, LangChain, MCP, Claude Code; Unikraft Cloud: Not listed

Trust

License: Runtime: Not listed; Unikraft Cloud: Not listed
BYOC: Runtime: Not listed; Unikraft Cloud: Enterprise plan

Hourly cost

One sandbox running for one hour

Size

Runtime

Unikraft Cloud

1 vCPU · 2 GiB: Runtime: $0.040; Unikraft Cloud: Not listed
2 vCPU · 4 GiB: Runtime: $0.080; Unikraft Cloud: Not listed
4 vCPU · 8 GiB: Runtime: $0.160; Unikraft Cloud: Not listed

Compute only, at list rates.

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Which one fits

Based on the fields above

Runtime fits when

You want to pay only for usage, with no plan fee.
You use the OpenAI Agents SDK, the Vercel AI SDK, the Claude Agent SDK, LangChain, MCP or Claude Code.
Your code waits a lot: CPU is billed only while it is in use.

Unikraft Cloud fits when

You need GPUs.
You need the sandboxes in your own cloud account.
You need SOC 2 Type II, HIPAA and GDPR.

More comparisons

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Runtime

Unikraft Cloud

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Runtime fits when

Unikraft Cloud fits when

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