Metrics per run

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

Tested 2026-04-12 21:37:55 using Firefox 148.0.2 (runtime settings).

Side by side

Metric12345MedianMeanstddevrsd
Google Web Vitals
Time to First Byte 429 ms 425 ms 428 ms 415 ms 428 ms428 ms425 ms5 ms1.22 %
First Contentful Paint 1.001 s 1.007 s 1.003 s 968 ms 1.026 s1.003 s1.001 s19 ms1.87 %
Largest Contentful Paint 1.544 s 1.053 s 1.583 s 1.205 s 1.288 s1.288 s1.335 s202 ms15.13 %
Timing metrics
First Paint 1.000 s 1.007 s 1.003 s 967 ms 1.026 s1.003 s1.001 s19 ms1.91 %
First Contentful Paint 1.001 s 1.007 s 1.003 s 968 ms 1.026 s1.003 s1.001 s19 ms1.87 %
Largest Contentful Paint 1.544 s 1.053 s 1.583 s 1.205 s 1.288 s1.288 s1.335 s202 ms15.13 %
Load Event End 1.548 s 1.984 s 1.535 s 1.990 s 1.616 s1.616 s1.735 s208 ms11.99 %
Server Response Time 107 ms 103 ms 104 ms 111 ms 104 ms104 ms106 ms3 ms2.77 %
TTFB 429 ms 425 ms 428 ms 415 ms 428 ms428 ms425 ms5 ms1.22 %
Page Load Time 1.547 s 1.983 s 1.534 s 1.990 s 1.616 s1.616 s1.734 s208 ms12.00 %
First Visual Change 1.066 s 1.066 s 1.066 s 1.033 s 1.033 s1.066 s1.053 s16 ms1.54 %
Last Visual Change 3.033 s 3.166 s 3.200 s 3.266 s 3.300 s3.200 s3.193 s93 ms2.91 %
Speed Index 1.101 s 1.096 s 1.102 s 1.066 s 1.070 s1.096 s1.087 s16 ms1.44 %
Visual Readiness 1.967 s 2.100 s 2.134 s 2.233 s 2.267 s2.134 s2.140 s106 ms4.96 %
Visual Complete 95 1.066 s 1.066 s 1.066 s 1.033 s 1.033 s1.066 s1.053 s16 ms1.54 %
Visual Complete 99 2.033 s 2.000 s 2.000 s 2.000 s 2.067 s2.000 s2.020 s27 ms1.32 %
CPU metrics
Browser metrics
CPU benchmark score 76 ms 77 ms 79 ms 77 ms 79 ms77 ms78 ms1 ms1.55 %
Page metrics
DOM elements 7945 7945 7945 7945 79457945794500.00 %
Document height 29011 29011 29011 29011 29011290112901100.00 %
Total Requests 57 57 57 57 57575700.00 %
HTML Requests 1 1 1 1 11100.00 %
JavaScript Requests 7 7 7 7 77700.00 %
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 765.0 KB 765.0 KB 765.0 KB 765.0 KB 765.0 KB765.0 KB765.0 KB0 b0.00 %
HTML Transfer Size 124.2 KB 124.2 KB 124.2 KB 124.2 KB 124.2 KB124.2 KB124.2 KB0 b0.00 %
JavaScript Transfer Size 306.5 KB 306.5 KB 306.5 KB 306.5 KB 306.5 KB306.5 KB306.5 KB0 b0.00 %
CSS Transfer Size 27.0 KB 27.0 KB 27.0 KB 27.0 KB 27.0 KB27.0 KB27.0 KB0 b0.00 %
Font Transfer Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %
Favicon Transfer Size 2.0 KB 2.0 KB 2.0 KB 2.0 KB 2.0 KB2.0 KB2.0 KB0 b0.00 %
Plain Transfer Size 973 B 973 B 973 B 973 B 973 B973 B973 B0 b0.00 %
SVG Transfer Size 82.7 KB 82.7 KB 82.7 KB 82.7 KB 82.7 KB82.7 KB82.7 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 %
Plain 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 57 57 57 57 57575700.00 %
First Party Total Transfer Size 765.0 KB 765.0 KB 765.0 KB 765.0 KB 765.0 KB765.0 KB765.0 KB0 b0.00 %
First Party Total Content Size 0 b 0 b 0 b 0 b 0 b0 b0 b0 b0.00 %