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Fly.io

Fly.io

Run full-stack apps close to your users

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SubscriptionHosting4 impressions

Sandboxes aren't enough. Give your agent a real computer and get back to building.
Hosting

Fly.io provides hardware-isolated Linux VMs (Sprites and Machines) that run close to users for AI agents and full-stack apps.

for
Developers building AI agents, personal assistants, or apps that need low-latency edge compute.
pricing
freemium
works withOpenRouterGitHubSlackany HTTP API

Key features

6 features of Fly.io
  • Sprites — Sleep-aware VMs that checkpoint filesystem and services, allowing instant wake-up and rollback.
  • Machines — Fast-booting, hardware-isolated VMs that scale to tens of thousands of users.
  • Block Device Storage — Object-storage backed block device with automatic checkpointing and unlimited scaling.
  • Connectors — Configure a credential once and share it across all Sprites with granular permissions and auto-rotation.
  • Zero-Management Disk — Disk grows automatically up to 100 GB per Sprite, billed only for used bytes.
  • Global Edge Network — Deploy in 18+ regions with <1 s boot time and 99.9 % SLA.

Use cases

  • Run a personal AI assistant that accesses email and calendar without staying on a laptop.
  • Prototype and iterate AI-generated code in a sandbox that persists state across sessions.
  • Deploy agent-built web services directly from the agent’s Sprite via a unique HTTPS URL.
  • Execute untrusted code in isolated VMs with disposable state per request.

Fly.io pricing

from fly.io ↗
  • Machines shared-cpu-1x$0.0027/hour256 MB RAM · pay-by-second billing
  • Machines performance-2x$0.0861/hour4 GB RAM · higher CPU
  • Sprites compute$0.07 / CPU-hourmetered CPU usage · no per-Sprite fee
  • Support Standard$29/month36-hour first response · architecture support
  • Support Premium$199/month24-hour first response · dedicated Slack channel

Fly.io vs alternatives

all alternatives →
Fly.ioRenderRailwayVercelDigitalOcean
Best forHardware-isolated edge VMs for agentsManaged app deploymentSimple app pipelinesFrontend hostingGeneral cloud VMs
PricingFreemiumSubscriptionSubscriptionSubscriptionSubscription
DevHunt upvotes00000
Launched—————
  • Fly.io vs Render: Render offers managed app hosting but lacks hardware-isolated VMs and per-hour compute billing.
  • Fly.io vs Railway: Railway provides easy app deployment with built-in databases, not edge-focused VMs for agents.
  • Fly.io vs Vercel: Vercel focuses on frontend deployments and serverless functions, not persistent Linux VMs.
  • Fly.io vs DigitalOcean: DigitalOcean offers droplets and managed databases but requires manual VM management.

Fly.io FAQ

How is billing calculated for Sprites?+

Sprites are metered per hour of active CPU and memory usage, plus hot or cold storage rates.

Do I pay when a Sprite is idle?+

No. Sprites sleep when not in use and only incur storage charges while idle.

Can I run untrusted code safely?+

Yes, each request runs in a fresh hardware-isolated VM with no shared state.

What regions are supported?+

Fly.io runs in 18+ regions worldwide, including North America, Europe, Asia-Pacific, Africa and South America.

Is there a free tier to try Fly.io?+

Yes, you can start for free and only pay for compute, memory and storage when resources are used.

Summarized by DevHunt from fly.io · Oct 1, 2026. Details may change; check the official site.

About this listing

DevHunt lists Fly.io because developers expect to find it next to the tools in its category. It did not launch on DevHunt. Work on Fly.io? Message us to claim this listing.