x.ai
Data from Aug 31, 2026, 9:09 PM UTC old
Overall #1,525 AI #13 Developer Tooling #96 · 1 measurement · since Aug 31, 2026
Stack
Core Web Vitals field data, url-level
Real Chrome users, 28-day window (2026-08-02 → 2026-08-29).
Lighthouse Scores
Filmstrip Lighthouse, mobile
How the page drew during the measured load, at 8 points across 4.58 s.
-
572 ms
-
1.14 s
-
1.72 s
-
2.29 s
-
2.86 s
-
3.43 s
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4.00 s
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4.58 s
Without JavaScript
Nothing was painted until the scripts ran. This is a web performance and robustness issue!
The same load, photographed twice at 412×823: once with scripts disabled, once as rendered.
21.5% of pixels differ — parts of the page change. A shifted layout counts as difference, so a <noscript> banner alone can account for a large figure.
Lab metrics Lighthouse, mobile
| Metric | Current | Previous | Change | Best | Worst | Trend |
|---|---|---|---|---|---|---|
| LCP Largest Contentful Paint | 20.91 s | — | — | 20.91 s | 20.91 s | |
| CLS Cumulative Layout Shift | 0 | — | — | 0 | 0 | |
| TBT Total Blocking Time | 3.20 s | — | — | 3.20 s | 3.20 s | |
| FCP First Contentful Paint | 1.76 s | — | — | 1.76 s | 1.76 s | |
| Speed Index | 9.49 s | — | — | 9.49 s | 9.49 s | |
| TTFB Time to First Byte | 626 ms | — | — | 626 ms | 626 ms |
LCP Subparts lab observed, unthrottled
The subparts attribute LCP to your server, resource discovery, download, or rendering. Note that the Lab metrics LCP metric shown above is throttled.
Field data Chrome UX Report, url-level
Real Chrome users, 28-day trailing window (2026-08-02 → 2026-08-29).
| Metric | p75 | Rating | Distribution (good / needs work / poor) |
|---|---|---|---|
| LCP CWV | 5.74 s | poor | 44% good |
| INP CWV Interaction to Next Paint — field only, Lighthouse cannot measure this in a lab run | 572 ms | poor | 49.6% good |
| CLS CWV | 0.010 | good | 98.4% good |
| FCP | 2.26 s | needs-improvement | 59.8% good |
| TTFB | 1.07 s | needs-improvement | 62.5% good |
Lab LCP vs Field LCP
The lab LCP is 3.64× the field p75 — real users likely have above-average hardware or network connectivity.
Field history 25 weeks
Weekly p75 from the CrUX History API, backfilled in a single request.
| Week ending | LCP | INP | CLS | FCP | TTFB |
|---|---|---|---|---|---|
| 2026-08-29 | 5.74 s | 572 ms | 0.010 | 2.26 s | 1.07 s |
| 2026-08-22 | 5.47 s | 533 ms | 0.010 | 2.22 s | 1.05 s |
| 2026-08-15 | 5.23 s | 505 ms | 0.010 | 2.19 s | 1.05 s |
| 2026-08-08 | 5.09 s | 479 ms | 0.010 | 2.18 s | 1.09 s |
| 2026-08-01 | 5.05 s | 448 ms | 0.010 | 2.17 s | 1.13 s |
| 2026-07-25 | 4.95 s | 414 ms | 0.010 | 2.20 s | 1.17 s |
| 2026-07-18 | 4.84 s | 365 ms | 0.010 | 2.23 s | 1.22 s |
| 2026-07-11 | 4.68 s | 318 ms | 0.010 | 2.23 s | 1.25 s |
| 2026-07-04 | 4.51 s | 283 ms | 0.010 | 2.22 s | 1.24 s |
| 2026-06-27 | 4.45 s | 270 ms | 0.010 | 2.17 s | 1.19 s |
| 2026-06-20 | 4.30 s | 265 ms | 0.010 | 2.07 s | 1.11 s |
| 2026-06-13 | 3.90 s | 260 ms | 0 | 2.00 s | 1.03 s |
Page weight
| Metric | Current | Previous | Change | Best | Worst | Trend |
|---|---|---|---|---|---|---|
| Page Weight | 3.61 MB | — | — | 3.61 MB | 3.61 MB | |
| Requests | 129 | — | — | 129 | 129 | |
| Third-party Weight | 716 kB | — | — | 716 kB | 716 kB | |
| Third-party CPU | 236 ms | — | — | 236 ms | 236 ms | |
| Unused JS | 581 kB | — | — | 581 kB | 581 kB | |
| Unused CSS | 62.3 kB | — | — | 62.3 kB | 62.3 kB |
By resource type
- script 49.7% 1.80 MB · 57 req
- other 24.8% 896 kB · 44 req
- image 12.4% 449 kB · 9 req
- font 10.5% 380 kB · 9 req
- stylesheet 1.6% 56.9 kB · 9 req
- document 1% 36.0 kB · 1 req
Third parties 6 entities
716 kB transferred, 236 ms on the main thread.
Page health
| Metric | Current | Previous | Change | Best | Worst | Trend |
|---|---|---|---|---|---|---|
| Main Thread Work | 11.76 s | — | — | 11.76 s | 11.76 s | |
| Long Tasks | 20 | — | — | 20 | 20 | |
| DOM Elements | 1,219 | — | — | 1,219 | 1,219 | |
| Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) | 102 | — | — | 102 | 102 | |
| A11y Failures | 5 | — | — | 5 | 5 | |
| A11y Failing Nodes | 71 | — | — | 71 | 71 |
Main thread work
Axe violations axe-core 4.13.0, full rule set
102 violating nodes across 6 rules, 1121 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.
-
serious
color-contrast— Elements must meet minimum color contrast ratio thresholds 68 nodes -
moderate
region— All page content should be contained by landmarks 30 nodes -
critical
button-name— Buttons must have discernible text 1 node -
moderate
landmark-one-main— Document should have one main landmark 1 node -
moderate
meta-viewport— Zooming and scaling must not be disabled 1 node -
serious
scrollable-region-focusable— Scrollable region must have keyboard access 1 node
Accessibility failures 5 of 27 audits
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color-contrast— Background and foreground colors do not have a sufficient contrast ratio. 67 nodes -
button-name— Buttons do not have an accessible name 1 node -
meta-viewport— `[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5. 1 node -
landmark-one-main— Document does not have a main landmark. 1 node -
label-content-name-mismatch— Elements with visible text labels do not have matching accessible names. 1 node
Hygiene
Measurement log
Every stored run for this URL, newest first.
| When | Perf | LCP | CLS | TBT | Weight | Runs | Spread | Bench | Took |
|---|---|---|---|---|---|---|---|---|---|
| Aug 31, 2026, 9:09 PM UTC | 36 | 20.91 s | 0 | 3.20 s | 3.61 MB | 3/3 | ±1 | 2,455 -1% | 55.1s |