TLDR: Japanese gaming giant MIXI has successfully integrated OpenAI’s ChatGPT Enterprise across its operations, impacting over 1,000 employees. The swift 45-day deployment has led to significant improvements in communication and efficiency, with reported work hour reductions of over 90% in some areas and a company-wide saving of approximately 17,600 hours monthly. The initiative emphasizes a secure AI environment and comprehensive training, fostering a culture where employees actively develop custom AI tools.
Japanese entertainment company MIXI, renowned for its popular mobile game ‘MONSTER STRIKE’ and the ‘FamilyAlbum’ application, has announced a transformative partnership with OpenAI, successfully deploying ChatGPT Enterprise across its entire workforce. This strategic move, completed in a remarkably swift 45-day period, aims to revolutionize internal communication and significantly boost workplace efficiency for over 1,000 employees.
The integration of OpenAI’s enterprise-grade AI solution is designed to enhance operational processes, foster innovation, and drive overall productivity. ChatGPT Enterprise offers robust features crucial for large organizations, including enhanced security measures, stringent administrative controls, and higher usage limits. Importantly, OpenAI assures that business data, including inputs and outputs, is not used for training or improving their models by default, and data is protected with industry-standard encryption, supporting compliance with regulations like GDPR and CCPA.
MIXI’s commitment to a secure and effective AI adoption was evident through its structured training programs. These included ‘ChatGPT 101 training’ for all employees, workshops for new hires joining in 2025, and a Hackathon for engineers utilizing the OpenAI Agents SDK. These initiatives were pivotal in empowering employees to leverage AI autonomously.
The results of this rapid deployment have been substantial. Within less than three months of company-wide implementation, the weekly active user (WAU) rate for ChatGPT Enterprise reached over 80%. Furthermore, employees spontaneously created more than 1,800 custom GPTs, demonstrating a deep integration of AI into daily workflows and a shift towards a ‘mastered power’ rather than just a ‘tool to be used,’ as noted by MIXI Director and Senior Executive Tatsuma Murase.
Quantifiable benefits include a projected monthly reduction of approximately 17,600 work hours across the company, equating to about 11 hours saved per employee per month. Some projects have seen even more dramatic improvements, with work hours reduced by over 90%. An internal survey revealed that 99% of users experienced increased productivity, and 89% reported higher job satisfaction.
Specific examples of AI’s impact within MIXI include the ‘FamilyAlbum’ team, which utilized GPT technology to optimize advertising creatives, reducing work time by approximately 28 hours. The investment department developed a specialized ‘Risk Fund Initial Review Support’ GPT, drastically cutting investment proposal review times from 1-2 hours to just 5-10 minutes. As of July 2025, MIXI has over 300 AI-related projects underway, with a remarkable 99% AI utilization rate among all employees.
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Tatsuma Murase emphasized that the company-wide adoption of ChatGPT Enterprise is not merely for efficiency but serves as ‘infrastructure development’ to enable employees to focus on more creative and impactful work. MIXI plans to continue leveraging OpenAI’s products to explore new possibilities in ‘communication x AI,’ aiming to create meaningful connection experiences for its users.
