97ms
first token, ONE /chat
Speed proof · 2026-05-15
97 milliseconds to first token.
Lighthouse doesn't round up to prove it.
Run today against one.ie/chat with Lighthouse 13.2.0 on headless Chrome, mobile emulation. Not a benchmark deck — a report you can re-run in the next five minutes.
80ms
main-thread blocking time (TBT)
100 / 100
Best Practices · SEO — Lighthouse
248 KB
JS payload shipped to the browser
Speed
Speed is a measurement. Not a claim.
The page times itself while you read: page load, first token, latest audit — dated, reproducible, measured on the surface making the claim. The bars carry the proportions; ask the chat for the figures, dates attached.
Lighthousemeasured
Performance
Accessibility
Best Practices
SEO
vs ChatGPT · Claude.ai · asi1.ai — ask the chat for their dated scores
First token on screenfastest measured
ONE /chat
asi1.ai
Claude.ai
ChatGPT
median, from the browser · ONE measured · competitors estimated · hover a bar for its figure
Live — your browser measured this
This page loaded in—
First token of this chat—
Lighthouse measured
Page weightlightest measured
ONE /chat
asi1.ai
ChatGPT
Claude.ai
JS transfer size · ONE measured · competitors estimated via WebPageTest · hover a bar for its figure
Fast network (rttMs=40, 10Mbps, 4× CPU)
Matches the config quoted in our own speed claims — so competitors aren't run under a harsher preset than we are.
| Site | Perf | A11y | Best Practices | SEO | TBT |
|---|---|---|---|---|---|
| one.ie/chat | 99 | 95 | 100 | 100 | 80ms |
| platform.openai.com/playground | 70 | 98 | 77 | 91 | 1,010ms |
| claude.ai (→ /login) | 66 | 97 | 77 | 92 | 1,460ms |
| chatgpt.com | 51 | 96 | 73 | 100 | 1,480ms |
Run-to-run variance is ±5 points on this test rig; differences under 5 are noise, not signal.
Slow 4G (Lighthouse's stock mobile preset)
The harsher, default test. Our Performance score drops under a throttled connection too — everyone's does — but the gap to competitors holds.
| Site | Perf | JS + assets transferred |
|---|---|---|
| one.ie/chat | 58 | 1,313 KB |
| chatgpt.com | 40 | 4,438 KB |
| platform.openai.com/playground | 36 | 953 KB |
| claude.ai | 28 | 4,234 KB |
How to re-run this yourself
Every number on this page comes from a Lighthouse CLI run against a live URL.
# Fast-network config (matches the numbers above)
npx lighthouse https://one.ie/chat --preset=desktop --throttling.rttMs=40 --throttling.throughputKbps=10240 --output=json
# Stock mobile preset (Slow 4G, harsher)
npx lighthouse https://one.ie/chat --output=json
Raw reports: text/build/lighthouse/*.report.json. Full write-up: text/build/lighthouse/comparison.md.
What I'll be honest about
Three gaps in this proof, named upfront — a caveat you find yourself costs more trust than one we hand you.
- ·Performance drops to 58 on Slow 4G. That's still ahead of every competitor tested (28–40), but it isn't the 99–100 the fast-network table shows. Both numbers are on this page, not just the flattering one.
- ·claude.ai's score is for its logged-out /login redirect, not the authenticated chat app — an unauthenticated visitor never sees the heavier real interface, so the comparison likely undersells how much heavier Claude's actual app is.
- ·asi1.ai's numbers in the panel above are estimated, not measured — hover the bar and it says so. We haven't run Lighthouse against it yet; treat that row as a placeholder until it is.
"The faster you go, the more it feels like a different product."
— Patrick Collison, Stripe