11 companies · updated 2026-11-05
11 AI companies with their headquarters in Bunkyo, most active first.
Entertainment-focused AI for manga translation and localization (Mantra Engine) plus the manga language-learning app Langaku.
Leadership: 石渡 祥之佑 (代表取締役)
GenAI training, consulting, and AIEO/ChatGPT Ads implementation for Japanese businesses.
Leadership: 佐藤 傑 (代表取締役)
Platform for evaluating, monitoring and governing AI systems — Citadel Lens for AI risk evaluation and governance, Citadel Radar as a real-time firewall for generative AI apps.
Leadership: 小林 裕宜 (Hironori Kobayashi) (CEO & Co-Founder) · Kenny Song (CTO & Co-Founder)
Japan's leading legal research platform and legal data & AI company (Legal Intelligence API).
Leadership: 八木田 樹 (代表取締役社長・最高経営責任者)
Listed AI company whose PKSHA ChatAgent and VoiceAgent SaaS automate chat and phone customer contact for Japanese enterprises.
Leadership: 上野山 勝也 (Katsuya Uenoyama) (代表取締役 (Representative Director))
AI-driven and no-code development studio for SMBs that embeds FDE engineers and builds a per-company AI management OS (NOAH).
Leadership: 渡辺 敦司 (代表取締役)
GDEP Solutions, an NVIDIA elite partner founded in 2016 and part of the Prometech Group, sells and rents high-performance GPUs, GPU servers, workstations, and storage for AI/generative-AI workloads, and builds proprietary products including
Leadership: Tadayuki Sakakibara (榊原忠幸) (Representative Director / President and CEO)
Industry-academia AI advisory arm of the University of Tokyo's Matsuo-Iwasawa Lab, running AI solution development engagements and corporate AI education programs.
Leadership: 川上 登福 (Takayoshi Kawakami) (代表取締役 / CEO)
University of Tokyo Matsuo Lab-affiliated startup that designs and builds bespoke AI systems (e.g. a RAG application for NYK Line's ship-management operations) for problems generic SaaS can't solve, and also runs AI-literacy seminars for co
Leadership: Yuya Tokunaga (徳永優也) (Representative Director & CEO)
Healthcare-tech company (not to be confused with unrelated same-named firms) offering AI voice-recognition software that auto-drafts medical records from consultation conversations, an AI patient-intake questionnaire, and a physician-review
Leadership: Toshihiko Sato (佐藤寿彦) (Representative Director & CEO)
Designs and manufactures robot systems including the Torobo humanoid robot, Torobo Hand multi-fingered gripper, and Torobo GTC autonomous logistics mobile manipulators; became a wholly-owned subsidiary of Yaskawa Electric on July 1, 2025.
Leadership: Yoshihiro Sakamoto (Representative Director (代表取締役))