Recorded runs · 27 worked examples · 9 domains

Real questions, two answers each — and the decision Decider made

These are recorded Decider runs, reviewed one by one before publication. Same shape every time: a question, two candidate answers, a pick, a calibrated confidence value and the reasoning that came with it. They are here so you can judge the product on real work rather than on a demo script.

Reading the confidence value: 90%+ means decisive, 80–90% a clear edge, 70–80% act after a quick look, below 70% a near-tie where either choice is defensible. It is a reading of how close the call was — not a promise that a pick is right. How it is measured →

Business

Two products, one team of six. One retains well and grows slowly; the other grows fast and us…	B	73.3%
A large client wants a year-long contract, but their setup needs features we would only ever…	B	80.0%
We have the budget for one senior hire or two juniors. Which do we do?	A	68.3%

Career

Two offers, and I have to answer by Friday. Which one?	B	71.7%
Both doors are open this quarter: a promotion where I am now, or an offer somewhere else. Whi…	B	68.3%
My manager has offered me a team. I am not sure I want to manage people, but I am the bottlen…	A	80.0%

Everyday

I get about two hours a day where I can actually think. Morning or evening?	A	75.0%
I want to learn this properly over the next three months. Course first, or project first?	A	63.3%
We have moved. Two ways to get to work from the new place — which one?	B	61.7%

Money

Two flats, same rent. Which one do we take?	A	68.3%
Same machine, two ways to pay. I have the cash, but it is also our only buffer. Which one?	B	80.0%
My laptop is three years old and slow but it still works. Replace it now or wait a year?	B	27.3%

People

I want to see a friend I have not spoken to in a year. Which message do I send?	B	74.0%
A friend is moving this weekend and asked for my help. My weekend is already full. What do I…	B	70.0%
Two family gatherings fall on the same day, three hours apart. Which plan?	B	71.7%

Research

We submit next week. The effect showed up in the main run and in two of the three repeats. Wh…	A	86.0%
A reviewer said our related work reads like a list rather than an analysis. I have two openin…	A	79.3%
A metric moved four percent this quarter and the team reads it two ways. The report needs one…	A	80.0%

Tech

Two of my engineers have been arguing for two days about the next API change: one endpoint wi…	B	78.3%
We can ship the first version in two weeks on a managed service, or in six weeks on our own i…	A	81.7%
A production bug needs a fix today. Two approaches are on the table — which one?	A	81.7%

Travel

One week of holiday. One city properly, or two cities for three days each?	A	70.0%
Same total budget for flights and hotel. Which combination do we book?	B	70.0%
Ten days away with two children under eight. Which shape for the trip?	A	88.3%

Writing

The delivery slips by a week and it is on our side. The client is one we want to keep. Which…	A	81.7%
A new hire asked how we decide things here, and I want to point them at one short section of…	A	78.3%
I am writing the launch post for the tool we just shipped. I have two openings and cannot dec…	B	70.0%

Try your own two options What Decider is and what it costs

The same 27 examples ship inside the app as free, recorded runs — nothing is charged for looking at them. Try one there, then bring your own two options.