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Simulate before you build

Validate your startup idea
before you build it.

Delfy creates simulations with synthetic personas
to reveal objections, adoption triggers, and signals
of traction with visual clarity.

Optimized by trusted references

StripeSupabaseFly.ioOpenAI

From startup thesis to market signal.

Simulate customers, investors, competitors, and operators before you build.

Pre-launch

Avoid building the wrong thing before launch.

Pressure-test your thesis before engineering time turns into sunk cost.

Personas

Let AI audiences evaluate the market signal.

Customers, investors, builders, competitors, and interest groups react from different angles.

Simulation

Turn raw ideas into sharper decisions.

Compare objections, buying triggers, and willingness to pay before you commit.

Metrics

Read the signal behind every score.

See clarity, relevance, differentiation, trust, and market pull in one pass.

From startup thesis to market signal.

Pré-launch
delfy

Avoid building
the wrong thing
before launch.

100 AI personas
evaluating your
startup idea.

Simulate customers, investors,
competitors and more
then see what they evaluate:

One-liner
Landing
Pitch
PRD
Pricing
Personas

Check if your idea

3.12/5.0Mean WTP

Willingness to Pay distribution by bracket

1.0-2.01
2.1-3.071
3.1-4.027

Try Live Demo

How it works

Your meetings are full of insights. Delfy makes sure none are lost.

>5min

Get insights in under 5 minutes

7x

Faster insights before launch

+100

Personas curated with individual criteria

Try it yourself

Airbnb 2008 pitch

Investors passed for 4 recurring reasons: trust, cancellation clarity, regulation, and competition.

Dashboard

Your command center. Every project, simulation, and insight — all in one place.

Dashboard

Clear investment for clearer insights.

Test your narrative before entering the room. Choose a plan that fits your iteration speed.

Monthly
Annually-30%

Pay-as-you-go

Perfect for testing a single idea before a big meeting.

$5/ simulation

What's included

  • 1 simulation credit
  • 100 personas per round
  • Impact score & objections map
  • All artifacts and societies
  • Advanced analysis
  • AI recommendations
Most Popular

Founder

For active builders iterating weekly on their narrative.

$25/ month

What's included

  • 15 rounds / month
  • Advanced Analysis
  • AI analysis
  • All Societies and Artifacts