1
At a glance the headline numbers for RUM impact
Performance impact by rum provider.
10
Providers ranked
After min-sites filter
20,488
Sites in sample
Combined across all items
0.04
Best CLS (p75)
Vercel Analytics
The State of Web Vitals · November 2026 · 213,971 crawled sites · all devices field datacorewebvitals.io/state-of-cwv
2
The ranking sorted by CLS at p75, fastest first
| # | Provider | CLS p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Vercel Analytics | 0.04 | 88.8% | 901 | |
| 2 | Sentry | 0.04 | 87.2% | 12,186 | |
| 3 | Akamai mPulse | 0.08 | 81.0% | 326 | |
| 4 | Cloudflare Web Analytics | 0.08 | 79.7% | 3,490 | |
| 5 | New Relic Browser | 0.09 | 77.0% | 1,110 | |
| 6 | SpeedCurve LUX | 0.10 | 77.6% | 61 | |
| 7 | Netlify Analytics | 0.10 | 76.4% | 1,178 | |
| 8 | Elastic RUM | 0.20 | 60.3% | 84 | |
| 9 | Datadog RUM | 0.38 | 45.0% | 769 | |
| 10 | Dynatrace | 0.46 | 39.4% | 383 |
The State of Web Vitals · November 2026 · 213,971 crawled sites · all devices field datacorewebvitals.io/state-of-cwv
3
Passing CLS per provider which group passes the CLS most often
ProviderSitesPassing CLSp75
Vercel Analytics 0.4% 901 0.04
Sentry 5.7% 12,186 0.04
DebugBear 0% 17 0.08
Akamai mPulse 0.2% 326 0.08
Cloudflare Web Analytics 1.6% 3,490 0.08
SpeedCurve LUX 0% 61 0.10
New Relic Browser 0.5% 1,110 0.09
Netlify Analytics 0.6% 1,178 0.10
AppDynamics 0% 22 0.15
Elastic RUM 0% 84 0.20
Raygun 0% 14 0.29
Datadog RUM 0.4% 769 0.38
Dynatrace 0.2% 383 0.46
Good Needs Improvement Poor Sorted best-passing first · median colored by its own rating · pass = good CLS (0.1 at p75) · one value per site
89% of Vercel Analytics sites pass CLS. Dynatrace trails 50 points behind, leaving 61% of its sites failing. computed
The State of Web Vitals · November 2026 · 213,971 crawled sites · all devices field datacorewebvitals.io/state-of-cwv
4
All five vitals at once the whole category without toggling - cell is the pass rate, small number the p75
LCP
INP
CLS
FCP
TTFB
Sentry 5.7%
872.0s
91124ms
870.04
861.4s
77759ms
Cloudflare Web Analytics 1.6%
812.2s
87145ms
800.08
761.8s
571.2s
Netlify Analytics 0.6%
762.5s
84160ms
760.10
751.8s
551.1s
New Relic Browser 0.5%
782.4s
92136ms
770.09
721.9s
541.2s
Vercel Analytics 0.4%
862.1s
94129ms
890.04
821.6s
79702ms
Datadog RUM 0.4%
444.7s
56279ms
450.38
543.0s
66946ms
Dynatrace 0.2%
692.6s
85181ms
390.46
831.6s
75837ms
Akamai mPulse 0.2%
623.0s
84170ms
810.08
612.1s
471.0s
Elastic RUM 0%
572.9s
83179ms
600.20
721.9s
69909ms
SpeedCurve LUX 0%
931.7s
79188ms
780.10
911.3s
77790ms
AppDynamics 0%
572.9s
90176ms
620.15
672.1s
571.0s
DebugBear 0%
772.3s
75196ms
820.08
652.1s
591.1s
Raygun 0%
712.5s
100145ms
570.29
791.5s
86618ms
60%95%+ passing Cell: pass rate, small number = p75 · faded rows: under 100 sites
One row per provider, one column per vital - the cell is the share of sites passing, the small number the p75. No toggling needed to see where the category actually differs.
Vercel Analytics leads on CLS: 89% of its sites pass. Dynatrace trails at 39%. computed
The State of Web Vitals · November 2026 · 213,971 crawled sites · all devices field datacorewebvitals.io/state-of-cwv
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213,971 crawled sites with Chrome field data, representing millions of real page loads. How we measured.