Fly.io vs Windmill: Pricing Comparison 2026
Side-by-side pricing comparison of Fly.io and Windmill. See all plans, features, and costs at a glance.
Bottom line: Fly.io starts at Custom pricing and Windmill starts at $1/mo. Compare all 5 pricing tiers side by side.
Last updated: March 16, 2026
Fly.io vs Windmill: Quick Pricing Facts
| Feature | Fly.io | Windmill |
|---|---|---|
| Starting Price | Custom pricing | $1/mo |
| Number of Plans | 3 | 2 |
| Free Tier | No | Yes |
| Pricing Model | usage-based | open-source |
| Annual Discount | N/A | N/A |
Fly.io and Windmill are both priced at Custom pricing, making them equally accessible Dev Tools. Together they offer 5 pricing plans with 0 features compared, so the best choice comes down to which features match your needs.
Windmill stands out with a free plan for getting started. Fly.io uses usage-based pricing while Windmill uses open-source pricing, which may affect your total cost at scale.
Review the detailed tier-by-tier comparison above to see exactly which features are included at each price point and find the best fit for your Dev Tools needs.
| Pricing Plans |  Fly.io Try it free |  Windmill Try it free |
|---|---|---|
| Tier 1 | Enterprise-Ready Custom pricing | developer $1/monthCheapest |
| Tier 2 | Compliance Made Easy Custom pricing | operator $0/monthCheapest |
| Tier 3 | Are on the House Custom pricing | — |
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What Reviewers Say
Fly.io
Windmill
Windmill offers a free plan.
Based on pricing data only. Review the full comparison below for your specific needs.
Best value: Windmill
Try Windmill freeWhich Should You Choose?
Choose Fly.io if:
- •You need 3 pricing tiers for flexible team sizing—more options mean less overpaying for features you don't need
- •Your team needs custom enterprise pricing—Fly.io offers negotiated terms for large deployments
- •You prioritize Fly.io's user experience and interface over price (both tools are similarly priced)
Choose Windmill if:
- •You need a free plan with core features—Windmill offers no-cost access with no credit card required
- •You prioritize Windmill's user experience and interface over price (both tools are similarly priced)
- •Windmill's 2-tier open-source structure gives clearer cost visibility for budget planning
Windmill offers a free plan [1], eliminating the cost barrier for evaluation, while Fly.io requires paid subscription from the start. This gives Windmill a significant advantage for teams with budget constraints or extended trial periods. Once you outgrow Windmill's free tier, upgrading to a paid plan at approximately $1/mo provides substantial additional functionality. Compare this pricing path against Fly.io's tiering starting at Custom pricing to assess total cost of ownership over 12 months. Windmill's 2 tiers provide flexibility at different budgets, while Fly.io's 3 tiers structure may force you into higher-cost plans than necessary for your use case. If evaluation cost matters to your decision, Windmill is the obvious starting point with zero financial commitment. Use the free tier to validate core functionality before committing to paid plans from either tool.
Frequently Asked Questions: Fly.io vs Windmill
How many pricing plans does Fly.io have vs Windmill?
Does Fly.io or Windmill offer a free plan?
Does Fly.io or Windmill offer custom enterprise pricing?
What pricing models do Fly.io and Windmill use?
How do Fly.io and Windmill compare for Dev Tools?
Sources
- Fly.io Official Pricing— Vendor pricing page
- Windmill Official Pricing— Vendor pricing page
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