Tenra AI is a corporate intelligence directory operated by Kaisei Co., Ltd. It helps users research Japanese companies by business name or corporate number, linking public records to a company profile so its track record and changes can be reviewed in one place. Users can search and filter companies by prefecture, information category, and legal entity type, or explore directories organized by region, public institution, and topic.

The platform brings together data on government subsidies and public procurement, including grant awards, contracts, and bids, as well as certifications such as Health and Productivity Management recognition and government-wide vendor qualifications. It also provides information on administrative sanctions, bid suspensions, labor violations, exclusion measures, bankruptcies, corporate registry changes, and official gazette notices. Directory tools help compare company groups and monitor changes, including leadership changes and headquarters relocations identified from archived company websites. Tenra AI also offers company monitoring and updates on new developments. Its related service, Kanpo AI, enables searches for official gazette notices, including financial statements, dissolutions, mergers, and insolvency announcements.