vioscale
Comparison

Fly.io vs Railway

No clear leader: Railway (80.1) and Fly.io (79.0) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

Fly.io full profile →Railway full profile →
Machine formatsJSONMarkdownGraphQLor send Accept: application/json
Fly.io79
Railway80
Score
Vioscale score
Fly.io79 / 100medium · 63%updating
Railway80 / 100medium · 60%updating
Pricing
Free tier
Fly.io✓
Railway✓
Model
Fly.iocommercial
Railwayfreemium
Price level
Fly.iounknown
Railwaylow
Transparent
Fly.io✓
Railway✓
Integrations
Count
Fly.io5
Railway8
Security
Disclosure policy
Fly.io–
Railway✓
Gdpr
Fly.io–
Railway✓
Hipaa
Fly.io✓
Railway✓
Iso27001
Fly.io✓
Railway–
Soc2
Fly.io✓
Railway✓
Reliability
Sla pct
Fly.io99.9
Railway99.99
Status page
Fly.io✓
Railway✓
Market
Availability

Capabilities

Feature-by-feature on the axes that matter for paas & hosting. “-” means undocumented, not absent.

Deploy
Git-push auto-deploy
Fly.io-
Railway✓
Deploy arbitrary container image
Fly.io✓
Railway✓
Per-PR preview environments
Fly.io-
Railway✓
Build
Build system
Fly.ioDockerfile
RailwayDockerfile
Runtime / language breadth
Fly.ioDocker containers, Node.js, Deno, and other containerized runtimes
RailwayMulti-language support via Railpack auto-detection and templates
Scale
Autoscaling
Fly.io-
RailwayHorizontal
Deployment
Geographic reach
Fly.ioMulti-region
RailwayMulti-region
Hosting
Fly.ioCloud only
RailwayCloud + self-hosted
Data
Bundled managed data services
Fly.io✓
Railway✓
Delivery
Built-in global CDN / edge
Fly.io-
Railway✗
Custom domains + automatic TLS
Fly.io✓
Railway✓
Ops
Env vars & secrets management
Fly.io-
Railway✓
Instant rollbacks
Fly.io-
Railway✓
Extensibility
CLI + deploy API
Fly.io✓
Railway✓

What each one is

The product in its own terms, so the numbers below have context.

Fly.io

Fly.io Sprites are dedicated virtual machines that provide hardware-isolated Linux environments for AI agents, tools, and evaluations. They feature persistent block storage that survives sleep cycles, automatic checkpointing, and support for executing untrusted code with configurable network policies.

Independently observed

Railway

A cloud infrastructure provider offering automated deployment pipelines, built-in databases, networking, monitoring, and collaboration tools. Developers connect repositories or push containers and Railway automatically handles configuration, builds, and infrastructure management across multiple global regions.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Fly.io

from $29/moUsage-based

Usage-based pricing (pay-as-you-go) with optional prepayment for 40% discount. Serious Support from $29/month. HIPAA compliance at $99/month. Enterprise available via contact.

  • Pay-as-You-GoPay only for what you use
    • Micro VMs
    • Persistent storage
    • Private networking
    • Unlimited users per organization
  • Serious SupportStarting at $29/month
    • Dedicated support team
  • HIPAA Compliance$99/month
    • HIPAA-compliant workloads
    • BAAs
    • SOC2 certification
  • Machine ReservationSave 40% with upfront commitment
    • 40% discount vs pay-as-you-go
  • EnterpriseContact sales
    • Custom resource configurations
    • SLA requirements
    • Emergency support
as of verify ↗

Railway

from $5/moHybridFree tier

From $5/month. Hobby plan starts at $5 base cost. Pro team plan at $20/seat plus usage-based billing. Usage-based charges for compute, storage, and network egress ($0.10/GB).

  • TrialFree
  • Hobby$5/month base plus usage
  • Pro$20/seat/month plus usage
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Fly.io✓
Railway✓
iOS
Fly.io✗
Railway✓
Android
Fly.io✗
Railway✓
Linux
Fly.io✓
Railway✗
CLI
Fly.io✓
Railway✓
Deployment
Cloud / SaaS
Fly.io✓
Railway✓
Self-hosted
Fly.io✗
Railway✓
Hybrid
Fly.io✗
Railway✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Fly.io

5 total
  • Sentry
  • Supabase
  • Upstash
  • LiteFS
  • Tigris
Independently observed

Railway

8 total
  • GitHub
  • Docker
  • Slack
  • Discord
  • PostgreSQL
  • MySQL
  • MongoDB
  • Redis
Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.