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About

Built in the UK, in public, against the grain.

Most prediction products claim spectacular accuracy and publish nothing you can check. LEXUN is built on the opposite bet: that the way to earn trust in a forecast is to show the method, freeze the prediction, and score it against what actually happens — in public.

The story

LEXUN started in 2026 as a single question: why does every "AI decision" tool give you a confident answer and no way to find out if it was right? The founder built the first release-gated model — UK business cash runway — around three rules that still govern every line of the product: no displayed number without a source, "insufficient evidence" is a real answer, and every forecast freezes its resolution criterion so success cannot be redefined after the event.

Who is behind it

Founder & product — LEXUN is currently founder-built and founder-run, from the United Kingdom. We do not pad this page with stock photos or invented advisers: as the team grows, real names, roles and photographs will be published here. That is a deliberately uncomfortable honesty — the same standard we apply to our accuracy numbers.

LEXUN is a service of CA Capital Limited, a company registered at Companies House in the United Kingdom. It is registered in England and Wales, company number 10848369, registered office 320 Firecrest Court, Centre Park, Warrington, United Kingdom, WA1 1RG. ICO registration ZC183768. That record is public and checkable — view it at Companies House rather than taking this page’s word for it. LEXUN is a trading name of CA Capital Limited and is not connected to any cryptocurrency exchange or to any other company using a similar name. Correspondence: hello@lexun.co.uk.

What we believe
  • Calibration beats confidence. A 65% forecast that is right 65% of the time is worth more than a "99% accurate" claim nobody can audit.
  • Reproducibility is respect. Every result carries its seed, model version and input hash — anyone can re-run it and get the identical output. Try it.
  • The small number is published. Six outcomes have resolved so far, and our Accuracy Centre says exactly that — and it shows no accuracy percentage until at least ten have. The numbers will mean something precisely because we refused to invent them early.
  • The record is the moat, not the screen. The interface is copyable in a weekend; a scored track record can only be filled in forwards. We set out what that defence is — and what it is not — on the defensibility page.

Contact

General: hello@lexun.co.uk · Privacy: privacy@lexun.co.uk

Questions people actually ask

What is LEXUN?

LEXUN is a decision-intelligence engine that runs in your browser. It turns a consequential business or personal decision into a banded probability with the evidence, the assumptions and the strongest counter-argument shown alongside it, then freezes the forecast and scores it against reality once the outcome is known.

Can LEXUN predict the future?

No, and it never claims to. LEXUN estimates possible futures: it runs 5,000 seeded simulation paths over the figures you enter, shows a probability band rather than a false point, states what would change the answer, and records the forecast so reality can grade it later. Certainty is the one thing it refuses to sell.

How accurate is LEXUN?

The register publishes no accuracy percentage for any domain until at least ten outcomes have resolved there, because a smaller sample cannot support the claim. What exists today is public and checkable: twelve forecasts issued, six resolved against official figures as first published, each Brier-scored on the forecast register.

Is LEXUN free?

Yes. Running a decision needs no account and no card. Saving your record needs only a passcode that encrypts it on your own device.

Is my data private?

Your decision data stays in your browser, encrypted under your own passcode. The one exception is the optional Copilot: it sends what you deliberately type into it to the AI provider (if you type a figure there, that figure is included), and the result tools send only the filtered result summary that the Privacy notice describes. There is no server-side store of scenarios and no advertising or tracking cookies. What can leave the device is only what you choose to send: an email address on a form, a payment made on Stripe's own page, and the words you type to the optional Copilot (which never receives your saved decisions or the figures you entered).