const decision = valueMatrix({
assumption: 'activation lift',
falsePositive: 42,
falseNegative: 180,
});
decision.shouldShip();
Everything helps you build it.
Nothing says if you should.
Thoughtstead is the one that tells you. It holds the brief, the evidence, the concept and the system behind it. Then it puts a number on what it costs to be wrong.
$19.99/month
Hosted subscription
One instance
The whole system
Nobody has this job title.
Your week
In Thoughtstead
Nobody knows what a false alarm costs
The Value Matrix prices it against a human baseline
Six weeks later, nobody remembers why
Every decision keeps the meeting it came from
What users see and what’s built stop matching
One record holds both, moment tied to component
You’re the bottleneck on everything that goes out
An agent writes it and waits for your approval
The warranty runs out the week you ship
Home gets a context of its own
Put a number on the part everyone is guessing.
Four outcomes
True positives, false positives, false negatives, and true negatives stay visible as separate consequences.
Impossible means impossible
When the counts cannot coexist, the matrix refuses them and names the numbers in conflict.
The break-even point
The result names the exact assumption that would reverse the decision, so someone can challenge it.
A human baseline
The system is measured against what people do today, not against an imaginary perfect model.
One operating system. Separate worlds.
Product, company, and household run on the same foundation. Each context is isolated, so search and agents never cross the wall between them.
AI feature / active build
Support intelligence
Customer call
The cost of a false alarm changed.
Decision
Human baseline stays in the evaluation.
Concept
Approval enters the fourth moment.
No tiers. No trial. No hostage data.
No set team pricing survives contact with your system. Contact us.
Individual
Launching soon
$19.99/month
or $199.99/year — save 17%
- Every surfaceThe studio, and the rest of it
- AI includedNo API key to manage, no per-token bill
- Every contextAs many as the things you run
- GuestsComment on a concept without a seat
- ExportEverything, one click, any time
The useful doubts.
01Why not keep this work in Figma, Linear and Notion?+
Because each one holds a part, while the decision depends on the whole. Thoughtstead connects the concept, the system behind it, the evidence and the cost of being wrong.
02What makes the components “typed”?+
Thoughtstead has more than twenty component kinds, but only Model, Prediction and Agent carry the twelve-question contract. They are the three that make a call you may have to defend.
03Why call it a life operating system?+
Product work is one context, not the whole of your life. Thoughtstead gives each thing you run its own isolated context, while keeping one system for capture, search and agents underneath.
04Can I leave?+
Yes. There is one plan, no trial, and full export at any time. Your data is not the price of leaving.

