JapanReal estate2025 – ongoingMitsui Fudosan
ChatGPT Enterprise and employee-built custom GPTs
Mitsui Fudosan reported about 500 custom GPTs operating after its company-wide rollout
Problem
Mitsui Fudosan wanted employees to spend less time on routine work while developing proposals for increasingly varied customer needs.
Approach
The company introduced ChatGPT Enterprise to all approximately 2,000 employees in October 2025. AI promotion leaders helped departments build assistants incorporating their rules and manuals. Employees could create and share these custom GPTs without programming.
Results
Takeaway
The rollout produced a reported count of operating assistants. The company-wide reduction in working time remained a target.
Categories
- Size
- Large enterprise
- Industry
- Real estate
- Business function
- Internal work and knowledge management
- Innovation type
- Process innovationOrganization and work practices
- AI technology
- Generative AI
- Adoption
- Off-the-shelf tool or platform
- Evidence
- Company's own claim
Sources
Source summaries
Mitsui Fudosan described its October rollout and departmental assistant development. It reported approximately 500 operating custom GPTs and presented a reduction in working time of more than 10% as a future target.
Full details are in the original sources.
