The Economic World Simulation Engine.

We can simulate any business decision you need to make and 10x your Customer Interview and UX Testing output at a fraction of the cost.

Three products, one platform.

Interview real customers, test any experience, and simulate any decision, with real humans, digital twins, or synthetic personas.

Customers

8% may churn

Your decision

Price +10%

Revenue +6% · 64% likely

Competitor

Matches price · 62%

Digital twins

Power users stay

Investors

Margin +4 pts

Press

Backlash story · 34%

Regulator

No action · 91%

Partners

Ask for discounts

Customers

8% may churn

Your decision

Price +10%

Revenue +6% · 64% likely

Competitor

Matches price · 62%

Press

Backlash story · 34%

Regulator

No action · 91%

Partners

Ask for discounts

World Simulation Engine

Simulate any decision before you make it. Run your digital twins, synthetic personas, and world entities through any business scenario, event, or decision, and see how they act across multiple paths, with estimated probabilities, over any time horizon.

AI-Led Customer Interviews

Our AI runs end-to-end customer interviews that adapt in real time. It asks dynamic follow-ups and synthesizes the insights, with no moderator bottleneck and no scheduling. Recruit from 30M+ verified people in 130+ countries, or bring your own customers.

An office with people working

AI-Led UX Testing

Define a task, then drop in a URL, prototype, Figma design, or A/B test. Real users or synthetic personas navigate it and narrate their thoughts, so you get insights in minutes.

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Add an image, video, or connect content

Northwind

Pricing

Log in

Choose your plan

Start your 14-day free trial

Work email

you@company.com

maya@northwind.co

Continue

Starter

$19/mo

Up to 3 seats

Pro

$49/mo

Unlimited seats + SSO

3 AI testers running

Friction: billing unclear

First-time user

Power user

Skeptic

Free trial, but do I need a card first?

Need SSO, so Pro. Is $49 per seat?

Am I charged today or after the 14 days?

app.northwind.co
Add an image, video, or connect content

Northwind

Pricing

Log in

Choose your plan

Start your 14-day free trial

Work email

you@company.com

maya@northwind.co

Continue

Starter

$19/mo

Up to 3 seats

Pro

$49/mo

Unlimited seats + SSO

3 AI testers running

Friction: billing unclear

First-time user

Power user

Skeptic

Free trial, but do I need a card first?

Need SSO, so Pro. Is $49 per seat?

Am I charged today or after the 14 days?

An office with people working

AI-Led UX Testing

Define a task, then drop in a URL, prototype, Figma design, or A/B test. Real users or synthetic personas navigate it and narrate their thoughts, so you get insights in minutes.

app.northwind.co
Add an image, video, or connect content

Northwind

Pricing

Log in

Choose your plan

Start your 14-day free trial

Work email

you@company.com

maya@northwind.co

Continue

Starter

$19/mo

Up to 3 seats

Pro

$49/mo

Unlimited seats + SSO

3 AI testers running

Friction: billing unclear

First-time user

Power user

Skeptic

Free trial, but do I need a card first?

Need SSO, so Pro. Is $49 per seat?

Am I charged today or after the 14 days?

Digital Twins & Synthetic Personas

Digital Twins & Synthetic Personas

One interview turns a real customer into a digital twin you own, with 70–85% behavioral fidelity. Or describe any audience and get synthetic personas instantly. Interview them, test with them, or drop them into a simulation.

One interview turns a real customer into a digital twin you own, with 70–85% behavioral fidelity. Or describe any audience and get synthetic personas instantly. Interview them, test with them, or drop them into a simulation.

Seda · Audiences

SYNTHETIC PERSONAS

DIGITAL TWIN

Describe any audience…

IT buyers at 500+ person firms

3 personas · generated instantly

PS

Priya S.

IT Director · 1,200 staff

Security first

Needs SSO

DK

Dan K.

Procurement · 800 staff

Price-sensitive

3-yr deals

AM

Alicia M.

CIO · 4,000 staff

Consolidating vendors

MC

Maya Chen

Ops Manager · Northwind

Built from 1 interview

82% fidelity

Would you switch tools to get SSO?

Only if migration takes under a week. Our last switch took a month and the team pushed back.

Answered from Maya’s interview

Seda · Audiences

SYNTHETIC PERSONAS

DIGITAL TWIN

Describe any audience…

IT buyers at 500+ person firms

3 personas · generated instantly

PS

Priya S.

IT Director · 1,200 staff

Security first

Needs SSO

DK

Dan K.

Procurement · 800 staff

Price-sensitive

3-yr deals

AM

Alicia M.

CIO · 4,000 staff

Consolidating vendors

MC

Maya Chen

Ops Manager · Northwind

Built from 1 interview

82% fidelity

Would you switch tools to get SSO?

Only if migration takes under a week. Our last switch took a month and the team pushed back.

Answered from Maya’s interview

Seda · Audiences

SYNTHETIC PERSONAS

DIGITAL TWIN

Describe any audience…

IT buyers at 500+ person firms

3 personas · generated instantly

PS

Priya S.

IT Director · 1,200 staff

Security first

Needs SSO

DK

Dan K.

Procurement · 800 staff

Price-sensitive

3-yr deals

AM

Alicia M.

CIO · 4,000 staff

Consolidating vendors

MC

Maya Chen

Ops Manager · Northwind

Built from 1 interview

82% fidelity

Would you switch tools to get SSO?

Only if migration takes under a week. Our last switch took a month and the team pushed back.

Answered from Maya’s interview

What our customers have simulated.

If it’s a decision, you can run it first. A few of the scenarios teams have put through the World Simulation Engine:

Product launches

New brand campaigns

Political campaigns

Competitor brand launches

M&A transactions

Price changes

Churn models

Recessions

Customers, 7 years out

…and more

Get results in three steps

Get results in three steps

01

01

Define your study

Define your study

Define your study

Set your research objectives, draft questions, define a UX task or simulation scenario, upload stimuli, or build it together with Seda.

Set your research objectives, draft questions, define a UX task or simulation scenario, upload stimuli, or build it together with Seda.

Set your research objectives, draft questions, define a UX task or simulation scenario, upload stimuli, or build it together with Seda.

02

02

02

Choose your audience

Choose your audience

Target real people by age, location, profession, and more, or use your digital twins and synthetic personas.

Target real people by age, location, profession, and more, or use your digital twins and synthetic personas.

03

03

03

Launch and learn

Launch and learn

Launch and learn

Launch your study and watch responses come in from our human panel, your own audience, or simulated agents.

Launch your study and watch responses come in from our human panel, your own audience, or simulated agents.

Launch your study and watch responses come in from our human panel, your own audience, or simulated agents.

Three ways to source respondents.

Three ways to source respondents.

Your audience, our AI.

Share a link with your customers, employees, or prospects, and our AI interviews them at scale.

Your audience, our AI.

Share a link with your customers, employees, or prospects, and our AI interviews them at scale.

Our panel, your questions.

Reach 30M+ verified humans in 130+ countries by role, industry, demographics, or behavior.

Our panel, your questions.

Reach 30M+ verified humans in 130+ countries by role, industry, demographics, or behavior.

Pure simulation.

Run interviews and UX tests on digital twins (70–85% fidelity) and synthetic personas (~70%), even for segments too costly, sensitive, or hard to reach.

Pure simulation.

Run interviews and UX tests on digital twins (70–85% fidelity) and synthetic personas (~70%), even for segments too costly, sensitive, or hard to reach.

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Man smiling in an office
Young woman smiling in an office

Reach out to us!

Responses usually take 48 hours.

GET STARTED

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Simulate your next decision first.

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CONTACT US

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Got questions? Contact us.