Fly.io Sprites vs Runta

Fly.io Sprites costs $0.0385 per vCPU-hour and Runta costs $0.0504 per vCPU-hour. Fly.io Sprites runs microVMs. Runta runs full VMs.

Updated Oct 14, 2026

Fly.io Sprites

Persistent Linux computers that sleep when idle.

Isolation: MicroVM
Free tier: $30 trial credit
Max session: Not listed

Visit site Fly.io Sprites profile

Runta

Isolated computers where AI agents work and keep state.

Isolation: Full VM
Free tier: $50 free credit
Max session: Not listed

Visit site Runta profile

What is different

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

Field

Fly.io Sprites

Runta

vCPU, per hour: Fly.io Sprites: $0.0385; Runta: $0.0504
RAM, per GiB-hour: Fly.io Sprites: $0.021875; Runta: $0.0162
Storage: Fly.io Sprites: $0.000683 per GiB-hour; Runta: $0.000108 per GiB-hour
Free tier: Fly.io Sprites: $30 trial credit; Runta: $50 free credit
Billing: Fly.io Sprites: Active CPU time only; Runta: Per second
Isolation: Fly.io Sprites: MicroVM; Runta: Full VM
SDKs: Fly.io Sprites: Python, JavaScript / TypeScript, Go; Runta: Python, TypeScript
Integrations: Fly.io Sprites: MCP, OpenAI Agents SDK; Runta: OpenAI Agents SDK

Full comparison

18 fields, at each provider's list price

Fly.io Spritesfly.io/pricing

Runtarunta.com/pricing

Pricing

vCPU, per hour: Fly.io Sprites: $0.0385; Runta: $0.0504
RAM, per GiB-hour: Fly.io Sprites: $0.021875; Runta: $0.0162
Storage: Fly.io Sprites: $0.000683 per GiB-hour; Runta: $0.000108 per GiB-hour
Free tier: Fly.io Sprites: $30 trial credit; Runta: $50 free credit
Paid plan from: Fly.io Sprites: Pay as you go; Runta: Pay as you go
Billing: Fly.io Sprites: Active CPU time only; Runta: Per second

Limits

Max session: Fly.io Sprites: Not listed; Runta: Not listed
Idle stop: Fly.io Sprites: Not listed; Runta: Not listed
Largest sandbox: Fly.io Sprites: Not listed; Runta: Not listed
Concurrent sandboxes: Fly.io Sprites: Not listed; Runta: Not listed

Platform

Isolation: Fly.io Sprites: MicroVM; Runta: Full VM
GPU: Fly.io Sprites: Not listed; Runta: Not listed
Snapshots: Fly.io Sprites:; Runta:
Pause and resume: Fly.io Sprites:; Runta:

Developer

SDKs: Fly.io Sprites: Python, JavaScript / TypeScript, Go; Runta: Python, TypeScript
Integrations: Fly.io Sprites: MCP, OpenAI Agents SDK; Runta: OpenAI Agents SDK

Trust

License: Fly.io Sprites: Not listed; Runta: Not listed
BYOC: Fly.io Sprites: Not listed; Runta: Not listed

Hourly cost

One sandbox running for one hour

Size

Fly.io Sprites

Runta

1 vCPU · 2 GiB: Fly.io Sprites: $0.082; Runta: $0.083
2 vCPU · 4 GiB: Fly.io Sprites: $0.165; Runta: $0.166
4 vCPU · 8 GiB: Fly.io Sprites: $0.329; Runta: $0.331

Compute only, at list rates.

Open the calculator

Which one fits

Based on the fields above

Fly.io Sprites fits when

You want each sandbox in its own microVM.
You use MCP.
You want the lower list price: $0.165 against $0.166 an hour for 2 vCPU and 4 GiB.
Your code waits a lot: CPU is billed only while it is in use.

Runta fits when

You want each sandbox to be a full VM.
You want the larger free credit: $50 against $30.
You need a desktop in the sandbox.

More comparisons

See all comparisons

Fly.io Sprites

Runta

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Fly.io Sprites fits when

Runta fits when

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