Sesame Summit 2026 – application open

Yann Lechelle

Recorded live in Paris during France Digital Day (FDDay), this engaging conversation featuring Yann Lechelle, co-founding CEO of Probabl, is full of insights about the European tech landscape, its challenges, and Yann’s ambitious mission to change the game with Probabl.

The Birth of Probabl: FDDay Unveiling

FDDay served as the grand stage for Yann to unveil his brainchild, Probabl, along with a number of undisclosed cofounders. As co-founding CEO, he’s embarking on a journey to tackle the daunting challenge of machine learning at scale. But what sets Probabl apart is its commitment to open-source solutions. It’s not just about building AI; it’s about making it available to everyone, regardless of their size or resources. Yann kicked off the conversation by unveiling his ambitious mission with Probabl. His goal? To make AI accessible to all, leveling the playing field for entities of all sizes. It’s a mission baked right into the company’s bylaws, emphasizing the need for democratization and transformative change in the world of technology.

The origin story of Probabl is quite fascinating. Yann’s brainchild emerged as a response to a government-backed initiative aimed at promoting open-source assets for AI in France. The company’s mission is explicitly tied to fostering technological sovereignty within Europe, a concept he unpacks further in the podcast.

When it comes to funding, Probabl has kept its cards close to its chest. Yann mentions that it’s a work in progress. What’s intriguing, though, is that Probabl is a private-public initiative, emphasizing its mission rather than just the funding. The focus is on achieving the mission, regardless of the financials.

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Photo by Igor Omilaev / Unsplash

The Urgency of Tech Sovereignty

When the topic of the European tech landscape today, compared to that of Silicon Valley in the U.S, comes up, Yann doesn’t mince words. He asserts that Europe is too liberal for its own good, highlighting the lack of protectionism in the region. In an age of global tech conflicts and the rise of AI, he argues that Europe must reduce its dependence on foreign technologies and promote its strategic interests.

As Yann Lechelle rightly points out, Europe has a rich pool of talent, but it’s time to harness that potential and pave the way for strategic independence. The world is becoming increasingly complex, and Europe must position itself as a formidable player in the global tech arena. Probabl’s mission to provide open-source solutions is a step towards ensuring that Europe’s values and interests remain at the forefront of technological innovation. It’s not just about catching up; it’s about leading the way.

Colorful code
Photo by Markus Spiske / Unsplash

Open Source vs. Open Weights

Yann sheds light on a critical distinction between open source and what he dubs “open weights.” He calls out the common practice of companies sharing model weight data while keeping the actual code proprietary. True open source, he argues, entails not just open weights but open access to the entire model’s source code.

Europe’s tech scene may have lagged behind its American counterpart, but with initiatives like Probabl and the Joint European Disruption Initiative (JEDI) that Yann is a part of, there’s hope for change on the horizon.

Yann’s vision of technological sovereignty, open-source AI, and a level playing field for all is a rallying cry for the European tech ecosystem. The challenges are enormous but it’s clear that Yann’s determined to address them head-on. Europe, it’s time to rise to the occasion, and Probabl might just be the catalyst we’ve been waiting for.

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Picture this. A strategy director at a major exhibition calls with six weeks to go before the show. The brand new startup area has sold exactly one booth. The show runs on a multi-year cycle, so a failed launch means the whole concept probably gets cancelled before it gets a second chance. This is a composite of several conversations I’ve had this year, and the pattern is always the same. The organizer builds a startup area, assigns it to the existing sales team, waits, panics, then calls for help when the calendar has already decided the outcome. The diagnosis is simple: startup acquisition is a different business than exhibitor sales. Most organizers discover this too late. Here are the five reasons why. 1. They sell square meters to companies that buy outcomes A corporate exhibitor renews a booth the way it renews an insurance policy. There’s a budget line, a history, a floor plan discussion. The sales conversation is about location and dimensions. Startups have none of that. They buy pipeline, investor meetings, and proof that the show is worth their time. And their time is expensive: my rule of thumb is two full prep days for every event day, more if the team is small or the show is far. A founder deciding between your startup area and a customer roadshow is running an ROI calculation, and a rate card doesn’t answer it. A sales team trained on renewals and floor plans doesn’t speak this language. It’s nobody’s fault. It’s a different job. 2. They start the clock six months too late Startup areas usually get scoped after the main floor is sold. The launch lands a few months, sometimes a few weeks, before the show. Founders don’t work like that. They lock their event strategy two or three quarters ahead, because attending well requires prep: outreach, meeting scheduling, demo logistics, travel. A six-week sprint is competing against decisions that were made in the spring. The paradox is that organizers know this about their corporate exhibitors, who book 12 to 18 months out. Somehow the assumption becomes that startups, the most resource-constrained companies on the floor, can be converted on short notice. 3. They design the offer around what they can administer Here’s a real example, anonymized. One show’s main startup offer was a 60 percent discount, funded by a national grant. Great deal. One catch: only domestic startups qualified for it, at an international show. The offer wasn’t designed around the buyer. It was designed around available paperwork. The addressable pool shrank to a fraction of the relevant ecosystem, and everyone else got a full-price booth with no story attached. Startup offers that work are built the other way around: define which companies belong on that floor, then engineer the package (price, format, visibility, matchmaking) that makes their decision easy. Administration comes second. 4. They confuse margin kept with money made This one stings, because I’ve watched it happen twice this year. An organizer works with a partner on startup acquisition, hits targets, then decides to insource the next edition to keep the full margin. On a spreadsheet, it’s savings. In reality, the target gets missed, the area sits half-empty, and the organizer comes back mid-campaign asking for rescue. Some results are still possible at that point. The results a proper campaign would have delivered are gone. The full cost of insourcing shows up later: lost booth revenue, a weaker visitor experience in that zone, and a startup program that gets cancelled for “lack of demand.” Against that, the partner commission was the cheapest line on the P&L. 5. They run a program where they need a pipeline Startup acquisition compounds. Alumni come back. Competition applicants become exhibitors. Founders talk to each other, and a good experience at one edition sells the next one. None of that happens inside a one-off project. It requires a multi-year cadence: scouting, competitions, curated programs, follow-up between editions. Shows on two or four year cycles feel this the hardest, because a standalone approach means restarting from zero every single time, with a new team and no institutional memory. What compounding looks like JEC World, the composites industry show in Paris, is the counter-example, and yes, they’re our client, which is exactly the point. The startup work there is a bundle, built over multiple editions: a startup competition that lowers the barrier for first-time startup exhibitors, an Investor Day that brings capital to the floor and gives founders a concrete ROI reason to attend, and a startup village that gives them a curated home inside a very large show. Each piece feeds the others. Startups apply because clients & investors are there. Investors come because the startups are curated. And the ones that grow don’t disappear: they graduate into regular exhibitors. That’s the part most organizers miss. A startup exhibitor is just a first-time exhibitor. Treated well, they’re the cheapest exhibitor acquisition channel you’ll ever have. Treated as filler for a leftover corner of the floor plan, they don’t come back, and neither do the ones watching. The question for organizers If you run a show with a startup area, ask yourself one thing: is it a strategy or a floor plan decision? If the honest answer is the second one, here’s my prediction. The area launches late, gets staffed by a team hired to sell something else, underperforms, and quietly disappears from the next edition. The internal conclusion will be “startups don’t work for our show.” The real conclusion is that the approach didn’t. Startups work fine. They’re just customers who need to be sold to like startups. Disclosure: Sesamers sells startup acquisition and curation services to event organizers. JEC World is a client. Read accordingly.

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