I spent 5 years in B2B growth - first as Growth Marketer at Bluesquare in Paris, helping startups and enterprises build digital products, then as an independent growth consultant working with B2B companies on RevOps, CRM (HubSpot, Pipedrive, Salesforce), marketing automation, and lead generation.
The pattern was always the same: the founders who validated hard and early survived. The ones who skipped it built beautiful products for markets that didn't exist. I watched too many founders burn months on ideas nobody wanted.
According to CB Insights, 42% of startups fail because there's no market need. That's the blind spot I built Preuve AI to catch - the tool I wish existed when I was advising startups on go-to-market.
Preuve AI is an agentic RAG pipeline - not a ChatGPT wrapper. Autonomous AI agents search the live web in parallel, retrieving real data from 60+ sources. Every claim links back to where it was found. I've analyzed 7,000+ startup ideas across 13 industries since launch. Only 17.5% earned a go verdict at 70 or above, the threshold I consider launch-ready.
7,000+
ideas analyzed
116
articles published
60+
live data sources
Background
Founder
Preuve AI
Built an agentic RAG pipeline for startup validation. 7,000+ ideas analyzed across 13 industries, 60+ live data sources.
Growth Marketing Consultant
Freelance - Paris
Advised B2B companies on growth strategy and execution: RevOps, CRM implementation, marketing automation, outbound campaigns, and lead generation.
Growth Marketer
Bluesquare - Paris
Built the growth engine for a digital product studio helping startups, mid-market, and enterprise clients. AARRR funnel optimization, marketing automation, B2B outbound, and cross-channel analytics.
Expertise
All articles (116)
The Evidence Gate Framework: 5 Gates to Validate Any Business Idea
How to Find Startup Ideas That Are Actually Worth Building
How Accelerators Evaluate Startups (and Why It Is Not What You Studied For)
8 Underrated Website Startup Ideas for 2026 (With Proof)
Is My Startup Idea Validated? Score the Evidence You Have
Trending Startup Ideas 2026: 10 Rated Durable or Fad
Best MCP Servers for Research (2026): 8 Ranked for Market Analysis
Best AI App Builders (2026): Honest Picks, Sourced Complaints
Lovable vs Replit (2026): The Honest Comparison
Lovable Review (2026): Great Builder, One Blind Spot
How to Show Investors Your Idea Is Validated
BigIdeasDB Review: What $99 Actually Buys You
Are AI Generated Startup Ideas Any Good?
Free Business Model Canvas Generator: Fill Each Block With Real Answers
How to Test Product-Market Fit Before Building Anything
Best Business Idea Validators: 7 Tested, One Question
Best Competitor Analysis Tools for Startups (2026): 10 Tested by Stage
Market Research Agency vs AI Tools: When Each One Wins
The Real Cost of Validating a Startup Idea
Is Preuve AI Worth It? My Honest Answer
How Much Does Market Research Cost?
AI Market Research for Consultants: Why ChatGPT Is Not Enough
Grounded Startup Ideas for 2026: 9 You Can Build Alone
Emerging AI Startup Ideas for 2026: 8 Niches Still Open
Billion-Dollar Startup Ideas (And Why Most Won't Be)
Startup Failure Statistics 2026: Every Number, Sourced
What Is a Saturated Market?
Is My App Idea Already Taken?
B2B Startup Ideas for 2026: Where the Budget Already Sits
Profitable Startup Ideas for 2026, Ranked by Real Demand
Devtools Startup Ideas for 2026: 9 Gaps Worth Building
Startups That Failed and Came Back
Are Micro-SaaS Ideas Still Profitable in 2026?
Are AI Wrapper Startups Worth Building in 2026?
Is My SaaS Idea Already Taken?
Undersaturated Startup Ideas for 2026: 10 Niches Still Open
Is Preuve AI Legit? An Honest Founder Answer
How to Screen Client Startup Ideas Before Recommending They Build
10 Creator Economy Startup Ideas for 2026
10 Vertical AI Startup Ideas for 2026
10 B2B SaaS Startup Ideas for 2026
Is the AI Market Saturated in 2026?
How to Use ChatGPT to Validate a Startup Idea
Does Startup Validation Actually Work?
The 12 Most Overdone Startup Ideas in 2026
Zombie Startup Ideas: 8 Concepts That Keep Failing
12 Failed Startup Ideas and the One Signal Each One Missed
Is Your Startup Ready for Pre-Seed Funding?
Market Research for First-Time Founders
How to Know if Your Startup Idea Already Exists
7 Free Idea Validation Tools for 2026
AI SaaS Startups in 2026: Ideas & Validation
Micro SaaS Ideas for 2026: 10 One-Person Bets, Scored
How to Write a Value Proposition
How to Create a Buyer Persona (5 Rings + Free Generator)
How to Validate a Business Idea Before You Spend a Dollar
Best AI Tools for Startups 2026: 9 Jobs, My Pick for Each
15 Dead Startup Ideas Worth Reviving in 2026 (and Why They Failed the First Time)
13 App Startup Ideas for 2026 (Validated, Not Hyped)
13 SaaS Startup Ideas for 2026 (Not Another AI Wrapper)
13 Healthcare Startup Ideas for 2026
13 Fintech Startup Ideas for 2026
Ship or Die Review: Smart Bet or $299 Gamble?
Polsia Review (2026): Is It Legit? An Honest Founder Read
AI Agent Startup Ideas 2026: 27 Ranked, 15 Worth Building
The Founder's Product Launch Checklist (Post-Validation)
The Fake Door Test: A Validation Signal That Beats Waitlists
How to Start a Business Plan: A Founder's Step-by-Step Guide
AI Memory Systems Statistics You Need to Know in 2026 (60+ Sourced Stats)
What Is Pre-Seed Funding, and When Should Founders Raise It?
Go-to-Market Strategy for Startups
Product-Market Fit Survey: How to Measure PMF
Startup Business Plan: How to Write One, Step by Step
AI Coding Models Statistics You Need to Know in 2026 (60+ Sourced Stats)
Customer Discovery Interviews: 15 Questions and How to Run Them
Best Market Research Tools 2026: Tested by Job for Founders
Market Research for Startups: A Founder Guide
AI Business Context Validation: How It Works (and When It Doesn't)
Market Validation for Startups: A 5-Step Framework
I Read 4,000 Pitch Decks: Here's What Gets Funded in 2026
Startup Validation Benchmarks 2026: What 6,000+ Startup Ideas Reveal
How to Validate a Product Idea Before You Build
The AI Wrapper Debate Is Over. Agent-Washing Is the New Problem.
Preuve AI vs IdeaBuddy: Validation vs Business Planning
Confirmation Bias in Startup Validation (5 Traps)
Why Startups Really Fail in 2026 (Not What CB Insights Said)
AI Startup Ideas 2026: 50 Ranked, 11 Worth Building
How to Validate a Business Idea Before You Build
How AI Actually Validates a Startup Idea (10-Agent Test)
Preuve AI vs IdeaKiller: Quick Verdict or Real Validation?
Preuve AI vs VenturusAI: Frameworks vs Market Evidence
Preuve AI vs ValidateIdea: Fast Report or Real Validation?
Best Startup Idea Validator Alternatives (and How to Pick One)
Preuve AI Review (2026): Real Feedback, Pricing, Pros and Cons
Preuve AI for Teams Review (2026): Agency Lead Qualification Tool
How to Pre-Qualify Startup Leads Before a Discovery Call
White Label Audit Tool for Business Validation 2026
How to Find Competitors for Your Startup - Free Research Methods
1,000 Entrepreneurs Tested Their Ideas. Here's What Kills Most.
Preuve AI vs DimeADozen: Real Data vs 40 Pages of AI Text
Preuve AI vs ChatGPT: Can AI Validate Your Startup Idea?
Best AI Startup Idea Validation Tools (2026): 9 Tested and Ranked
How to Research Your Pitch Deck (Data Investors Actually Want)
IdeaProof vs Preuve AI: 5 Sources vs 60+ (Tested 2026)
Preuve AI vs ValidatorAI: Chatbot vs Research Tool
Competitor Analysis for Startups: A Practical Competitive Intelligence Guide
TAM SAM SOM: How to Calculate Your Market Size
Is My Startup Idea Good? How to Know in 60 Seconds
How to Validate a SaaS Idea Before You Build (7 Steps)
The MRR You Think vs The MRR You'll Get
Stop Wasting Discovery Calls on Bad Startup Ideas
What to Do When Your Idea Gets a Low Validation Score
What VCs Actually Want in Your Market Slide (2026)
How to Calculate TAM SAM SOM (Without Making Up the Numbers)
Before You Vibecode: How to Know If Your Idea Is Worth Building (2026)
How to Validate a Startup Idea Without Building Anything