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How it works

One AI answers. A council decides.

Decidi brings several frontier AI models and expert personas into one workspace to review, challenge and stress-test your work — then audits the verdict before you act. Here’s what happens in each step.

What is Decidi?

Decidi is a multi-model AI review and decision workspace for professionals. It uses several AI models and expert personas to review, challenge, improve and stress-test important work before it is sent, published, pitched, shipped, filed, signed or committed.

01

Convene the council

You hand over your work — a contract, a pitch, an app, a plan, an email — and pick the minds to weigh in (or let Decidi seat a sensible council). Each member is a distinct expert persona running on a different frontier model: OpenAI, Anthropic, Google and xAI, side by side.

02

They debate it — in the open

The council runs in parallel rounds. Members state a position, then read and rebut each other, with a Devil’s Advocate attacking the conclusion. Because the models come from different vendors, where one is weak or biased the others catch it — you see exactly where they agree and where they disagree.

03

Final QA signs it off

An impartial moderator synthesises the debate into one verdict — then a proprietary, always-on Final QA audit reviews that verdict against known AI failure modes (hallucinated facts, weak reasoning, missed caveats) and attaches every flag it finds. Nothing is hidden: you see what was caught alongside the verdict.

04

You get a decision you can use

The result is a polished, downloadable deliverable — an audit, a decision memo, a redline, a rewrite — not a chat log. Every run shows the exact credit cost up front, and is saved to your workspace to reopen and download again any time.

Watch one decision go through it

An illustration of the flow — not a real customer’s decision.
“Should we build our own billing system, or use a provider?”
01 · Convene

Decidi seats a council for a build-vs-buy call — a CTO for feasibility, a CFO for the true cost, a Pragmatist for time-to-value and a Devil’s Advocate to attack the popular answer — each running on a different frontier model.

02 · Debate

The CTO argues in-house gives control; the CFO prices the maintenance cost most estimates ignore; the Devil’s Advocate attacks the “we’ll customise it later” assumption. Two models lean build, one leans buy — the disagreement is shown, not averaged away.

03 · Final QA

The moderator’s first draft leans “build”. Final QA flags that it never costed the engineering time against the roadmap it would displace — and holds the verdict until that trade-off is on the page.

04 · Verdict

Buy now, revisit at scale — with the break-even volume named, the single assumption that would flip the call, and a “verify before you rely on this” list. A decision you can defend, not a confident guess.

What Decidi reviews

Anything where being wrong is expensive — before you commit to it.

Contracts & agreements
Pitch decks & proposals
Websites, apps & UX
Code & architecture
Marketing & landing pages
Emails & important messages
Business & investment decisions
Documents & writing

The part that makes it trustworthy: a proprietary Final QA audit reviews every verdict against known AI failure modes and attaches every flag it finds, in the open — so you act on a result that’s been checked, not just generated. See the Trust Stack →

And when you need the finished file, not just the verdict: “Build it out” takes the design the council agreed on and produces the actual artifact in full — a document, dataset, web page, code or content, a real Word, Excel or PDF file, even an image or a short video. Attach what you’re working from — Word, Excel, PowerPoint, PDF or an image — and it reads it first. The work itself, ready to download, not a description of it. How build-out works →

What makes a deliverable decision-ready?

“Decision-ready” isn’t a slogan — it’s a fixed standard every verdict is held to before it reaches you. A single chatbot hands you a confident paragraph. A Decidi verdict is built to be acted on, and the Final QA checks it against these gates — flagging anything that falls short, in the open:

Leads with the answer and a confidence level — not a survey of considerations.
Grounded in your specifics — the exact numbers, clauses and trade-offs, with the working shown.
Names the load-bearing assumptions — including the one that would change the call.
Surfaces the strongest dissent — where the council disagreed, and why the verdict still stands.
Ranks the risks by severity, each with what to do about it.
Says what NOT to do — the tempting mistakes, called out.
Ends with a “verify before you rely on this” list — every claim, figure and source to confirm.
No fabrication — never an invented citation, statute, number or source; unknowns are flagged, not guessed.

And if a decision genuinely can’t be made responsibly yet — a critical input is missing, or the stakes need a qualified professional — the council says so plainly instead of faking certainty. That refusal is part of the standard too.

Common questions

What is Decidi?

Decidi is a multi-model AI review and decision workspace for professionals. It uses several AI models and expert personas to review, challenge, improve and stress-test important work before it is sent, published, pitched, shipped, filed, signed or committed.

How does Decidi work?

You give Decidi your work and convene a council of expert personas, each running on a different frontier model. They debate it across rounds, an impartial moderator synthesises a verdict, and a proprietary Final QA audit reviews that verdict for hallucinations and weak reasoning before it is finalised — then hands you a downloadable deliverable.

Why use multiple AI models instead of one?

A single model inherits its own blind spots and biases, tends to agree with your framing, and cannot reliably catch its own mistakes. Running several independent models that challenge each other surfaces disagreement and error that one model alone would miss.

What happens when the AI models disagree?

Disagreement is the point. Decidi shows you exactly where the models diverge, then the moderator weighs the arguments and gives a reasoned verdict — and the Final QA audit flags anything still unresolved for your sign-off, rather than papering over it.

What makes a Decidi deliverable “decision-ready”?

Every verdict is held to a fixed standard before the Final QA signs it off: it leads with the answer and a confidence level, grounds each conclusion in your specifics with the working shown, names the load-bearing assumptions, surfaces the strongest dissent, ranks the risks by severity, says what not to do, and ends with a “verify before you rely on this” list. It never fabricates a citation, statute or number — unknowns are flagged, not guessed. And if a decision genuinely cannot be made responsibly without more input or a professional, the council says so rather than faking certainty.

Can Decidi produce the finished file, not just feedback?

Yes. “Build it out” takes the design the council agreed on and produces the actual finished artifact — every item in full, ready to download. That can be a document, dataset, web page, code or content; a real Word (.docx), Excel (.xlsx) or PDF file; or even an image or a short video. You can also attach what you’re working from — Word, Excel, PowerPoint, PDF or an image — and it reads it first. You get the work, not a description of it.

Is Decidi a replacement for professional advice?

No. Decidi makes AI output trustworthy enough to act on and catches problems before you ship, but it is not legal, financial or other regulated professional advice. For decisions that genuinely require a licensed professional, it tells you so.

Put your work to a council

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