Infrastructure & DevOps

Fly.io

Last updated 2026-07-16 · benchmark measured 2026-08-09 — deterministic & reproducible

Fly.io is a cloud platform for deploying apps and running isolated code sandboxes.

Is Fly.io production-ready?

Legit.Show scores Fly.io 70 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on Fly.io (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Accessibility; its weakest is Privacy. Every frame it averages is published with its evidence on the Legit.Show listing.

The 7 Frames

• Performance — 60/100
• Accessibility — 100/100
• Security — 80/100
• Privacy — 0/100
• Reliability — 100/100
• Standards — 87/100
• Discoverability — 65/100

What we measured

• Security headers present: CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy.
• No HSTS.
• Served over HTTPS with a valid certificate.
• Real Lighthouse performance run — 912 ms to first byte.
• Returns a proper 404 for unknown routes.
• 3 of 3 sampled routes reachable.
• No privacy policy found.
• Sets cookies / loads scripts with no consent prompt.

Who built it

Kurt Mackey (@mrkurt) · product account @flydotio

Who it's for

Developers · AI engineers · DevOps teams · Startups · Enterprises

Pricing

Pay-as-you-go usage-based billing; Serious Support starting at $29/month; 40% discount with machine reservations; Compliance option at $99/month

Visit Fly.io → · Alternatives to Fly.io → · How this was measured →