FlagSmith vs LaunchDarkly
Head-to-head usage across the sites we track.
Top sites by authority
FlagSmith · LaunchDarkly · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
2
0
Open Page Rank 8+
21
7
Open Page Rank 7+
52
20
Open Page Rank 6+
82
30
Open Page Rank 5+
107
51
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
FlagSmith · LaunchDarkly · share of sites in each country using one or the other
United States
590
9,071
United Kingdom
343
133
India
267
186
Canada
244
174
Germany
195
87
France
177
83
Australia
141
93
Mexico
127
106
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | FlagSmith | LaunchDarkly |
|---|---|---|
| LCP | 2.3 s | 2.1 s |
| INP | 125 ms | 250 ms |
| CLS | 0.05 | 0.2 |
| TTFB | 900 ms | 900 ms |
Median site's p75 values from the Chrome UX Report, Jun 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.
Sites that switched
Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.
LaunchDarkly to FlagSmith
| Domain | When |
|---|---|
| futurehyundaiofconcord.com | Mar 2026 |
| fordhawaii.com | Dec 2025 |
| volvocarsbridgewater.com | Sep 2025 |
| volvocarsprinceton.com | Sep 2025 |