06-05-2026

La Banque Postale, a subsidiary of the La Poste group, and Mistral AI, a leading player in generative artificial intelligence in Europe, announce the signing of a large-scale strategic partnership to deploy AI within the bank in order to combine economic performance and the issue of sovereignty.

This three-year partnership aims to deploy Mistral AI's language models on La Banque Postale's servers and data centers, within a sovereign and secure environment, to benefit employees, business units, and customers. It also includes the integration of a dedicated Mistral AI team within the bank's development teams. This partnership aligns with the Caisse des Dépôts Group's Digital Horizon 2030 plan, which promotes digital sovereignty.

After a first phase of experimentation carried out for a year which proved conclusive, this alliance between La Banque Postale and Mistral AI marks a structuring step in the AI strategy of the banking group, a subsidiary of the La Poste group: to implement a generative AI platform within the bank, associated with tailor-made support for IT teams for the appropriation of the main language models of Mistral AI.

This platform, hosted locally within La Banque Postale's IT infrastructure (on-premise), allows La Banque Postale to quickly and at scale integrate high-performance generative AI solutions, enabling it to maintain control of its data and to meet the security and sovereignty challenges specific to its highly regulated banking environment.


Credit: Robinson Hecquet / From left to right: Zakaria Moursli, Deputy Managing Director at La Banque Postale in charge of operational performance, payments and digital, Stéphane Dedeyan, Chairman of the Management Board of La Banque Postale and Deputy Managing Director of the La Poste Group, and Arthur Mensh, Co-founder and CEO of Mistral AI

With Mistral AI, La Banque Postale has chosen high-performance models, optimized in terms of energy consumption and compatible with the compliance and regulatory requirements of the banking sector. This aligns with the approach initiated by the Caisse des Dépôts Group to promote digital sovereignty through its Digital Horizon 2030 plan. Digital Horizon 2030 is a major strategic plan of the Caisse des Dépôts Group, aiming to accelerate the digital transformation of the French and European economies and strengthen the technological sovereignty of local areas. With an unprecedented investment of €18 billion by 2030, Digital Horizon 2030 is fully in line with the Group's public service mission: to foster and support major transitions and prepare for the future.

A strategy structured around 3 pillars
La Banque Postale aims to progressively roll out these generative AI solutions to all employees, starting with an initial target of 5,000 employees by 2026. To support the evolution of roles and skills, this rollout will be accompanied by a training program for employees on these new tools. The program is structured around three key areas :

AI for all which aims to provide employees with a personal assistant using the Le Chat de Mistral AI solution to help them with daily tasks;

AI for IT to provide the bank's IT development teams with the Mistral Code solution to improve the efficiency and quality of certain development tasks;

AI for Business aims to accelerate the transformation of banking by integrating AI into its business processes. Use cases will focus on customer relations, anti-money laundering, and fraud prevention, and will be addressed through customized solutions developed using Mistral Studio tools, in collaboration with the relevant business units.

Source: La Poste Groupe