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Intelligence that changes what you buy.

Product.ai is the first shopping assistant powered by pre-forged, testable truths about how products actually work. It will tell you the truth a generic AI cannot derive on its own — including when the truth is 'don't buy that.'

See It In Action

Ask Product.ai anything.

Real conversation. Real verdict. Real physics. This is what happens when you ask Product.ai about a product.

Product.ai
Grounded in Truth Graph
I'm thinking about getting the Galaxy S25 Ultra. I'm in Germany. Is it worth it?

Short answer: No - not in Germany.

The Galaxy S25 Ultra is two different phones sold under one name. Samsung allocates processors by region, and Germany receives the Exynos 2500 variant.

Confident No Galaxy S25 Ultra (Exynos - DE)

18% lower sustained GPU performance at identical price. Thermal throttle onset at 5 min vs 8 min (Snapdragon).

What I'd recommend instead:

Confident Yes Pixel 9 Pro

Unified global silicon. Best computational photography at price point. 7-year updates. No regional games. Saves you €450.

Try Product.ai Free →

No account required - Free during founding period

How It Works

Not a chatbot. A verdict engine.

Every verdict is grounded in pre-verified physics — not opinions, not reviews, not marketing claims. When we recommend something, we can show you the engineering. When we reject something, we can show you exactly what fails.

1

You ask

Natural language question about any product or purchase decision across 47 categories.

2

Physics loaded

Your question is matched against thousands of adversarially-reasoned axioms about how products actually work.

3

Pressure-tested

Every claim was stress-tested before you asked. Physics, economics, and engineering constraints — if a claim didn't survive all three, it didn't make it in.

4

Verdict delivered

A committed answer grounded in physics. Buy this, don't buy that, or here's what you need to know first. No hedging. No "it depends on your needs."

Differentiation

What makes this different.

Other AI assistants search the internet and average what they find. Product.ai interrogates a verified knowledge graph and delivers a verdict.

ChatGPT / Gemini
Probabilistic
Averages internet opinions
Can't say "don't buy this"
No transaction data calibration
Trained on marketing copy and SEO content
~ Broad but shallow knowledge
Wirecutter / RTINGS
Editorial
~ Human expert curation
~ Can reject, but advertisers pay for placement
No personalization
Affiliate revenue conflict
~ Deep but narrow coverage
Different
Product.ai
Axiomatic
Verified axiom knowledge graph
The Confident No is built in
No advertiser to serve. No ranking to buy.
When we don't know, we say so.
Deep in 3 categories today. Expanding.
Features

What you get today.

Product.ai is free during the founding period. Features expand weekly based on community feedback.

Axiom-Grounded Verdicts

Every recommendation is grounded in verified engineering constraints and physical reality. The pre-forged product wisdom is visible in every response.

The Confident No

Binary disqualifiers surface immediately. If a product has a fatal flaw, you'll know before you buy. Other AI assistants won't disqualify a product. We will — and we'll tell you exactly what fails.

Situation-Aware

Your question isn't generic, neither is the answer. Ask about running in Boston and you get wet-pavement physics. Ask about a phone for your mom and you get gift-buying psychology. Context shapes the verdict.

Alternative Recommendations

Every rejection comes with a better answer. We don't just tell you what not to buy — we tell you what to buy instead, and why.

Regional Intelligence

Product quality varies by market. Product.ai knows about regional silicon allocation, carrier exclusives, and market-specific pricing.

Confidence Transparency

When our knowledge runs out, we say so. No hallucinated confidence. We go deep in three categories today — smartphones, running shoes, and skincare — and we'll tell you where the edge is.

Early Preview

Available now. Expanding soon.

Product.ai is live on the web in three categories. More categories and surfaces are coming — but we ship what's real, not what's planned.

Stop guessing. Start knowing.

Product.ai is free during the founding period. Ask it what to buy. It will tell you the truth.

No account required · No credit card · 47 categories