Spacelift vs Fly.io
Spacelift and Fly.io are both popular tools in the DevOps & Infrastructure space. Spacelift uses a paid model starting at $40/mo, while Fly.io is freemium from Free. Fly.io offers a free tier, while Spacelift does not. Below we break down features, pricing, strengths, and weaknesses to help you decide which tool fits your workflow best.
Last updated: March 2026
Quick Verdict
Choose Spacelift if you want infrastructure as code management with ai-powered policy enforcement.. Spacelift's biggest strengths include best multi-iac platform supporting all major tools and policy enforcement prevents dangerous infrastructure changes. Choose Fly.io if you prefer deploy apps globally with vms close to your users in seconds.. Key advantages include global deployment as easy as single-region and full vm control without serverless limitations. It also has a free tier to get started.
Infrastructure as code management with AI-powered policy enforcement.
Deploy apps globally with VMs close to your users in seconds.
| Spacelift | Fly.io | |
|---|---|---|
| Pricing | $40/mo | Free |
| Free Tier | No | Yes |
| Pricing Model | Paid | Freemium |
| Rating | ★ 4.2 | ★ 4.2 |
| Categories | DevOps & Infrastructure | DevOps & Infrastructure |
| Key Features | 6 features | 6 features |
| Feature | Spacelift | Fly.io |
|---|---|---|
| Multi-IaC support (Terraform, Pulumi, CloudFormation, Ansible) | ✓ | — |
| Automated drift detection and remediation | ✓ | — |
| Policy-as-code with Open Policy Agent | ✓ | — |
| AI-assisted infrastructure change analysis | ✓ | — |
| Approval workflows and plan previews | ✓ | — |
| Self-hosted and SaaS deployment options | ✓ | — |
| Global VM deployment in 30+ regions | — | ✓ |
| Firecracker microVM technology for fast boot | — | ✓ |
| Built-in Postgres and Redis hosting | — | ✓ |
| Anycast networking for global load balancing | — | ✓ |
| Persistent volumes for stateful apps | — | ✓ |
| Deploy from Dockerfile or buildpacks | — | ✓ |
Spacelift
Pros
- + Best multi-IaC platform supporting all major tools
- + Policy enforcement prevents dangerous infrastructure changes
- + Drift detection catches unauthorized manual changes
- + Strong enterprise features with self-hosted option
Cons
- − Premium pricing aimed at enterprise teams
- − Steeper learning curve than simpler CI/CD tools
- − No free tier for evaluation
Fly.io
Pros
- + Global deployment as easy as single-region
- + Full VM control without serverless limitations
- + Free tier includes enough resources for small apps
- + Great for full-stack apps that need low latency globally
Cons
- − Steeper learning curve than Vercel or Netlify
- − Pricing can be complex with multiple resources
- − Less frontend-optimized than specialized platforms
The Bottom Line
Choose Spacelift if: you want infrastructure as code management with ai-powered policy enforcement.. Keep in mind: premium pricing aimed at enterprise teams.
Choose Fly.io if: you prefer deploy apps globally with vms close to your users in seconds.. It has a free tier to get started, which Spacelift lacks. It's completely free to use. Keep in mind: steeper learning curve than vercel or netlify.
Both tools compete in the DevOps & Infrastructure space. The right choice depends on your specific needs, team size, and budget.
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