Fly.io vs WP Engine
Head-to-head usage across the sites we track.
Top sites by authority
Fly.io · WP Engine · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
1
27
Open Page Rank 8+
18
438
Open Page Rank 7+
58
1,868
Open Page Rank 6+
121
4,116
Open Page Rank 5+
202
7,897
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Fly.io · WP Engine · share of sites in each country using one or the other
United States
2,015
124,963
United Kingdom
751
19,915
Canada
629
18,591
India
883
15,626
Australia
684
12,064
Mexico
376
5,690
Philippines
350
5,484
Germany
542
4,955
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Fly.io | WP Engine |
|---|---|---|
| LCP | 1.9 s | 1.7 s |
| INP | 75 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 800 ms |
Median site's p75 values from the Chrome UX Report, Sep 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.