Generative AI reached a decisive milestone in 2025. Companies that adopted it strategically report productivity gains of 20-40% on targeted processes. But behind these numbers lie far more nuanced realities.
The adoption paradox: between enthusiasm and maturity
According to our latest survey of 150 French companies, 78% launched at least one generative AI project in 2025. Yet only 23% consider these initiatives truly productive. The gap is explained by a deficit of methodology, not technology.
The most common mistakes we observe: starting with technology instead of the business use case, underestimating data preparation efforts, and neglecting change management with teams.
5 use cases that deliver measurable ROI
1. Document automation: generation and synthesis of regulatory documents, contracts, reports. Average gain: 60% time on writing tasks. 2. Augmented customer support: conversational assistants powered by internal knowledge bases. 35% reduction in resolution time. 3. Code assistance and technical review: 25-40% acceleration in software development. 4. Unstructured data analysis: extracting insights from customer feedback, emails, tickets. 5. Personalization at scale: marketing campaigns and communications tailored to each segment.
Our methodology
At ACCENSEO, we've structured a 4-phase approach: Strategic framing (identifying priority use cases), Proof of Concept (validation on a limited scope in 6 weeks), Industrialization (scaling with appropriate guardrails), and Continuous optimization (performance monitoring and model tuning).
“Generative AI is not an IT project, it's a transformation project. The CIOs who understand this are the ones who deliver value.”
— Jose DA COSTA
In 2026, the leaders will be companies that successfully moved from experimentation to industrialization, with solid foundations in data governance and change management.
AIStrategyLLMDigital Transformation
About the author
JDC
Jose DA COSTA
President & CTO, ACCENSEO
Software engineer with over 15 years of experience in IT consulting and custom development. Jose leads ACCENSEO with a clear vision: making technological innovation accessible to businesses of all sizes.
