ChatSense
Category: AI in Productivity
Enterprise-grade secure generative AI platform (ChatGPT/Claude/Gemini) for large Japanese corporations, enabling internal data search, RAG, and AI agents with security/governance controls. ChatSense was founded in 2019. The company is led by Atsushi Kadowaki (門脇敦司). Based in Minato, Tokyo, Japan. Team size: 11-50. Latest round: Seed.
- Founded
- 2019
- Headquarters
- Minato, Tokyo, Japan
- Team size
- 11-50
Value proposition
Lets large enterprises and public-sector organizations safely use ChatGPT/Claude/Gemini on internal data (Box, SharePoint, Teams, Notion) with enterprise security (SSO, IP restriction, audit logs) and GraphRAG-based cross-document search that converts tacit veteran knowledge into explicit, searchable knowledge.
Products and solutions
ChatSense core chat platform (multi-model: GPT-5 series, Claude, Gemini), GraphRAG-based internal data search, ChatSense Notebook (document-grounded Q&A; Box/Notion ingest; citation-backed Word report generation), AI slide generation, Cowork (browser/RPA automation agent), Outlook/Teams AI agent integration, transcription AI, image generation
Unique value
Combination of enterprise-grade security (data not used for model training, SSO, governance dashboards) with deep internal-data integration (Box/SharePoint/Teams/Notion) and GraphRAG search that surfaces indirectly related knowledge competitors' keyword search misses.
Target customer
Large Japanese enterprises (including Tokyo Stock Exchange Prime-listed companies), national universities, government agencies, and municipalities requiring high security/compliance for generative AI adoption.
Industries served
Cross-industry: manufacturing, food/consumer goods, local government/public sector, finance, and other large enterprises.
Technology advantage
GraphRAG (graph-based retrieval-augmented generation) for relationship-aware document search; citation-grounded answers for audit/compliance use; official OpenAI/Anthropic/Google APIs (no training reuse of customer data); no-code custom department-specific Copilot builder.
How they differentiate
Focus on large-enterprise security/governance plus GraphRAG search depth versus lighter-weight consumer-oriented tools like Notion AI; multi-LLM aggregation (GPT/Claude/Gemini in one platform) vs. single-vendor competitors like Sansan (CRM-data-specific).
Main competitors
Sansan AI Agent, Notion AI, other Japanese enterprise generative AI/RAG platforms referenced in ChatSense's own comparison page (labeled 'A社/B社/C社').
Key partnerships
OpenAI (official API), Anthropic (official API), Google (official API for Gemini), Microsoft Azure OpenAI Service (enterprise deployment option), Box (certified Box Ecosystem Solution for secure GenAI on Box data)
Notable customers
Fujitsu General (富士通ゼネラル), Ajinomoto Frozen Foods (味の素冷凍食品), Shimotsuma City government (下妻市役所), Mitsui & Co. (三井物産), Gunma Prefecture (群馬県), Kagoshima University (鹿児島大学), National Cancer Center (国立がん研究センター), Nihon Sharyo (日本車両)
Major milestones
2019-04-10: Founded as Knowledge Sense, Inc. (株式会社ナレッジセンス) by Atsushi Kadowaki while Univ. of Tokyo student, Product evolved to enterprise-secure ChatSense with GraphRAG, multi-LLM (GPT-5 series/Claude/Gemini), Notebook, Cowork RPA agent, 2026-08-10: Notion URL-based page ingestion for RAG, 2026-08-11: Box files directly ingestible into Notebook for slide generation, 2026-08-14: Notebook AI citation-backed Word report generation announced
Growth metrics
500+ companies/organizations using ChatSense as of 2026, including Tokyo Stock Exchange Prime-listed firms, national universities, and government bodies; claimed efficiency gains e.g. 92% reduction in meeting-material creation time via AI slide generation.
Market positioning
Mid-market to enterprise leader in Japan's secure generative-AI-for-business category, claiming 500+ corporate/government deployments including Prime-listed companies.
Geographic focus
Japan (domestic enterprise and public-sector market).
About Atsushi Kadowaki (門脇敦司)
University of Tokyo (attended); self-taught programmer; sales internship at Manabo; founded Knowledge Sense in 2019 while a university student (age ~22).
Latest news about ChatSense
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Official website: https://chatsense.jp/
