What Yellow Blue does

Yellow Blue Inc. (株式会社イエローブルー) is a Tokyo-based AI translation startup founded in August 2025 by Rei Kuroda, a former executive at Sumitomo Corporation and Dream Incubator. The company develops and operates BLUE ONE, a multilingual multi-agent AI translation SaaS that automates business document translation across 28 languages, with context-aware terminology handling, layout preservation, image translation, and API integration. Its technical differentiator is a proprietary in-house multi-agent platform designed for enterprise multilingual workflows, deployed on Google Cloud Platform infrastructure certified to ISO 27001 and SOC 2 standards, with same-day configurable data deletion.

The company operates a dual-track business model: a self-serve SaaS subscription distributed product-led through blue1.app, and a Forward Deployed Engineer (FDE) professional services line in which strategy consultants paired with elite AI engineers embed in client operations to deliver bespoke AI solutions. Target customer segments include TSE Prime listed trading houses and manufacturers, patent and IP firms, strategy consulting firms, and LMS/education providers. Documented client outcomes include 90% workload reduction for a strategy consultancy's global team, translatability of 30 years of previously unreadable patent archives, and an estimated ¥120 million in annual cost savings for a 100-person organization.

As of April 2026 the company had raised JPY 70 million in seed funding, employed between 1 and 10 people, officially launched BLUE ONE in March 2026, and released the image translation feature in April 2026. The founding team combines strategy-consulting executives with Kaggle Master and Kaggle Competition Grandmaster AI engineers, holds patents in deep learning and manga translation AI systems, and maintains an informal knowledge exchange relationship with Anthropic that has provided public-relations visibility.

Name

Yellow Blue

Legal name

Yellow Blue Inc.

Website

https://yellowblue1.com

Company type

Private

Founded year

2025

Operating status

Operating

Headcount range

1–10 employees

Short description

Yellow Blue is a Tokyo-based AI startup that develops BLUE ONE, a multilingual multi-agent SaaS for automated business document translation across 28 languages, sold to enterprises and professionals via self-serve subscription and a Forward Deployed Engineer consulting line.

Ownership category

akta.pro rank

Product category

Machine Translation Software

NAICS

Translation and Interpretation Services (54193), Software Publishers (513210)

SIC

Services-Computer Programming Services (7371), Services-Computer Integrated Systems Design (7373)

akta.pro primary industry

Multilingual/Translation Communication Apps (BPAMACAJ)

akta.pro secondary industries

AI Application Enablement Platforms (Copilot/Agent Frameworks, SDKs) (HDAEANAJ), Enterprise Foundation Model Integration & APIs (Connectors, Governance, Deployment) (HDAAACAO), AI/ML Engineering & Model Development Services (BPAEAHAF)

Keywords

• AI translation software
• Multilingual document translation
• Machine translation platform
• Enterprise translation services
• Context-aware translation

Headquarters

HQ city

Setagaya

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. BLUE ONE SaaS Subscription: Subscription-based AI translation service offered as SaaS, providing automated business document translation with 28 language support, layout preservation, and image translation capabilities
2. FDE Professional Services: Forward Deployed Engineer model providing strategy consulting combined with AI implementation services. Strategy consultants identify problems, elite AI engineers implement solutions tailored to client-specific challenges.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

Yellow Blue develops and operates BLUE ONE, a multilingual multi-agent AI SaaS translation platform that automates business document translation across 28 languages with context-aware AI, layout preservation, image translation, and API integration. The company also offers a Forward Deployed Engineer (FDE) service pairing strategy consultants with AI engineers to deliver custom AI implementations for enterprise clients.

Product overview

Yellow Blue operates two distinct business lines: (1) Blue One — the company's core AI multilingual SaaS platform, and (2) FDE (AI Solutions) — a forward-deployed engineering consulting service. Blue One is the primary product, a multilingual multi-agent AI translation platform offering automated business document translation across 28 languages with layout preservation, context-aware AI, and API integration capabilities. The FDE service complements Blue One by providing bespoke AI product development for clients with specialized needs that go beyond the SaaS offering.

Differentiator

Problem solved

Functional benefit

Brands

• BLUE ONE: AI-powered multilingual business document translation platform supporting 28 languages with layout preservation and context-aware AI translation capabilities.

Products and services

• BLUE ONE AI-powered multilingual SaaS translation platform that automates business document translation across 28 languages with context-aware AI translation, layout preservation, image translation, and API integration. Targets enterprise professionals and TSE Prime trading houses, manufacturers, patent firms, and professional service firms requiring translation quality equivalent to professional human translators at SaaS speed.
• Forward Deployed Engineer (FDE) / AI Solutions Consulting and implementation service pairing strategy consultants with elite AI engineers (Kaggle Masters/Grandmasters) to build custom AI products tailored to specific client operational challenges, from strategy through implementation to measurable outcomes. Serves enterprise clients whose specialized needs exceed the BLUE ONE SaaS offering.

Quantifiable outcome

• 90% workload reduction for strategy consultancy's global project team
• +2 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

AI capability7 records

Feature4 records

Partnerships

One partnership is on record.

• AnthropicminorOthers · 1 January 2025Informal knowledge exchange relationship with Anthropic headquarters for translation model discussions. Company representative Rei Kuroda featured in Anthropic's Claude 3.5 launch as the only Japanese interviewee. Relationship provides credibility and industry validation.

Scale indicators6 records

Recent moves5 records

Expansion highlights6 records

Broad incumbents

• Microsoft Translator: Enterprise translation API and integration across Microsoft 365, Teams, and Azure. Represents the broad-incumbent threat of foundation-model translation bundled into incumbent enterprise productivity suites.
• Google Translate: Default free-tier AI translation service from Google with massive language coverage and Workspace distribution. Sets the price/quality baseline that enterprise-focused players like Yellow Blue must differentiate against on security, terminology, and document handling.
• Lionbridge: Global language services and AI translation provider serving enterprises across content, gaming, and life sciences. Comparable on enterprise translation services and AI augmentation, but with a much broader portfolio and global footprint than Yellow Blue.
• RWS Group: Large language services and translation technology provider serving regulated industries including IP, life sciences, and legal. Comparable on enterprise translation for patent and IP verticals, but operates as a broad incumbent rather than AI-native startup.

Direct peers

• Smartling: Enterprise translation management and AI translation platform serving content, marketing, and product localization needs. Comparable as a SaaS-first translation platform with enterprise workflow integration and AI/automation focus.
• Unbabel: AI-powered translation platform combining LLM translation with human post-editing for enterprise customer support, legal, and content workflows. Directly comparable as an AI-translation-meets-services hybrid targeting global enterprises.
• DeepL: Premium AI translation SaaS widely regarded as the quality leader for European enterprise translation. Most direct competitor to BLUE ONE in serving professional and enterprise translation workflows with API and document capabilities.
• Phrase: Cloud-based translation management platform (formerly Memsource) providing AI translation, TMS, and localization automation for enterprises. Comparable in combining AI translation quality with enterprise workflow integration.
• Lengoo: AI-powered translation services platform combining custom-trained neural translation models with human post-editing for enterprise customers. Closely comparable as an AI-translation-plus-services hybrid targeting professional and regulated industries.
• Lokalise: Translation management SaaS for product, marketing, and software localization with AI-assist features. Comparable in targeting enterprises needing automated, context-aware multilingual content pipelines.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds1 record

Investors1 record

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 Yellow Blue