Celesto Cloud vs Fly.io Sprites

Celesto Cloud costs $0.015 per vCPU-hour and Fly.io Sprites costs $0.0385 per vCPU-hour. Celesto Cloud runs microVMs. Fly.io Sprites runs microVMs.

Updated Oct 14, 2026

Celesto Cloud

Cloud computers for AI agents, each in a microVM.

Isolation: MicroVM
Free tier: $5 runtime credit, one time, 30 days
Max session: Not listed

Visit site Celesto Cloud profile

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

What is different

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

Field

Celesto Cloud

Fly.io Sprites

vCPU, per hour: Celesto Cloud: $0.015; Fly.io Sprites: $0.0385
RAM, per GiB-hour: Celesto Cloud: Included; Fly.io Sprites: $0.021875
Storage: Celesto Cloud: Free; Fly.io Sprites: $0.000683 per GiB-hour
Free tier: Celesto Cloud: $5 runtime credit, one time, 30 days; Fly.io Sprites: $30 trial credit
Billing: Celesto Cloud: Bundled machine time; Fly.io Sprites: Active CPU time only
SDKs: Celesto Cloud: Python, JavaScript / TypeScript; Fly.io Sprites: Python, JavaScript / TypeScript, Go

Full comparison

18 fields, at each provider's list price

Celesto Cloudcelesto.ai/pricing

Fly.io Spritesfly.io/pricing

Pricing

vCPU, per hour: Celesto Cloud: $0.015; Fly.io Sprites: $0.0385
RAM, per GiB-hour: Celesto Cloud: Included; Fly.io Sprites: $0.021875
Storage: Celesto Cloud: Free; Fly.io Sprites: $0.000683 per GiB-hour
Free tier: Celesto Cloud: $5 runtime credit, one time, 30 days; Fly.io Sprites: $30 trial credit
Paid plan from: Celesto Cloud: Pay as you go; Fly.io Sprites: Pay as you go
Billing: Celesto Cloud: Bundled machine time; Fly.io Sprites: Active CPU time only

Limits

Max session: Celesto Cloud: Not listed; Fly.io Sprites: Not listed
Idle stop: Celesto Cloud: Not listed; Fly.io Sprites: Not listed
Largest sandbox: Celesto Cloud: 8 vCPU · 32 GiB; Fly.io Sprites: Not listed
Concurrent sandboxes: Celesto Cloud: Up to 10; Fly.io Sprites: Not listed

Platform

Isolation: Celesto Cloud: MicroVM; Fly.io Sprites: MicroVM
GPU: Celesto Cloud: Not listed; Fly.io Sprites: Not listed
Snapshots: Celesto Cloud:; Fly.io Sprites:
Pause and resume: Celesto Cloud:; Fly.io Sprites:

Developer

SDKs: Celesto Cloud: Python, JavaScript / TypeScript; Fly.io Sprites: Python, JavaScript / TypeScript, Go
Integrations: Celesto Cloud: MCP, OpenAI Agents SDK, Claude Code; Fly.io Sprites: MCP, OpenAI Agents SDK, Claude Code

Trust

License: Celesto Cloud: Apache-2.0; Fly.io Sprites: Not listed
BYOC: Celesto Cloud: Not listed; Fly.io Sprites: Not listed

Hourly cost

One sandbox running for one hour

Size

Celesto Cloud

Fly.io Sprites

1 vCPU · 2 GiB: Celesto Cloud: $0.015; Fly.io Sprites: $0.082
2 vCPU · 4 GiB: Celesto Cloud: $0.030; Fly.io Sprites: $0.165
4 vCPU · 8 GiB: Celesto Cloud: $0.060; Fly.io Sprites: $0.329

Compute only, at list rates.

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Which one fits

Based on the fields above

Celesto Cloud fits when

You want an open-source platform (Apache-2.0).
You want the lower list price: $0.030 against $0.165 an hour for 2 vCPU and 4 GiB.
You need a desktop in the sandbox.

Fly.io Sprites fits when

You want the larger free credit: $30 against $5.
Your code waits a lot: CPU is billed only while it is in use.

More comparisons

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Celesto Cloud

Fly.io Sprites

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Celesto Cloud fits when

Fly.io Sprites fits when

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