Cerno

Deciding with a partner or co-founder? Open a joint decision

Start a decision

Put your decision to a board of AI advisors.

Write the decision, choose your advisors and a mode. The board debates it, votes, and gives you an Executive Decision Brief.

Start here (optional)

What kind of decision is this?

Pick a category and we'll pre-configure the room — advisors, mandate, environment and Evidence Mode — tuned to that kind of decision. You can fine-tune everything below, or skip this entirely.

Quick start

Start from a preset panel

Each preset seats a curated set of advisors and a sensible default mandate. You can fine-tune the seats below afterwards.

Step 1

Choose the setting

The environment shapes how the board behaves — the Chair's style, debate intensity, the voting threshold, risk appetite, and the report — not just the look. Decision Room is the balanced default; every other room unlocks with Founder or a Decision Pack.

Step 2

Choose your advisors

5 advisors seated. Free plan seats up to 3. Upgrade for unlimited.

Step 3

Set the mandate

Step 4

State the decision

Not supported in this browser

When enabled, the board separates known facts, assumptions, missing information and evidence needed before recommending — and is more careful.

Evidence (optional — text the board should read)0/1
Text only. Up to 1 attachment on your plan.

Saved on this device as you type — your draft is here if you come back.

The StrategistThe CFOThe Risk OfficerThe Customer AdvocateThe Futurist

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.