What N4 does

N4合同会社 (N4) is a privately held Tokyo-based software company founded in November 2019 by Naoki Watanabe (渡邊直樹), focused on commercializing generative AI products for Japanese small and medium businesses. The company develops and sells two core AI products: SolidChat, a ChatGPT-powered chatbot that retrieves and synthesizes answers from internal corporate documents, and FormReach, an AI-driven sales automation tool that manages target list creation, message generation, and outreach delivery. These products are complemented by DX consulting services, generative AI training seminars (covering ChatGPT and Microsoft Copilot), and custom contracted development spanning AI R&D and web application design. Underlying technology is built on third-party large language models (notably OpenAI's ChatGPT) combined with proprietary business-process integrations; the company does not disclose proprietary foundation models, patents, or research publications.

The go-to-market is direct sales to Japanese enterprises and SMBs, supplemented by an active trade show presence (notably booth G04 at the SME New Manufacturing/Services Exhibition at Tokyo Big Site in December 2025) and a corporate website with inquiry forms. The company has secured regulatory distribution advantages via Japan's IT導入補助金 (IT Introduction Subsidy) program, under which both SolidChat and FormReach are approved eligible tools for fiscal 2025 and 2026, enabling SMB customers to purchase with government financial support. NVIDIA Inception Program membership (since July 2024) provides additional GPU ecosystem access. The company is a founder-owned Japanese LLC (合同会社) with no disclosed external investment, no disclosed subsidiaries, and no disclosed headcount.

Name

N4

Legal name

N4合同会社

Website

https://nnnn.co.jp

Company type

Private

Founded year

2019

Operating status

Operating

Short description

N4合同会社 is a privately held Tokyo-based company founded in 2019 that builds generative AI products — SolidChat (internal-document chatbot) and FormReach (sales outreach automation) — and provides DX consulting and contracted AI development for Japanese enterprises and SMBs.

Ownership category

akta.pro rank

Product category

Generative AI Business Software

NAICS

Software Publishers (5132), Custom Computer Programming Services (541511)

SIC

Services-Prepackaged Software (7372), Services-Computer Programming, Data Processing, Etc. (7370), Services-Management Consulting Services (8742)

akta.pro primary industry

LLMOps & Generative AI Platforms (Prompt/Agent Orchestration, RAG) (HDAEANAD)

akta.pro secondary industries

Generative AI & LLM Solutions Services (RAG, Agents, Copilots) (BPAEAHAG), AI Integration & Orchestration Platforms (Connectors, Workflow, iPaaS for AI) (HDAEANAI), AI/ML Engineering & Model Development Services (BPAEAHAF)

Keywords

• AI document chatbot
• Sales automation software
• Generative AI consulting
• DX transformation services
• LLM enterprise tools

Headquarters

HQ city

Akasaka

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations

Revenue model

1. AI Product Licensing (SolidChat, FormReach): The company generates revenue through licensing its AI-powered software products, SolidChat (AI chatbot) and FormReach (sales automation), which are available through the IT導入補助金 program for SMBs.
2. DX Consulting Services: DX consulting services supporting digital transformation initiatives and providing generative AI utilization strategies for business improvement and automation.
3. Generative AI Training Seminars: Seminars on generative AI utilization including ChatGPT and Copilot, providing practical guidance on implementation methods and specific use cases for business efficiency.
4. Contracted Development Services: Custom AI research and development services, web application design and development, UI/UX design, combining academic research with practical business application development.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

N4合同会社 develops and sells two core generative AI software products: SolidChat, a ChatGPT-powered internal document chatbot that instantly parses large document repositories to answer employee questions, and FormReach, an AI-based sales automation tool that manages the entire outreach workflow from target list creation to message generation and delivery. In addition, the company provides DX consulting, generative AI training seminars, and contracted AI/web software development to Japanese businesses seeking productivity improvements through LLM-based solutions.

Product overview

N4合同会社 offers a portfolio of generative AI-powered products and services. The core offerings include SolidChat, an AI chatbot powered by ChatGPT that retrieves and synthesizes information from internal company documents, and FormReach, an AI-driven sales automation tool for automated outreach. These products are complemented by DX consulting services and generative AI seminars, as well as contracted software development services spanning AI R&D and web application development.

Differentiator

Problem solved

Functional benefit

Brands

• SolidChat: AI chatbot tool powered by ChatGPT that instantly analyzes vast internal documents and provides immediate answers to any questions, improving business efficiency and productivity.
• FormReach

Products and services

• SolidChat AI chatbot powered by ChatGPT that instantly analyzes large volumes of internal company documents and provides immediate natural-language answers to user questions, designed for Japanese SMB and enterprise knowledge management use cases.
• FormReach AI-powered sales outreach automation tool that manages the full workflow from target list creation to AI-generated message composition and delivery, designed for sales and marketing teams seeking automated inbound/outbound prospecting.
• DX Consulting and Generative AI Seminars Professional advisory service supporting Japanese businesses on digital transformation (DX) initiatives, including generative AI adoption roadmaps, workflow improvement and automation proposals, and training seminars covering ChatGPT and Copilot implementation methods and concrete use cases.
• Contracted Development Services Custom software development services covering AI research and development that fuses academic-paper research with practical business system development, as well as web application conceptualization, design, UI/UX, and implementation for Japanese business clients.

Quantifiable outcome

• Significant improvement in business efficiency and productivity through AI chatbot and automation tools

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability4 records

Feature2 records

Partnerships

One partnership is on record.

• NVIDIA CorporationcoreTechnology or Integration · 31 July 2024N4合同会社 is certified as a partner company in NVIDIA's Inception Program, an AI startup support program. This partnership provides access to NVIDIA's latest GPU technologies and network resources, enabling accelerated development of generative AI-based services. The company can leverage NVIDIA's cutting-edge AI computing infrastructure for their product development.

Scale indicators2 records

Recent moves5 records

Expansion highlights5 records

Emerging players

• Instabase: US-based applied-AI platform for automating complex document and workflow tasks across enterprise functions. Closely comparable to N4's SolidChat and broader AI-driven knowledge/automation thesis, but operates internationally and at larger-enterprise scale.

Direct peers

• ELYZA Inc. Japanese LLM-focused AI company building enterprise-tuned language models and applied generative-AI solutions. Comparable to N4 as a domestic Japan AI vendor leveraging LLM technology to serve Japanese enterprise document/intelligence use cases.
• Stockmark Inc. Tokyo-based AI company focused on Japanese enterprise document/text intelligence and knowledge-AI applications. Directly comparable to N4's SolidChat, addressing similar Japanese enterprise RAG and document Q&A use cases for SMB and mid-market customers.
• KARAKURI Inc. Japanese AI company providing customer-support chatbots and generative-AI products for Japanese enterprises and SMBs. Directly comparable to N4 in offering a generative-AI chatbot/RAG product targeting operational efficiency improvements.
• Userlocal Inc. Japanese AI tooling company offering AI Messenger and other generative-AI features for SMB customer engagement. Comparable to both SolidChat (chatbot) and FormReach (lead/outreach automation) as a horizontal Japanese SMB AI vendor.
• PKSHA Technology: Listed Japanese AI/NLP platform company offering BEDORE chatbot and other conversational AI products to enterprise customers. Closely mirrors N4's SolidChat concept as a Japan-centric AI chatbot vendor serving business users with LLM-based interfaces.
• SATORI Inc. Japanese marketing automation platform helping B2B companies automate lead nurturing, email, and form-based outreach. Directly comparable to N4's FormReach product targeting Japanese B2B sales automation and contact-form-driven demand generation.
• ABEJA Inc. Japanese AI platform company offering enterprise AI/ML lifecycle products and DX services. Closely comparable to N4's combined product-plus-DX consulting model, addressing similar Japanese enterprise AI adoption needs.

Broad incumbents

• Salesforce: Global CRM leader whose Einstein and Sales Cloud products address the same sales-automation and AI-copilot needs as FormReach, and whose broader enterprise-AI roadmap overlaps with SolidChat. Represents the dominant incumbent N4 competes against at the high end of its Japanese enterprise motion.
• HubSpot: Global SMB-focused CRM, marketing, and sales-automation platform with AI content-generation features. Comparable to N4's FormReach in automating outbound/marketing workflows for SMB customers and to SolidChat in serving knowledge-management-adjacent use cases.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about N4