Pre-launch
Run your idea through 100+ personas and get unique perspectives.Run your idea through 100+ personas.
See how different audiences challenge, validate, and reshape your concept before launch.
Get startedSimulate 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.
Delfy metrics
Launched in
K+
Personas Generated
+
Founders
+
Ideas Presented
Pré-launch
delfy
Run it through
100+ personas
for unique perspectives.
Investor
x"Early-stage investor evaluating dozens of founder pitches and wanting a standardized validation snapshot for each idea."
4.5Clarity
4.5Relevance
3.5WTP (Pay)
Hi, I'm Founder. I just evaluated your artifact and scored it across five dimensions. Ask me anything about my reasoning, my objections, or what would change my mind.
What do you think about my startup idea?
I think the core pain is real: early founders burn time and money on weak validation, and "fast signal before building" is a strong wedge. On the evaluation here, I'd give it about a 4/5 for clarity, relevance, differentiation, and trust, but only 3/5 on willingness to pay. The one-liner is energetic, but it overpromises and feels too broad; I'd want it framed as reducing false positives and false confidence.
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.
1. Describe your startup idea
Try it yourself
Airbnb 2008 pitch
Investors passed for 4 recurring reasons: trust, cancellation clarity, regulation, and competition.
FAQ
Questions before you simulate.
What can I validate with Delfy?
You can test startup theses, landing page messaging, PRDs, pitch decks, pricing, and one-liners before spending weeks building or pitching.
Who are the AI personas?
Delfy simulates customers, investors, operators, competitors, and other relevant audiences so you can compare reactions from multiple market angles.
How quickly do I get results?
Most simulations return structured scores, objections, buying triggers, and strategic recommendations in minutes.
Can I compare different versions of an idea?
Yes. You can run variations of the same thesis, message, or artifact and compare where the market signal gets stronger or weaker.
Do I need existing customer research?
No. Delfy works from the artifact or idea you provide, but existing notes, interviews, or positioning context can make the simulation sharper.
Founder notes.
Get Pitch Deck Feedback Before Your Next Investor Meeting
The 5 narrative failure modes that kill pitch decks, a 30-minute cold-read audit, and a framework for getting structured feedback before your investor meeting.
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Test Your Landing Page Messaging Before Launch
The 5 above-the-fold messaging mistakes that kill conversion, a 20-minute cold-traffic audit, and a framework for testing your landing page with simulated visitors before launch day.
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Validate Your PRD Before Committing Engineering Time
The 5 failure modes that turn PRDs into wasted sprints, a 25-minute pre-sprint clarity audit, and a framework for testing requirements with simulated builders before committing resources.
8 min read
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