Best AI Infrastructure Companies in Tokyo, Japan
The 44 best AI Infrastructure companies in Tokyo, Japan in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Sakana.
Our analysis of 50 AI Infrastructure companies
$46.6b in tracked funding; 98% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best AI Infrastructure companies in Tokyo
| # | Company | Disclosed funding | Last round | Stage | Employees | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Sakana 🦄 Provider of AI research laboratory services | $344M | 5 mo ago | Series B | — | Alex Yu Co-Founder & COO | VarnishGitHub Pagescore-js+6 | — | 2 job openings · 2 launchs |
| 2 | Preferred Infrastructure 🦄 Developer of AI infrastructure, foundation models, and product solutions | $125M | 15 mo ago | Series D | 205 | Daisuke Okanohara Co-Founder | WordPressMySQLPHP+19 | — | — |
| 3 | Stockmark Developer of AI solutions for text data analysis and utilization | $59M | 22 mo ago | Series D | 54 | Kosuke Arima Co-Founder Cto | WordPressApple iCloud MailGoogle Workspace+29 | — | — |
| 4 | LeapMind Provider of deep learning and compression solution | $46M | 82 mo ago | Series C | 46 | — | — | 43 patents Edge AI hardware accelerators for neural network inference and image processing. | — |
| 5 | Midokura Open source edge platform providing network virtualization solution | $45M | 122 mo ago | Acquired | 80 | — | WordPressMySQLPHP+27 | — | 1 partnership |
| 6 | Cogent Developer of artificial intelligence solutions for data extraction and document processing | $36M | 34 mo ago | Series D | 47 | Eric Whiteway Founder & CEO | WordPressMySQLPHP+26 | — | 1 launch |
| 7 | EdgeCortix Developer of energy-efficient AI processors, accelerators, modules, cards, and systems | $28M | 4 mo ago | Series B | 37 | Sakya Dasgupta Founder & CEO | HubSpot CMS HubHubSpotcore-js+16 | 15 patents Patents concentrated in computing, sensing & instrumentation | — |
| 8 | Fairy Devices Enterprise solutions for remote working and assistance for industrial field workers | $25M | 38 mo ago | Series B | 16 | — | Node.jsNext.jsReact+14 | 80 patents Network session management and image processing for communication devices | 1 award |
| 9 | Fronteo Provider of AI solutions for legal, life science, and business | $22M | 116 mo ago | Public | 297 | — | WordPressApple iCloud MailMicrosoft 365+35 | 117 patents Bioinformatics pathway analysis and similarity search using machine learning techniques. | — |
| 10 | Fast Label Provider of an AI-based annotation platform | $22M | 16 mo ago | Series B | 13 | — | STUDIOApple iCloud MailGoogle Workspace+16 | — | — |
| 11 | Ubitus Provider of cloud gaming, metaverse streaming, and artificial intelligence solutions | $17M | 17 mo ago | Series D | 117 | — | WordPressMySQLPHP+15 | 19 patents AI-driven media compression, quality enhancement, and game bot training technologies. | — |
| 12 | Kotoba Technologies Platform that provides translation and speech-to-text solutions | $12M | 13 mo ago | Seed | — | Noriyuki Kojima CO-Founder & CEO | Cart FunctionalitySquarespace CommerceSquarespace+15 | — | 3 job openings · 2 partnerships |
| 13 | EDGEMATRIX Developer of edge AI-based video surveillance solutions for smart cities | $9M | 83 mo ago | Series A | 14 | — | NginxAmazon Web Servicescore-js+8 | — | — |
| 14 | Citadel AI Software products and services to test, and monitor the quality and reliability of AI systems | $5M | 37 mo ago | Series A | — | Kenny Song Co-Founder | WordPressMySQLPHP+20 | 6 patents AI hardware/software platforms for machine learning inference and data processing | — |
| 15 | Citadel AI Provider of ML model monitoring platform for enterprises | $5M | 37 mo ago | Series A | 12 | Kenny Song Co-Founder & CTO | — | 6 patents AI hardware and software platforms for machine learning model training and inference | — |
| 16 | Ecumenopolis Developer of general-purpose conversational AI agent | $3M | 17 mo ago | Seed | — | Keita Miyamura Co-Founder | — | — | — |
| 17 | Studio Ousia Platform to improve customer targeting and recommendation using natural language processing | $3M | 114 mo ago | Series B | 9 | — | — | — | — |
| 18 | Poetics Provider of solutions to create conversational AI with algorithms and machine learning | $3M | 22 mo ago | Series A | 15 | Hazumu Yamazaki Co-Founder & Co-CEO | WebflowApple iCloud MailGoogle Workspace+24 | — | — |
| 19 | Almure Developer of confidential computing technology for secure enterprise AI agents | $1M | 4 mo ago | Seed | — | Atsuki Momose Founder & CEO | — | — | — |
| 20 | GAZAI Platform offering AI-powered tools to analyze, generate, and automate insights from visual and multimedia… | $697K | 23 mo ago | Seed | — | Takuya Kanda Co-Founder | STUDIOApple iCloud MailGoogle Workspace+11 | — | — |
| 21 | miibo AI construction platform developing conversational AI bots | $408K | 32 mo ago | Seed | — | Masashi Kuto CEO | — | — | — |
Top 12 AI Infrastructure companies in Tokyo
#1
Sakana 🦄Series B · Tokyo, Tokyo · founded 2023$344Mraised▾
Sakana AI is a Tokyo-based R&D company founded by former Google AI engineers, David Ha and Llion Jones. Inspired by nature, Sakana AI aims to design collective artificial intelligence models.
- Mar 2026Series B—
- Feb 2026Series B—
- Jan 2026Series B—
- Nov 2025Series B$135M
#2
Series B · Chuo, Tokyo · founded 2019 · 37 employees$28Mraised▾
Developer of energy-efficient AI processors, accelerators, modules, cards, and systems. The company offers a software platform facilitating AI inference across heterogeneous systems. Its technology includes a reconfigurable, highly-parallelized architecture. The company's products handle vision tasks and large language models in low-power environments.
- Apr 2026Series B—
- Nov 2025Series B$110M
- Aug 2025Series B—
- Jun 2025Grant (prize money)$21M
#3
Series D · Tokyo, Tokyo · founded 2014 · 205 employees$124.9Mraised▾
Developer of AI infrastructure, foundation models, and product solutions. The company develops AI semiconductors, computing infrastructure, generative AI models, and AI product solutions. It researches and develops new technologies, applying them across industries. The company provides AI products and solutions for various sectors.
- Apr 2025Conventional Debt—
- Apr 2025Series D$35.1M
- Dec 2024Conventional Debt—
- Dec 2024Series D$120.8M
#4
Seed · Tokyo, Tokyo · founded 2026$1.3Mraised▾
Developer of confidential computing technology for secure enterprise AI agents. This technology provides security for data processing within artificial intelligence systems. It enables the execution of workloads while maintaining strict data protection standards. The platform facilitates the integration of sensitive information into automated processes by ensuring cryptographic security during computation.
- Apr 2026Seed$1.3M
#5
Series B · Shinagawa, Tokyo · founded 2020 · 13 employees$22Mraised▾
Provider of an AI-based annotation platform. It provides multiple annotation solutions that include images and videos, rectangles and segmentations, and key points. It also provides visualization, data analysis, collaboration, and extraction solutions. It has use cases for drones, robotics, self-driving cars, construction, sports, and medical applications.
- Mar 2025Conventional Debt$1.3M
- Sep 2024Series B$2.1M
- Sep 2024Series B$8.7M
- Nov 2023Series B$7.8M
#6
Seed · Chiyoda City, Tokyo · founded 2023$11.8Mraised▾
Platform that provides translation and speech-to-text solutions. It is a developer of speech AI technologies, including translation and speech-to-text. It offers end-to-end voice translation, dubbing, voice cloning, and speech generation. The company develops high-speed ASR models and provides bilingual versions with end-to-end bidirectional voice-to-text translation.
- Jun 2025Seed$11.8M
#7
Series D · Minato City, Tokyo · founded 2016 · 54 employees$58.8Mraised▾
Developer of AI solutions for text data analysis and utilization. The company provides tools for transforming organizational text data into actionable insights. These solutions support decision-making and aim to enhance business processes. The company offers services including AI implementation and customized AI agent development.
- Oct 2024Series D$30.1M
- Aug 2022Seed—
- Mar 2021Seed—
#8
Series D · Tokyo, Tokyo · founded 2007 · 117 employees$17Mraised▾
Provider of cloud gaming, metaverse streaming, and artificial intelligence solutions. The company offers GPU virtualization technology and a cloud streaming platform. It converts titles to cloud versions for customized cloud gaming platforms. The company provides support for AI applications, including deployment of large language models and training of drawing models.
- Feb 2025Series D—
- Mar 2024Series D—
- Mar 2021Series C—
- May 2013Series B$15M
#9
Seed · Shinjuku City, Tokyo · founded 2022$3.3Mraised▾
Developer of general-purpose conversational AI agent
- Mar 2025Seed$1.7M
- Aug 2024Seed—
- Aug 2022Seed$3.3M
#10
Series A · Shibuya, Tokyo · founded 2017 · 15 employees$3Mraised▾
Provider of solutions to create conversational AI with algorithms and machine learning. It analyzes human emotions through voice and uses sound features to determine the fluctuation of emotions.
- Oct 2024Series A—
- Jan 2023Series A—
- Jul 2018Series A$3M
#11
Series D · Shibuya, Tokyo · founded 2014 · 47 employees$35.6Mraised▾
Developer of artificial intelligence solutions for data extraction and document processing. The company provides services for automating complex tasks and managing information. These services include optical character recognition, data quality control by professional operators, and document digitization. The company also offers digital storage solutions for data access, organization, and sharing.
- Oct 2023Series D—
- Apr 2020Series C$13M
- May 2019Series B$11M
- Feb 2017Series A$11.6M
#12
Series B · Tokyo, Tokyo · founded 2008 · 16 employees$24.7Mraised▾
Enterprise solutions for remote working and assistance for industrial field workers. Its devices provide speech and voice processing solutions for man-machine interaction. Its product Mimi is a deep learning technology-based cloud platform for voice information processing.
- Jun 2023Series B$15M
- Jul 2022Series A—
- Feb 2021Series A$9.7M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of AI Infrastructure coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
What Tokyo researches in ai accelerators
- Tokyo Electron3
- Tokyo Institute of Technology3
- The University of Tokyo3
- IBM Research - Tokyo2
- Tokyo University of Information Sciences1
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.