Datadog vs Fly.io: Pricing Comparison 2026
Side-by-side pricing comparison of Datadog and Fly.io. See all plans, features, and costs at a glance.
Bottom line: Datadog starts at $15/mo and Fly.io starts at Custom pricing. Compare all 8 pricing tiers side by side.
Last updated: March 16, 2026
Datadog vs Fly.io: Quick Pricing Facts
| Feature | Datadog | Fly.io |
|---|---|---|
| Starting Price | $15/mo | Custom pricing |
| Number of Plans | 5 | 3 |
| Free Tier | Yes | No |
| Pricing Model | usage-based | usage-based |
| Annual Discount | N/A | N/A |
Datadog and Fly.io are both priced at $15/mo, making them equally accessible Dev Tools. Together they offer 8 pricing plans with 19 features compared, so the best choice comes down to which features match your needs.
Datadog stands out with a free plan for getting started.
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 |  Datadog Try it free |  Fly.io Try it free |
|---|---|---|
| Tier 1 | Free $0/monthCheapest Includes
| Enterprise-Ready Custom pricing |
| Tier 2 | Pro $15/monthCheapest $15 / year Includes
| Compliance Made Easy Custom pricing |
| Tier 3 | DevSecOps Pro $22/monthCheapest $22 / year Includes
| Are on the House Custom pricing |
| Tier 4 | Enterprise $23/monthCheapest $23 / year Includes
| — |
| Tier 5 | DevSecOps Enterprise $34/monthCheapest $34 / year Includes
| — |
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What Reviewers Say
Datadog
Datadog offers a free plan, offers 5 tiers vs 3.
Based on pricing data only. Review the full comparison below for your specific needs.
Best value: Datadog
Try Datadog freeWhich Should You Choose?
Choose Datadog if:
- •You need a free plan with Core collection and visualization features, 1-day metric retention—Datadog offers no-cost access with no credit card required
- •You need 5 pricing tiers for flexible team sizing—more options mean less overpaying for features you don't need
- •You want more features built-in—Datadog offers 19 additional features across its plans
Choose Fly.io if:
- •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)
- •Fly.io's 3-tier usage-based structure gives clearer cost visibility for budget planning
Datadog offers a free plan [1], eliminating the cost barrier for evaluation, while Fly.io requires paid subscription from the start. This gives Datadog a significant advantage for teams with budget constraints or extended trial periods. Once you outgrow Datadog's free tier, upgrading to a paid plan at approximately $15/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. Datadog's 5 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, Datadog 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: Datadog vs Fly.io
How many pricing plans does Datadog have vs Fly.io?
Does Datadog or Fly.io offer a free plan?
Can I save money by paying annually for Datadog or Fly.io?
Does Datadog or Fly.io offer custom enterprise pricing?
How do Datadog and Fly.io compare for Dev Tools?
Sources
- Datadog Official Pricing— Vendor pricing page
- Fly.io Official Pricing— Vendor pricing page
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