https://en.wikipedia.org/wiki/ChatGPT
Tested 2026-08-24 23:58:09 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 | 404 ms | 422 ms | 404 ms | 403 ms | 402 ms | 404 ms | 407 ms | 8 ms | 1.85 % |
| Largest Contentful Paint | 1.192 s | 1.220 s | 1.180 s | 1.192 s | 1.192 s | 1.192 s | 1.195 s | 13 ms | 1.11 % |
| Total Blocking Time | 8 ms | 9 ms | 6 ms | 9 ms | 2 ms | 8 ms | 7 ms | 3 ms | 38.80 % |
| Cumulative Layout Shift | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 | 0.001 | 0 | 0.00 % |
| Timing metrics | |||||||||
| First Paint | 1.192 s | 1.220 s | 1.180 s | 1.192 s | 1.192 s | 1.192 s | 1.195 s | 13 ms | 1.11 % |
| Largest Contentful Paint | 1.192 s | 1.220 s | 1.180 s | 1.192 s | 1.192 s | 1.192 s | 1.195 s | 13 ms | 1.11 % |
| Load Event End | 1.492 s | 1.517 s | 1.483 s | 1.494 s | 1.486 s | 1.492 s | 1.494 s | 12 ms | 0.80 % |
| Server Response Time | 509 ms | 509 ms | 510 ms | 508 ms | 509 ms | 509 ms | 509 ms | 1 ms | 0.12 % |
| TTFB | 404 ms | 422 ms | 404 ms | 403 ms | 402 ms | 404 ms | 407 ms | 8 ms | 1.85 % |
| Page Load Time | 1.492 s | 1.517 s | 1.483 s | 1.494 s | 1.486 s | 1.492 s | 1.494 s | 12 ms | 0.80 % |
| First Visual Change | 1.200 s | 1.233 s | 1.200 s | 1.200 s | 1.200 s | 1.200 s | 1.207 s | 13 ms | 1.09 % |
| Last Visual Change | 1.900 s | 1.900 s | 1.866 s | 1.866 s | 1.866 s | 1.866 s | 1.880 s | 17 ms | 0.89 % |
| Speed Index | 1.215 s | 1.247 s | 1.214 s | 1.214 s | 1.214 s | 1.214 s | 1.221 s | 13 ms | 1.07 % |
| Visual Readiness | 700 ms | 667 ms | 666 ms | 666 ms | 666 ms | 666 ms | 673 ms | 14 ms | 2.01 % |
| Visual Complete 95 | 1.200 s | 1.233 s | 1.200 s | 1.200 s | 1.200 s | 1.200 s | 1.207 s | 13 ms | 1.09 % |
| Visual Complete 99 | 1.800 s | 1.833 s | 1.766 s | 1.800 s | 1.800 s | 1.800 s | 1.800 s | 21 ms | 1.18 % |
| CPU metrics | |||||||||
| Total Blocking Time | 8 ms | 9 ms | 6 ms | 9 ms | 2 ms | 8 ms | 7 ms | 3 ms | 38.80 % |
| Max Potential FID | 57 ms | 59 ms | 56 ms | 59 ms | 52 ms | 57 ms | 57 ms | 3 ms | 4.55 % |
| Number of Long Tasks | 3 | 3 | 4 | 3 | 3 | 3 | 3 | 0 | 12.50 % |
| Total Duration of Long Tasks | 343 ms | 348 ms | 382 ms | 343 ms | 336 ms | 343 ms | 350 ms | 16 ms | 4.64 % |
| Browser metrics | |||||||||
| CPU benchmark score | 42 ms | 34 ms | 34 ms | 46 ms | 46 ms | 42 ms | 40 ms | 5 ms | 13.43 % |
| 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 | 6 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 | 1 B | 0.00 % |
| 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 | 0.00 % |
| Plain Transfer Size | 905 B | 904 B | 905 B | 905 B | 905 B | 905 B | 905 B | 0 b | 0.04 % |
| SVG Transfer Size | 80.6 KB | 80.6 KB | 80.6 KB | 80.6 KB | 80.6 KB | 80.6 KB | 80.6 KB | 5 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 | 6 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 % |
