Check of ciunkos.com/ai-prompt-testing

Nov 11, 2026, 13:41 · daily

Lighthouse 13.5 (mobile, simulated throttling), median of three runs. Scores 0–100: 90 and up green, 50–89 orange, below 50 red; a dash means the category was not measured in that check.

TBT is the lab stand-in for INP, which needs real interactions.

Performance
100good±0 vs previous±0 vs 7-day median
LCP
910 msgood−5 ms vs previous−7 ms vs 7-day median
CLS
0good±0 vs previous±0 vs 7-day median
TBT
0 msgood±0 vs previous±0 vs 7-day median
FCP
910 msgood−5 ms vs previous−7 ms vs 7-day median
TTFB
10 msgood−46 ms vs previous−32 ms vs 7-day median

No slowdown against the previous check and the 7-day median.

First screen: https://ciunkos.com/ai-prompt-testing
First screen
LCP element
section.hero > div.wrap > div > p.lead You fix one answer in the system prompt and three others quietly get worse. Eva…
Page weight
22 KB
Long tasks
1
Conditions
Lighthouse 13.5.0, mobile (Moto G Power emulation, 412×823), simulated throttling (150 ms RTT, 1.6 Mbps, CPU 4×), median of 3 runs, benchmarkIndex 2636

Loads

LoadPerfLCPFCPTBTCLSTTFB
1100916 ms916 ms0 ms065 ms
2100910 ms910 ms0 ms08 ms
3100910 ms910 ms0 ms010 ms

What failed

Performance 100

Accessibility 100

Nothing failed in this category.

Best Practices 100

Nothing failed in this category.

SEO 100

Nothing failed in this category.

Google PageSpeed Insights: Comparison details

Vitals Desk is the primary measurement. Google adds one mobile lab run from its servers. This comparison does not change our scores, history or slowdown emails.

Substantial differences: LCP, TBT, FCP

The Lighthouse versions differ; scores and checks may not be directly comparable.

Different locations, hardware, Lighthouse versions and a single run versus our three-run median can produce different results. These are comparison notes, not regression alerts.

Google PageSpeed Insights
MetricVitals DeskGoogleGoogle minus Vitals Desk
Performance10096−4
Accessibility100100±0
Best Practices10092−8
SEO100100±0
LCP910 ms1.5 s+621 ms
CLS00±0
TBT0 ms157 ms+157 ms
FCP910 ms1.5 s+621 ms
TTFB10 ms1 ms−9 ms
Lighthouse version
13.6.0
Google checked at
Nov 11, 2026, 13:41
Google’s final URL
https://ciunkos.com/ai-prompt-testing

Additional failed checks in Google’s sample

These appear in Google’s saved sample but not in our saved list. Each source keeps a limited list.

  • Speed Index speed-index (Performance)
  • Legacy JavaScript legacy-javascript-insight (Performance)
  • Max Potential First Input Delay max-potential-fid (Performance)
  • Reduce unused JavaScript unused-javascript (Performance)
  • Browser errors were logged to the console errors-in-console (Best Practices)
  • Issues were logged in the `Issues` panel in Chrome Devtools inspector-issues (Best Practices)

Open PageSpeed Insights