Your private
AI boardroom
for decisions that matter.
Specialist AI advisors challenge your assumptions, debate the options and record a vote with their reasoning. You walk away with an Executive Decision Brief you can act on.
cernō · Latin — to sift, distinguish and decide.
Big decisions rarely fail for lack of an opinion.
They fail because the assumptions were never challenged, the risks were never made explicit, and the reasoning was never written down. Cerno turns instinct and scattered conversation into a structured process — specialist challenge, a recorded vote with its reasoning, scored risk and confidence, and a record you can return to.
How Cerno works
Frame the decision
State the decision, context, constraints and options. Set the mandate: quick read, full debate, risk scan or red team.
Seat the advisors
Cerno assembles specialist lenses — strategy, finance, risk, customer, operations, future — or start from a preset panel in one tap.
Challenge & vote
The Chairperson runs the debate, advisors challenge the assumptions, then vote on the best path — reasoning recorded.
Receive the brief
Cerno produces an Executive Decision Brief: recommendation, risk, confidence, objections and next actions.
A structured process, not a single chat answer.
Cerno brings multiple advisor perspectives into one controlled flow — challenge, vote, risk, confidence and next actions. You watch the decision being made, not just read an answer.
An Executive Decision Brief, not a wall of chat.
Every session ends with a structured record: the recommendation, the vote and its reasoning, risks, confidence, assumptions, objections and next actions. Print it, export it, drop it in a board pack — or seat “Future You” and run it for a personal call.
Proceed — conditional on securing the lease below £42/sq ft and hiring a site lead before commitment.
- ›Current site at 95% utilisation.
- ݣ180k inbound enquiries this quarter.
- ›Enquiries convert at ~30%.
- ›Fit-out completes in 10 weeks.
Commission an independent demand study.
Shortlist a site lead before any lease is signed.
Secure the lease at or below £42/sq ft.
Why not just ask a chatbot?
A chatbot
One answer, then it’s gone.
- ✕Single response
- ✕Limited challenge
- ✕No formal vote
- ✕No decision record
- ✕Easy to miss assumptions
- ✕Output lost in chat history
Cerno
A structured decision, on the record.
- ✓Private AI boardroom
- ✓Multiple advisor lenses
- ✓Challenge round
- ✓Recorded vote with reasoning
- ✓Risk & confidence scores
- ✓Facts separated from assumptions
- ✓Executive Decision Brief & Journal
Built for decisions that matter.
Founder decisions
Pressure-test the big calls — raise or bootstrap, pivot, when to double down — from every angle before you commit.
Hiring & people
Test a key hire, promotion or restructure against capability, cost, timing and the downside case.
Investment & spend
Returns, defensibility, downside and evidence — challenged and scored before the money moves.
Strategy & market entry
Weigh a market entry, positioning bet or new line against demand, timing and how it could break.
Risk & compliance
A systematic exposure scan: what goes wrong, how badly, what mitigates it, what needs evidence.
Product & pricing
Stress-test scope, pricing, packaging and timing before you ship — assumptions made explicit.
Buying a car or house
Total cost, timing, downside and regret — weighed before you sign, not after.
Job offers & career
Test the offer against money, meaning, momentum and where it leaves you in five years.
Relocation
A move judged on work, family, cost of living and what you would be giving up.
Major purchases
Big-ticket commitments challenged on value, terms and the downside case.
Education & family
School, study and family decisions worked through with the trade-offs on the table.
Personal decisions are a designed-for case, not an afterthought: seat “Future You” as an advisor, or run it in the Personal Mentor Study. Where a decision touches financial, legal or medical ground, Evidence Mode flags where professional advice is needed.
An auditable record of every decision.
Every decision is saved with its brief, assumptions, risk and confidence. Revisit the assumptions, record what you actually did, track the outcome — and learn from previous decisions instead of repeating them.
Open the Decision Journal →Your deliberations stay yours.
Decisions and briefs are visible only to you. We don't train AI models on your decisions, and you can delete your account and everything in it at any time.
Start with your next
major decision.
Structure the decision, challenge the assumptions and produce a brief you can return to. Free to start — upgrade for unlimited advisors and saved history.
Decision-support only. Not legal, financial, medical or professional advice. You remain responsible for your decisions. AI output can be wrong — verify important facts. Advisor archetypes are inspired by documented thinking styles, not real people. No impersonation of real living individuals and no voice cloning.