Japan's MUFG rolls out ChatGPT Enterprise to about 35,000 bank employees

Mitsubishi UFJ Financial Group has deployed ChatGPT Enterprise to roughly 35,000 employees of Mitsubishi UFJ Bank as part of a multi-year collaboration with OpenAI to become what the group calls AI-native, according to reports published Sunday. The programme mandates training participation for all covered staff, with more than 1,800 custom GPTs reportedly built in the first four months and workload reductions of 20–30 percent claimed on selected tasks. The bank plans to extend AI use into its digital banking operations, including an AI concierge and a money-advisory platform.

The deployment follows Spain's BBVA, which put ChatGPT Enterprise in front of 100,000 employees with 20,000-plus custom GPTs and roughly three hours of weekly time savings per employee — both banks' efficiency figures are vendor-reported and unaudited. Two of the world's largest banks running mass AI rollouts with mandatory training, champion networks and early security/legal/compliance involvement marks the transition from experimentation to governed, board-level programmes. The reported production use cases skew toward document-heavy work — credit analysis and legal responses — which is where third-party implementation partners increasingly find their opening.