MIXI ChatGPT Enterprise Deployment

MIXI has integrated ChatGPT Enterprise across its entire organization to enhance operational efficiency and foster innovation in its lifestyle, digital entertainment, and sports businesses. The deployment resulted in some departmental projects reducing work hours by more than 90% and the creation of over 1,600 custom GPTs by employees.

Rapid Enterprise Deployment and Enablement

MIXI completed the rollout of ChatGPT Enterprise to all employees in 45 days, a process that typically takes several quarters. This rapid deployment was supported by OpenAI’s Customer Success team, which provided mitigation playbooks to address concerns regarding personal data handling and operational stability.

To ensure adoption, MIXI implemented three flagship enablement programs:

  • ChatGPT 101 training: Live sessions focused on practical, day-to-day prompts to reduce workload.
  • New-hire workshop: Generative AI onboarding for April 2025 graduates to build AI fluency from the start.
  • Hackathon: A sprint using the OpenAI Agents SDK to build and ship prototypes.

Transition to a Secure, Unified AI Environment

Before the enterprise rollout, MIXI subsidized ChatGPT Plus subscriptions for over 1,000 employees. However, the company faced challenges with inconsistent data-training settings and unclear internal data handling guidelines. The transition to ChatGPT Enterprise provided a secure, unified environment where employees could safely access internal data and share expertise through custom GPTs.

Application in FamilyAlbum

For FamilyAlbum, a photo and video-sharing app with over 25 million users, MIXI uses custom GPTs to streamline advertising creative planning and brand consistency. This has reduced advertising work by approximately 28 hours per month.

Key tools include:

  • Copy Checker GPT: Ensures taglines align with the "FamilyAlbum-like" brand voice by suggesting softer phrases to replace aggressive wording.
  • Creative Planning GPT: Allows non-native speakers to generate global ad copy that respects local nuance and brand values, producing full headline-to-call-to-action sets.

Efficiency Gains in Investment Analysis

MIXI’s investment division, which manages a portfolio of over 3,000 companies across more than 70 funds, uses AI to monitor investment targets and perform risk assessments.

The division created the ‘VC Fund Initial Review Support’ GPT, which structurally organizes proposals from VC funds. This tool has reduced the time required for a single investment evaluation from 1–2 hours down to 5–10 minutes. The investment division has reported workload reductions of over 70% in several instances.

Organizational Impact and Employee Empowerment

Within three months of implementation, over 80% of employees became active weekly users. The creation of over 1,600 GPTs has shifted the company culture, allowing non-technical employees to build their own tools.

‘Some projects have cut work hours by over 90%,’ notes Tatsuma Murase, Director and Senior Corporate Officer.

Junpei Yoshino, CTO of MIXI, emphasizes that the regained time is used to accelerate new ideas and focus on interpersonal communications and relationship-building tasks.

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