Credit Saison reported that a pilot of ChatGPT Enterprise delivered a 954% return on investment and saved an average of 14 hours per participant each month, equivalent to about 169 hours per year. The company said the pilot ran from late June to early August 2025 with 315 participants, representing just under 10% of its roughly 3,700 employees in Japan.
Pilot design and adoption
The pilot group included volunteers, staff nominated by the project team, every executive including the president, and representatives from every department. Credit Saison stated that the results substantially exceeded internal targets of 500% ROI and 7.5 hours saved per person per month. In a post-pilot survey, the company reported that 75% of managers and 70% of nonmanagerial employees said they could not do without ChatGPT Enterprise.
Credit Saison described steps taken to drive adoption: a Center of Excellence shared wins and lessons in a dedicated Slack channel, OpenAI provided executive training and practical workshops, and leaders used the tools themselves. Kazutoshi Ono, Credit Saison’s Senior Managing Executive Officer, CDO, and CTO, was quoted as saying, “We won’t know until we really put it to work.” Katsumi Mizuno, representative director, executive president and COO, created a custom GPT for company research and incorporated it into daily work.
Use cases and operational impact
The company highlighted several practical applications. A custom GPT summarizes daily retail counter debriefs from audio, reducing documentation time and is now used at every location. A company-research GPT helps corporate sales teams analyze customers and prepare proposals. An inside-sales prospect roleplay GPT uses voice to simulate customers and give feedback, enabling practice for new hires without diverting senior staff.
Credit Saison also reported broader operational effects: approximately 80% of respondents in the legal department said the tool improved their ability to do their jobs, and more than 80% in IT reported greater job satisfaction. The engineering team’s use of Codex was reported to save about 850 hours per month on average.
The company approved a companywide rollout within one month of completing the pilot and rolled out ChatGPT Enterprise to all employees in September 2025. Credit Saison said it is pursuing three dimensions of AI transformation—Employee AX, Customer AX, and Corporate AX—including development of an in-house AI call center and further evaluation of new capabilities with OpenAI, while emphasizing customer data protection as a prerequisite.
Original source: OpenAI News