Auth0 vs Fly.io: Pricing Comparison 2026
Side-by-side pricing comparison of Auth0 and Fly.io. See all plans, features, and costs at a glance.
Bottom line: Auth0 starts at $35/mo and Fly.io starts at Custom pricing. Compare all 7 pricing tiers side by side.
Last updated: August 10, 2026
Auth0 vs Fly.io: Quick Pricing Facts
| Feature | Auth0 | Fly.io |
|---|---|---|
| Starting Price | $35/mo | Custom pricing |
| Number of Plans | 4 | 3 |
| Free Tier | Yes | No |
| Pricing Model | usage-based | usage-based |
| Annual Discount | N/A | N/A |
Auth0 and Fly.io are both priced at $35/mo, making them equally accessible Dev Tools. Together they offer 7 pricing plans with 29 features compared, so the best choice comes down to which features match your needs.
Auth0 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 |  Auth0 Try free |  Fly.io Try free |
|---|---|---|
| Tier 1 | Free $0/monthCheapest Includes
| Enterprise-Ready Custom pricing |
| Tier 2 | Essentials $35/monthCheapest $4 / year Includes
| Compliance Made Easy Custom pricing |
| Tier 3 | Professional $240/monthCheapest $28 / year Includes
| Are on the House Custom pricing |
| Tier 4 | Enterprise Custom pricing Includes
| - |
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What Reviewers Say
Fly.io
Which Should You Choose?
Choose Auth0 if:
- •User authentication - login, registration, MFA, and identity federation - is your need
- •You want a managed auth service without running servers
- •Enterprise SSO and compliance are driving requirements
Choose Fly.io if:
- •You need to deploy containerized apps close to users with minimal latency
- •You want full control over your runtime environment without Kubernetes complexity
- •Global deployment with persistent storage and automatic failover matters
Auth0 is an identity service; Fly.io is an application hosting platform. You might deploy an app on Fly.io that uses Auth0 for authentication - they're complementary. Fly.io starts free (limited) and scales on usage. Auth0 is free to 7,500 MAUs. Teams choosing a hosting provider don't need to choose between these - they need both.
Frequently Asked Questions: Auth0 vs Fly.io
How many pricing plans does Auth0 have vs Fly.io?
Does Auth0 or Fly.io offer a free plan?
Can I save money by paying annually for Auth0 or Fly.io?
Does Auth0 or Fly.io offer custom enterprise pricing?
How do Auth0 and Fly.io compare for Dev Tools?
Sources
- Auth0 Official Pricing- Vendor pricing page
- Fly.io Official Pricing- Vendor pricing page
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