Fixstars
Tokyo, Japan
Performance engineering for AI inference
ML runtime & inf…FinOps & cloud c…
- records
- 1
- team
- 200+
- founded
- 2002
Regional · Japan
AI builders in Japan.
Verified AI-implementation providers headquartered in Japan. Default sort: highest verification level first.
Japan's AI delivery market is at an inflection point: manufacturing giants driving Industry 4.0 AI, a financial services sector facing accelerating automation, and a productivity crisis that makes AI deployment a government policy priority. Japanese-language LLMs and document understanding are in high demand.
121 verified providers are headquartered in Japan today, with the deepest earned capability count in Generative AI & RAG (17), Cloud migration (15), and Vulnerability management (15). Ranking is plan-blind: verification level, contributing record count, and recency are the only signals used. A free-plan L5 provider always outranks a paid-plan L1. Most recent verification in this market: 2026-07-07.
Ridge-i
Tokyo, Japan
Deep-learning consulting and development
ML runtime & inf…Data platform en…
- records
- 1
- team
- 50-200
- founded
- 2016
Smart Governance
Tokyo, Japan
We design governance to implement innovation.
AI governance & …AI strategy & ad…
- records
- 1
- team
- 10-50
- founded
- 2022
Citadel AI
Tokyo, Japan
Testing and monitoring high-risk AI systems.
AI governance & …MLOps
- records
- 1
- team
- 10-50
- founded
- 2020
TUV Rheinland Japan
Yokohama, Japan
First ISMS-AC accredited ISO/IEC 42001 certification body in Japan.
ISO 42001 AI man…ISO 27001 certif…
- records
- 1
- team
- 200+
- founded
- 1985
VLC Security
Tokyo, Japan
Toranomon-based information-security firm with an ISO/IEC 42001 acquisition service.
ISO 42001 AI man…ISO 27001 certif…
- records
- 1
- team
- 50-200
- founded
- 2003
NS Solutions
Tokyo, Japan
Nippon Steel Group SI with a Snowflake DWH practice
Warehouse migrat…Data platform en…Cloud migration+1 more
- records
- 1
- team
- 200+
- founded
- 1980
Mitsui Knowledge Industry
Tokyo, Japan
Mitsui Group IT services firm with a Databricks migration practice
Warehouse migrat…Data platform en…Cloud migration
- records
- 1
- team
- 200+
- founded
- 1991
UBsecure
Tokyo, Japan
Web application security firm behind the Vex scanner, part of NRI Secure Group
Application secu…Penetration test…Vulnerability ma…
- records
- 1
- team
- 50-200
- founded
- 2007
SB Technology
Tokyo, Japan
SoftBank Group technology company running managed security operations
SOC & MDR monito…Incident responseVulnerability ma…
- records
- 1
- team
- 200+
- founded
- n/a
Leon Technology
Tokyo, Japan
Ikebukuro boutique QSA and pentest firm
PCI DSS assessmentVendor & third-p…
- records
- 1
- team
- 10-50
- founded
- n/a
NRI Secure Technologies
Tokyo, Japan
Otemachi-based QSA arm of Nomura Research Institute
PCI DSS assessmentISO 27001 certif…Vendor & third-p…
- records
- 1
- team
- 200+
- founded
- 2000
Sompo Cyber Security
Tokyo, Japan
SOMPO Risk Management's cybersecurity arm
Blue team & dete…SOC & MDR monito…Incident response+2 more
- records
- 1
- team
- 50-200
- founded
- n/a
TrustNow
Tokyo, Japan
OneTrust distributor and Vanta MSP for Japanese teams pursuing HIPAA, SOC 2, and ISO 27001.
HIPAA complianceISO 27001 certif…SOC 2 audit & at…+1 more
- records
- 1
- team
- 2-10
- founded
- 2022
Atsumi & Sakai
Tokyo, Japan
Tokyo law firm with a Prototype Policy Research Institute.
AI governance & …
- records
- 1
- team
- 200+
- founded
- 1994
FFRI Security
Tokyo, Japan
Tokyo-listed cybersecurity research firm with a Japan-focused analysis service
Threat huntingVulnerability ma…Incident response
- records
- 1
- team
- 50-200
- founded
- 2007
Anderson Mori & Tomotsune
Tokyo, Japan
Japanese law firm with a Tech/Data/IT/Telecom practice.
AI governance & …
- records
- 1
- team
- 200+
- founded
- 2005
Beyond Co., Ltd.
Osaka, Japan
Multi-cloud MSP with SRE, IaC, and load testing services
SRE & load-hold …Cloud migrationKubernetes opera…
- records
- 1
- team
- 50-200
- founded
- 2007
Avinton Japan
Yokohama, Japan
Big data, AI, and machine vision consulting
ML runtime & inf…Data platform en…
- records
- 1
- team
- 10-50
- founded
- 2010
ABeam Consulting
Tokyo, Japan
Japan-headquartered pan-Asia consulting firm.
AI governance & …AI strategy & ad…RAG+1 more
- records
- 1
- team
- 200+
- founded
- 1981
Ridgelinez
Tokyo, Japan
AI governance and risk transformation
EU AI Act confor…ISO 42001 AI man…
- records
- 1
- team
- 200+
- founded
- 2020
Ray Aegis Japan
Tokyo, Japan
Vulnerability assessment and pentest provider with per-FQDN flat-rate pricing
Penetration test…Vulnerability ma…Application secu…
- records
- 1
- team
- 10-50
- founded
- n/a
primeNumber Inc.
Tokyo, Japan
Data engineering + TROCCO ELT
DataOps & data q…Data platform en…
- records
- 1
- team
- 100-200
- founded
- 2015
Persol Cross Technology (Cloud Steady)
Tokyo, Japan
Azure-focused FinOps practice inside the Persol Group
FinOps & cloud c…
- records
- 1
- team
- 200+
- founded
- n/a
Showing the top 24 of 121, narrow by capability, country, or verification level in the panel above to see the rest.
By capability
Verified shortlists in Japan by capability.
Capabilities with at least five cross-referenced (L2+) builders headquartered in Japan. Each links to the verified shortlist for that capability in this market.
- Generative AI & RAG17 verified
- Cloud migration15 verified
- Vulnerability management15 verified
- Data platform engineering13 verified
- ISO 27001 certification12 verified
- Incident response12 verified
- AI strategy & advisory11 verified
- Data engineering for AI11 verified
- Penetration testing10 verified
- SOC & MDR monitoring9 verified
- Computer vision9 verified
- FinOps & cloud cost8 verified
- ISO 42001 AI management8 verified
- AI agents & automation8 verified
- MLOps & evaluation7 verified
- Vendor & third-party risk7 verified
- SRE & load-hold verification7 verified
- PCI DSS assessment6 verified
- Threat hunting6 verified
- DataOps & data quality6 verified
- Platform engineering6 verified
- Custom model fine-tuning6 verified
- AI governance & compliance5 verified
- Application security5 verified
- Kubernetes operations5 verified
- EU AI Act conformity5 verified
Related
Related
- Fixstars
- Ridge-i
- Smart Governance
- Citadel AI
- TUV Rheinland Japan
- Verified Generative AI & RAG
- Verified Cloud migration
- Verified Vulnerability management
- Verified Data platform engineering
- Verified ISO 27001 certification
- Verified Incident response
- Verified AI strategy & advisory
- Verified Data engineering for AI
- Verified Penetration testing
- Verified SOC & MDR monitoring
- Verified Computer vision
- Verified FinOps & cloud cost
- Verified ISO 42001 AI management
- Verified AI agents & automation
- Verified MLOps & evaluation
- Verified Vendor & third-party risk
- Verified SRE & load-hold verification
- Verified PCI DSS assessment
- Verified Threat hunting
- Verified DataOps & data quality
- Verified Platform engineering
- Verified Custom model fine-tuning
- Verified AI governance & compliance
- Verified Application security
- Verified Kubernetes operations
- Verified EU AI Act conformity
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