Japan Launches Large-Scale Trial of Homegrown Gennai AI System
Japan is stepping up the use of generative artificial intelligence across its public administration, seeking productivity gains without exposing sensitive government data to external services. Gennai, developed in-house by Japan’s Digital Agency, is designed to assist with drafting official documents, translation and the organization of public comments. Its planned use in preparing parliamentary response drafts also puts the system in a particularly sensitive area of policymaking and government accountability.
The government has begun a large-scale trial of Gennai involving about 180,000 civil servants. The test will cover routine administrative work as well as the preparation of draft answers for parliamentary proceedings, allowing the Digital Agency to assess accuracy, security and practical benefits at scale. Japan aims to formally roll out the system across government agencies in fiscal 2027, using the trial to shape operating rules for generative AI in the public sector.
All Coverage
1 original reportsThe Backstory
The history behind this eventJapan’s Digital Agency Launches Large-Scale Trial of Government AI Assistant Gennai
Japan’s Digital Agency has operated Gennai, a generative AI platform built specifically for the government, internally since May 2025. It helps locate materials and draft responses for parliamentary proceedings, conduct legislative research and proofread documents. The system runs in a closed environment on the government network to reduce the risk of confidential information leaks. It is also intended to improve the efficiency of policymaking and legislative work as staffing declines and administrative workloads remain heavy.
The Digital Agency announced the start of a large-scale trial on May 28, 2026. About 100,000 government employees can already use the system, and the annual target is to cover roughly 180,000 staff across all ministries and agencies. It had previously been tested at 19 ministries and agencies since January 2026. Its parliamentary-response research and analysis function was used 1,424 times in March 2026 alone. The cost of the trial has not been disclosed.
Subscribe to Mark Radar Weekly
Every Friday, the week's strongest signals in your inbox. Unsubscribe anytime.
If you search news on Google, you can set Mark Radar as a preferred source—our coverage will show up more often in your results. Set as preferred source on Google →