Metrics per run

https://en.wikipedia.org/wiki/ChatGPT

Tested 2025-09-17 18:31:49 using Firefox 142.0.1 (runtime settings).

Side by side

Metric12345MedianMeanstddevrsd
Google Web Vitals
Time to First Byte 605 ms 598 ms 617 ms 562 ms 539 ms598 ms584 ms29 ms4.98 %
First Contentful Paint 1.202 s 1.084 s 1.118 s 1.169 s 1.135 s1.135 s1.142 s41 ms3.57 %
Largest Contentful Paint 2.356 s 2.288 s 2.322 s 2.441 s 2.337 s2.337 s2.349 s51 ms2.18 %
Interaction to Next Paint 112 ms NaN s NaN s NaN s 168 ms140 ms140 ms28 ms20.00 %
Timing metrics
First Paint 1.216 s 1.213 s 1.233 s 1.171 s 1.145 s1.213 s1.196 s33 ms2.72 %
First Contentful Paint 1.202 s 1.084 s 1.118 s 1.169 s 1.135 s1.135 s1.142 s41 ms3.57 %
Largest Contentful Paint 2.356 s 2.288 s 2.322 s 2.441 s 2.337 s2.337 s2.349 s51 ms2.18 %
Load Event End 2.420 s 2.282 s 2.358 s 2.431 s 2.294 s2.358 s2.357 s62 ms2.62 %
Server Response Time 228 ms 209 ms 292 ms 195 ms 195 ms209 ms224 ms36 ms16.17 %
TTFB 605 ms 598 ms 617 ms 562 ms 539 ms598 ms584 ms29 ms4.98 %
Page Load Time 2.420 s 2.281 s 2.358 s 2.430 s 2.294 s2.358 s2.357 s62 ms2.62 %
First Visual Change 1.267 s 1.267 s 1.300 s 1.200 s 1.200 s1.267 s1.247 s40 ms3.21 %
Last Visual Change 3.400 s 3.233 s 3.367 s 3.467 s 3.466 s3.400 s3.387 s86 ms2.54 %
Speed Index 1.411 s 1.396 s 1.445 s 1.364 s 1.355 s1.396 s1.394 s33 ms2.34 %
Visual Readiness 2.133 s 1.966 s 2.067 s 2.267 s 2.266 s2.133 s2.140 s116 ms5.44 %
Visual Complete 95 2.367 s 2.300 s 2.333 s 2.433 s 2.333 s2.333 s2.353 s45 ms1.92 %
Visual Complete 99 2.367 s 2.300 s 2.333 s 2.433 s 2.333 s2.333 s2.353 s45 ms1.92 %
CPU metrics
Browser metrics
CPU benchmark score 52 ms 51 ms 52 ms 52 ms 54 ms52 ms52 ms1 ms1.88 %
Page metrics
DOM elements 8284 8285 8284 8284 82848284828400.00 %
Document height 32150 32150 32150 32150 32150321503215000.00 %
Total Requests 60 60 60 60 60606000.00 %
HTML Requests 1 1 1 1 11100.00 %
JavaScript Requests 8 8 8 8 88800.00 %
CSS Requests 2 2 2 2 22200.00 %
Font Requests 0 0 0 0 00000.00 %
HTTP Errors 0 0 0 0 0000N/A
Total Transfer Size 742.8 KB 742.9 KB 742.8 KB 742.9 KB 742.8 KB742.8 KB742.9 KB45 B0.01 %
HTML Transfer Size 124.0 KB 124.0 KB 124.0 KB 124.0 KB 124.0 KB124.0 KB124.0 KB0 b0.00 %
JavaScript Transfer Size 292.5 KB 292.6 KB 292.5 KB 292.6 KB 292.5 KB292.5 KB292.5 KB45 B0.01 %
CSS Transfer Size 26.7 KB 26.7 KB 26.7 KB 26.7 KB 26.7 KB26.7 KB26.7 KB0 b0.00 %
Font Transfer Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Favicon Transfer Size 1.9 KB 1.9 KB 1.9 KB 1.9 KB 1.9 KB1.9 KB1.9 KB0 b0.00 %
SVG Transfer Size 40.0 KB 40.0 KB 40.0 KB 40.0 KB 40.0 KB40.0 KB40.0 KB0 b0.00 %
Total Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
HTML Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
JavaScript Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
CSS Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Image Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Font Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Favicon Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
SVG Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Third Party metrics
First Party metrics
First Party Requests 60 60 60 60 60606000.00 %
First Party Total Transfer Size 742.8 KB 742.9 KB 742.8 KB 742.9 KB 742.8 KB742.8 KB742.9 KB45 B0.01 %
First Party Total Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %