Osmosia website redesign
Osmosia is an AI assistant that answers car dealers' leads on leboncoin and La Centrale in under 15 minutes. The site makes this technical product clear and drives demo bookings.

“A clear website, optimized for search, and full control over our content. The result is beyond my expectations.”
Before / After


Context
An AI product is hard to explain fast. Car dealers are not technical buyers. The value had to land in one read, a young product had to feel trustworthy, and a visit had to turn into a booked demo. In French and English.
- An AI product that is hard to explain in one read.
- Car dealers who are not technical buyers.
- A young product that had to earn trust on the first visit.
Results
A bilingual marketing site built around one simple promise: answer leads in under 15 minutes. The structure goes straight to the benefit, demo booking takes one click, and the design gives an AI startup a serious face. We built an interactive demo that simulates a real conversation with the assistant, so visitors quickly grasp what the product does.
- The promise fits in one line: answer leads in under 15 minutes.
- An interactive demo that simulates a real conversation with the assistant.
- Demo booking takes one click, in French and English.
- The team updates its content itself, from the Claude app.
Deliverables
- Custom website design
- Interactive demo
- Bilingual FR / EN build
- Update content with claude chat
Visual identity
What struck me about Mathieu is his professionalism and his responsiveness. He supported us at every step and adjusted as our feedback came in, with real flexibility. Rather than a generic demo, he showed real creativity: a fully custom demo that mirrors how we talk with buyers. And instead of a CMS, he gave us access to the code. We update the content ourselves, straight from the Claude app. A real time-saver, and I’m grateful he trained us on the method. A clear website, optimized for search, and full control over our content. The result is beyond my expectations.
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