https://en.wikipedia.org/wiki/ChatGPT
Tested 2026-09-20 11:53:28 using Chrome 152.0.7977.64 (runtime settings)
| Metric | Run 1 | Run 2 | Run 3 | Run 4 | Run 5 | Median | Mean | Stddev | RSD |
|---|---|---|---|---|---|---|---|---|---|
| Google Web Vitals | |||||||||
| Time to First Byte | 404 ms | 404 ms | 404 ms | 404 ms | 404 ms | 404 ms | 404 ms | 0 ms | 0.00 % |
| Largest Contentful Paint | 1.212 s | 1.204 s | 1.232 s | 1.248 s | 1.228 s | 1.228 s | 1.225 s | 15 ms | 1.26 % |
| Total Blocking Time | 13 ms | 3 ms | 3 ms | 20 ms | 23 ms | 13 ms | 12 ms | 8 ms | 67.20 % |
| Cumulative Layout Shift | 0.032 | 0.032 | 0.032 | 0.032 | 0.032 | 0.032 | 0.032 | 0 | 0.00 % |
| Timing metrics | |||||||||
| First Paint | 1.212 s | 1.204 s | 1.232 s | 1.248 s | 1.228 s | 1.228 s | 1.225 s | 15 ms | 1.26 % |
| Largest Contentful Paint | 1.212 s | 1.204 s | 1.232 s | 1.248 s | 1.228 s | 1.228 s | 1.225 s | 15 ms | 1.26 % |
| Load Event End | 1.528 s | 1.517 s | 1.866 s | 1.886 s | 1.909 s | 1.866 s | 1.741 s | 179 ms | 10.29 % |
| Server Response Time | 516 ms | 517 ms | 525 ms | 525 ms | 525 ms | 525 ms | 522 ms | 4 ms | 0.80 % |
| TTFB | 404 ms | 404 ms | 404 ms | 404 ms | 404 ms | 404 ms | 404 ms | 0 ms | 0.00 % |
| Page Load Time | 1.528 s | 1.517 s | 1.866 s | 1.886 s | 1.909 s | 1.866 s | 1.741 s | 179 ms | 10.29 % |
| First Visual Change | 1.200 s | 1.200 s | 1.200 s | 1.233 s | 1.233 s | 1.200 s | 1.213 s | 16 ms | 1.33 % |
| Last Visual Change | 2.200 s | 2.166 s | 1.900 s | 1.933 s | 1.966 s | 1.966 s | 2.033 s | 125 ms | 6.13 % |
| Speed Index | 1.319 s | 1.309 s | 1.280 s | 1.312 s | 1.316 s | 1.312 s | 1.307 s | 14 ms | 1.07 % |
| Visual Readiness | 1.000 s | 966 ms | 700 ms | 700 ms | 733 ms | 733 ms | 820 ms | 134 ms | 16.37 % |
| Visual Complete 95 | 2.200 s | 2.166 s | 1.900 s | 1.933 s | 1.966 s | 1.966 s | 2.033 s | 125 ms | 6.13 % |
| Visual Complete 99 | 2.200 s | 2.166 s | 1.900 s | 1.933 s | 1.966 s | 1.966 s | 2.033 s | 125 ms | 6.13 % |
| CPU metrics | |||||||||
| Total Blocking Time | 13 ms | 3 ms | 3 ms | 20 ms | 23 ms | 13 ms | 12 ms | 8 ms | 67.20 % |
| Max Potential FID | 57 ms | 53 ms | 52 ms | 61 ms | 62 ms | 57 ms | 57 ms | 4 ms | 7.10 % |
| Number of Long Tasks | 3 | 3 | 3 | 4 | 4 | 3 | 3 | 0 | 14.41 % |
| Total Duration of Long Tasks | 421 ms | 395 ms | 392 ms | 480 ms | 481 ms | 421 ms | 434 ms | 39 ms | 9.09 % |
| Browser metrics | |||||||||
| CPU benchmark score | 43 ms | 46 ms | 45 ms | 49 ms | 46 ms | 46 ms | 46 ms | 2 ms | 4.23 % |
| Page metrics | |||||||||
| Cumulative Layout Shift | 0.032 | 0.032 | 0.032 | 0.032 | 0.032 | 0.032 | 0.032 | 0 | 0.00 % |
| DOM elements | 10219 | 10219 | 10220 | 10220 | 10220 | 10220 | 10220 | 0 | 0.00 % |
| Document height | 26728 | 26728 | 26728 | 26728 | 26728 | 26728 | 26728 | 0 | 0.00 % |
| Total Requests | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 0 | 0.00 % |
| HTML Requests | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0.00 % |
| JavaScript Requests | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 0 | 0.00 % |
| CSS Requests | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 0 | 0.00 % |
| Font Requests | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.00 % |
| HTTP Errors | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | N/A |
| Total Transfer Size | 675.7 KB | 675.7 KB | 675.7 KB | 675.7 KB | 675.7 KB | 675.7 KB | 675.7 KB | 7 B | 0.00 % |
| HTML Transfer Size | 192.0 KB | 192.0 KB | 192.0 KB | 192.0 KB | 192.0 KB | 192.0 KB | 192.0 KB | 0 b | 0.00 % |
| JavaScript Transfer Size | 290.0 KB | 290.0 KB | 290.0 KB | 290.0 KB | 290.0 KB | 290.0 KB | 290.0 KB | 4 B | 0.00 % |
| CSS Transfer Size | 29.0 KB | 29.0 KB | 29.0 KB | 29.0 KB | 29.0 KB | 29.0 KB | 29.0 KB | 5 B | 0.02 % |
| Font Transfer Size | 0 b | 0 b | 0 b | 0 b | 0 b | 0 b | 0 b | 0 b | 0.00 % |
| Favicon Transfer Size | 1.8 KB | 1.8 KB | 1.8 KB | 1.8 KB | 1.8 KB | 1.8 KB | 1.8 KB | 0 b | 0.02 % |
| Plain Transfer Size | 904 B | 904 B | 905 B | 905 B | 905 B | 905 B | 905 B | 0 b | 0.05 % |
| SVG Transfer Size | 86.9 KB | 86.9 KB | 86.9 KB | 86.9 KB | 86.9 KB | 86.9 KB | 86.9 KB | 7 B | 0.01 % |
| Total Content Size | 2.7 MB | 2.7 MB | 2.7 MB | 2.7 MB | 2.7 MB | 2.7 MB | 2.7 MB | 0 b | 0.00 % |
| HTML Content Size | 1.2 MB | 1.2 MB | 1.2 MB | 1.2 MB | 1.2 MB | 1.2 MB | 1.2 MB | 0 b | 0.00 % |
| JavaScript Content Size | 1.1 MB | 1.1 MB | 1.1 MB | 1.1 MB | 1.1 MB | 1.1 MB | 1.1 MB | 0 b | 0.00 % |
| CSS Content Size | 213.5 KB | 213.5 KB | 213.5 KB | 213.5 KB | 213.5 KB | 213.5 KB | 213.5 KB | 0 b | 0.00 % |
| Image Content Size | 61.6 KB | 61.6 KB | 61.6 KB | 61.6 KB | 61.6 KB | 61.6 KB | 61.6 KB | 0 b | 0.00 % |
| Font Content Size | 0 b | 0 b | 0 b | 0 b | 0 b | 0 b | 0 b | 0 b | 0.00 % |
| Favicon Content Size | 2.7 KB | 2.7 KB | 2.7 KB | 2.7 KB | 2.7 KB | 2.7 KB | 2.7 KB | 0 b | 0.00 % |
| Plain Content Size | 0 b | 0 b | 0 b | 0 b | 0 b | 0 b | 0 b | 0 b | 0.00 % |
| SVG Content Size | 161.0 KB | 161.0 KB | 161.0 KB | 161.0 KB | 161.0 KB | 161.0 KB | 161.0 KB | 0 b | 0.00 % |
| Third Party metrics | |||||||||
| First Party metrics | |||||||||
| First Party Requests | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 0 | 0.00 % |
| First Party Total Transfer Size | 675.7 KB | 675.7 KB | 675.7 KB | 675.7 KB | 675.7 KB | 675.7 KB | 675.7 KB | 7 B | 0.00 % |
| First Party Total Content Size | 2.7 MB | 2.7 MB | 2.7 MB | 2.7 MB | 2.7 MB | 2.7 MB | 2.7 MB | 0 b | 0.00 % |
