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Swarm intelligence

Every idea deserves a second opinion. Here are 500.

Tell Yogen what's on your mind — a new product, a price, a call you keep putting off. An oracle swarm debates your thought. You get an answer in 4 minutes.

Free to try, no card needed
How it works

Six steps. One outcome.When you need more than just ChatGPT.

01 — You start
Describe your idea
Type it in plain English. A product concept, a business decision, a career choice, a creative project. No special format required — speak the way you think. Attach docs, pictures or PDFs to support it.
02 — The experts weigh in
The council convenes
All twelve named experts join the session automatically. Investor, sceptic, customer, regulator, competitor, media — every angle represented before a word is said.
03 — The crowd reacts
The crowd weighs in
Beyond the experts, hundreds of simulated individuals respond from their own lived contexts. Demographics, biases, concerns, enthusiasm — the full human spectrum.
04 — Real friction
Real debate, not consensus
The agents don't agree. They push back, challenge assumptions, and surface the objections a real room would raise. Honest friction is the product.
05 — You get a clear read
A structured, actionable report
You receive a clear written report — what the council agreed on, where they clashed, what the crowd revealed, and what it means for your next decision.
06 — The starting point
What you do next is yours
The simulation is a stress-test, not a verdict. Use it to sharpen your thinking, anticipate the room, and go in with your eyes open. A great place to start.
Who shows up · The council archetypes

The room assembles
around your question.

Every simulation generates a fresh council calibrated to your specific idea.

Investor
Investor
Is this fundable? What's the exit? Where does the money go wrong?
Sceptic
Sceptic
Why will this fail? What's been tried before? Who's going to say no?
Customer
Customer
Would I actually pay for this? Does it solve a real problem or a made-up one?
Regulator
Regulator
What's the liability? Who does this harm? What law does this brush against?
Competitor
Competitor
How would I copy this? What would I do to kill it before it scaled?
Early Adopter
Early Adopter
When can I get it? How does this compare to what I already use?
Media
Media
What's the headline? Who's the villain? Why does anyone outside this room care?
Partner
Partner
Can I resell this? Does it fit my clients? What's in it for my business?
Operator
Operator
Can we build it? What breaks first? Where does the team fall apart?
Advocate
Advocate
Who does this help most? How do we make sure it reaches them?
Analyst
Analyst
What do the numbers say? Where's the assumption that kills this?
Founder
Founder
Have I tried this? What would I do differently? What did I miss the first time?
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Use cases

Real decisions.
Real friction.

Career decision
You're about to quit your job
Put the plan in front of someone who'll back you, someone who thinks it's too soon, and someone who's done it and failed. Before you hand in your notice.
"I've been offered a role at a startup. My current salary is £95k. The new offer is £70k plus equity. I have a mortgage and two kids."
Startup idea
You need someone to tell you it won't work
Not looking for validation. Looking for the five things that'll kill it — before you spend six months building it.
"An app that lets independent coffee shops run a loyalty scheme without needing their own tech team."
Pricing
You're raising your prices
Find out which customers leave, which stay, and which never noticed the old price. Before the email goes out.
"We're moving from £49/month to £79/month. We've not raised prices in three years. Our churn is currently 4%."
Pitch prep
You're about to pitch
Hear the objections before the investor does. The sceptic, the competitor, the analyst — all in the room before you walk in.
"I'm pitching a seed round on Thursday. £500k ask, pre-revenue, B2B SaaS in the HR space."
Content & comms
You wrote something polarising
An essay, a policy, a campaign. See where the argument breaks and who it loses — while you can still fix it.
"I'm publishing an open letter arguing that remote work has made junior employees worse at their jobs."
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12
Named experts. Every angle. Every session.
488
Simulated people who react like your real market would.
4min
Average time from idea to full written report.
1
PDF report, emailed with the final result.
How to get more out of it

Improve the answer
by asking a better question.

The simulation is only as sharp as the prompt that triggers it. Three things that make the difference.

Name the decision, not the topic
The room responds to real stakes. Give it a specific choice with a deadline, an audience, and a consequence — not a general theme to explore.
Strong prompt: "Should we cut the free tier entirely, or make it harder to reach — and what do we lose either way?"
Upload real context.
Upload a strategy doc, a product brief, a price list, or a customer email thread. The experts reason against your actual situation — not a generic one.
Try this: "Here's our current onboarding email sequence — where does a new user most likely drop off before seeing value?"
Read it like a stress test
Scan for the friction points, not the validation. Which perspective shifted something? Which conclusion felt uncomfortable? That's where the signal is.
Next move: find the expert who pushed back hardest — then ask why their segment sees it differently.
Q&A

Questions
answered.

Still unsure? Get in touch

Any decision with a market or audience at its centre. Product concepts, pricing changes, campaign angles, market entry, pivots, naming, positioning hypotheses. If someone has to react to it, it can be simulated.

Twelve expert voices generated fresh for your question — investor, sceptic, regulator, competitor, customer, and more. Alongside them, 488 simulated people shift their stance round by round as the debate unfolds. It runs on Claude, Anthropic's AI.

A single AI gives you one consensus-shaped answer. Yogen runs up to 500 agents simultaneously — each with a distinct perspective, each instructed to disagree and stress-test. The value is in the friction.

Under 4 minutes. Watch the debate live — the report appears when the swarm reaches a verdict. If consensus forms early, it ends early. A shorter simulation means the swarm agreed quickly.

No — and that distinction matters. Yogen is a simulation tool, not a consultant. Nothing here constitutes professional, financial, legal, or business advice. It shows you what you might be missing. What you do next is yours.

Yes. Never used to train AI models, never shared with third parties, never visible to other users. See our Privacy Policy.

Yes. Run your original idea, address the objections the swarm raised, then run the refined version. Compare the two reports to see how the verdict shifted. One of the most useful things you can do with Yogen.

Yes. All paid plans are monthly, cancel at end of billing period with no penalty. You keep your reports for as long as your account is active.

3 free simulations
No card, no commitment. Start in seconds.
No card required
Enter your idea, not your details.
Open source
Self-host from GitHub with your own API key.
Beta · Early access

Free while
we're in beta.

3 free simulations, no card, no commitment. Or self-host it — Yogen is open source on GitHub.

Beta
Right now
£0
free during beta
3 simulations included
  • 500-agent swarm
  • 12 named experts
  • Full prediction report
  • PDF emailed to you
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For developers
Self-host,
unlimited

Yogen is open source. Clone the repo, add your own Anthropic API key, and run unlimited simulations on your machine. Free forever.

Get the code on GitHub →

The council is ready.
Are you?

A room full of minds is waiting to talk through your idea.

Run your first simulation free →