https://en.wikipedia.org/wiki/ChatGPT
Tested 2026-08-24 20:41:33 using Chrome 151.0.7922.75 (runtime settings)
| Metric | Run 1 | Run 2 | Run 3 | Run 4 | Run 5 | Median | Mean | Stddev | RSD |
|---|---|---|---|---|---|---|---|---|---|
| Google Web Vitals | |||||||||
| Time to First Byte | 402 ms | 404 ms | 405 ms | 403 ms | 413 ms | 404 ms | 405 ms | 4 ms | 0.97 % |
| Largest Contentful Paint | 1.188 s | 1.196 s | 1.220 s | 1.220 s | 1.152 s | 1.196 s | 1.195 s | 25 ms | 2.10 % |
| Total Blocking Time | 5 ms | 9 ms | 6 ms | 7 ms | 16 ms | 7 ms | 9 ms | 4 ms | 45.69 % |
| Cumulative Layout Shift | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 | 0 | 0.00 % |
| Timing metrics | |||||||||
| First Paint | 1.188 s | 1.196 s | 1.220 s | 1.220 s | 1.152 s | 1.196 s | 1.195 s | 25 ms | 2.10 % |
| Largest Contentful Paint | 1.188 s | 1.196 s | 1.220 s | 1.220 s | 1.152 s | 1.196 s | 1.195 s | 25 ms | 2.10 % |
| Load Event End | 1.622 s | 1.615 s | 1.628 s | 1.626 s | 1.456 s | 1.622 s | 1.589 s | 67 ms | 4.21 % |
| Server Response Time | 451 ms | 452 ms | 452 ms | 450 ms | 444 ms | 451 ms | 450 ms | 3 ms | 0.67 % |
| TTFB | 402 ms | 404 ms | 405 ms | 403 ms | 413 ms | 404 ms | 405 ms | 4 ms | 0.97 % |
| Page Load Time | 1.621 s | 1.614 s | 1.627 s | 1.626 s | 1.456 s | 1.621 s | 1.589 s | 67 ms | 4.19 % |
| First Visual Change | 1.200 s | 1.200 s | 1.200 s | 1.200 s | 1.133 s | 1.200 s | 1.187 s | 27 ms | 2.26 % |
| Last Visual Change | 1.566 s | 1.566 s | 1.600 s | 1.600 s | 1.866 s | 1.600 s | 1.640 s | 114 ms | 6.97 % |
| Speed Index | 1.210 s | 1.210 s | 1.213 s | 1.211 s | 1.149 s | 1.210 s | 1.199 s | 25 ms | 2.07 % |
| Visual Readiness | 366 ms | 366 ms | 400 ms | 400 ms | 733 ms | 400 ms | 453 ms | 141 ms | 31.09 % |
| Visual Complete 95 | 1.200 s | 1.200 s | 1.200 s | 1.200 s | 1.133 s | 1.200 s | 1.187 s | 27 ms | 2.26 % |
| Visual Complete 99 | 1.500 s | 1.433 s | 1.500 s | 1.500 s | 1.766 s | 1.500 s | 1.540 s | 116 ms | 7.54 % |
| CPU metrics | |||||||||
| Total Blocking Time | 5 ms | 9 ms | 6 ms | 7 ms | 16 ms | 7 ms | 9 ms | 4 ms | 45.69 % |
| Max Potential FID | 55 ms | 59 ms | 54 ms | 57 ms | 59 ms | 57 ms | 57 ms | 2 ms | 3.59 % |
| Number of Long Tasks | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 0 | 18.84 % |
| Total Duration of Long Tasks | 335 ms | 332 ms | 393 ms | 392 ms | 380 ms | 380 ms | 366 ms | 27 ms | 7.44 % |
| Browser metrics | |||||||||
| CPU benchmark score | 42 ms | 36 ms | 34 ms | 34 ms | 34 ms | 34 ms | 36 ms | 3 ms | 8.61 % |
| Page metrics | |||||||||
| Cumulative Layout Shift | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 | 0 | 0.00 % |
| DOM elements | 9217 | 9217 | 9217 | 9217 | 9217 | 9217 | 9217 | 0 | 0.00 % |
| Document height | 27271 | 27271 | 27271 | 27271 | 27271 | 27271 | 27271 | 0 | 0.00 % |
| Total Requests | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 0 | 0.00 % |
| HTML Requests | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0.00 % |
| JavaScript Requests | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 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 | 599.6 KB | 599.6 KB | 599.6 KB | 599.6 KB | 599.6 KB | 599.6 KB | 599.6 KB | 3 B | 0.00 % |
| HTML Transfer Size | 182.8 KB | 182.8 KB | 182.8 KB | 182.8 KB | 182.8 KB | 182.8 KB | 182.8 KB | 0 b | 0.00 % |
| JavaScript Transfer Size | 288.7 KB | 288.7 KB | 288.7 KB | 288.7 KB | 288.7 KB | 288.7 KB | 288.7 KB | 1 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 | 3 B | 0.01 % |
| 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 | 0.03 % |
| Plain Transfer Size | 905 B | 905 B | 905 B | 905 B | 903 B | 905 B | 905 B | 1 B | 0.09 % |
| SVG Transfer Size | 80.6 KB | 80.6 KB | 80.6 KB | 80.6 KB | 80.6 KB | 80.6 KB | 80.6 KB | 4 B | 0.01 % |
| Total Content Size | 2.6 MB | 2.6 MB | 2.6 MB | 2.6 MB | 2.6 MB | 2.6 MB | 2.6 MB | 0 b | 0.00 % |
| HTML 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 % |
| 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 | 214.7 KB | 214.7 KB | 214.7 KB | 214.7 KB | 214.7 KB | 214.7 KB | 214.7 KB | 0 b | 0.00 % |
| Image Content Size | 8.5 KB | 8.5 KB | 8.5 KB | 8.5 KB | 8.5 KB | 8.5 KB | 8.5 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 | 146.2 KB | 146.2 KB | 146.2 KB | 146.2 KB | 146.2 KB | 146.2 KB | 146.2 KB | 0 b | 0.00 % |
| Third Party metrics | |||||||||
| First Party metrics | |||||||||
| First Party Requests | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 0 | 0.00 % |
| First Party Total Transfer Size | 599.6 KB | 599.6 KB | 599.6 KB | 599.6 KB | 599.6 KB | 599.6 KB | 599.6 KB | 3 B | 0.00 % |
| First Party Total Content Size | 2.6 MB | 2.6 MB | 2.6 MB | 2.6 MB | 2.6 MB | 2.6 MB | 2.6 MB | 0 b | 0.00 % |
