About us
Twelve years of product data expertise,
rebuilt with AI agents
Opsylen is a French software company. Its product, KaraK, processes product data at scale — sourced, enriched, matched and proven. The platform is built on a conviction shaped by years in the field: at this scale, data without evidence is worthless.
Founder
Pierre Marceau
Pierre spent twelve years as Chief Operating Officer at Workit, the French software company that became a global leader in price intelligence — monitoring hundreds of retailers and brands and comparing millions of products every day — until its acquisition by US-based Wiser Solutions. Twelve years building the sector's production tools: large-scale data collection, catalogue matching and data quality control.
“Twelve years building world-class product data management tools. Today, I have rebuilt that expertise on the most advanced AI technologies.”
KaraK grew out of a simple observation: work that once required entire data collection and entry teams can now be done by AI agents — better, faster and, above all, with evidence. Provided that one rule learned over those twelve years is never compromised: every value must be verifiable.
French software company
Based in the Gard region, with a platform hosted in France — data is processed exclusively in Europe, from ingestion to delivery.
In production
KaraK runs for major B2B distribution companies, on catalogues containing hundreds of thousands of products — see our case studies.
Custom workflows
Beyond KaraK, the same team builds custom data-processing workflows — see how.
Evidence first
Every value is linked to its source or marked as inferred — no unverifiable figures, either in the product or in our communications.
Humans decide
AI proposes and executes; human oversight validates. Ambiguous cases are resolved, not averaged away.
Domain expertise before demos
Taxonomies, standards and product references — KaraK speaks the language of distribution, not presentation decks.
Let’s talk about your data
A sample of your catalogue is enough to show you what KaraK can do with it — complete with sources, with no commitment.