Datumo
Category: AI Infrastructure
Datumo is a Seoul-based AI company providing a full-stack LLM evaluation and reliability verification platform, helping enterprises test, monitor, and improve AI model safety without requiring technical expertise. Datumo was founded in 2018. The company is led by David (Seyeob) Kim. Based in Seoul, South Korea. Team size: 101-500. Total funding raised: KRW 43.4 billion. Latest round: Series B. Key investors include Salesforce Ventures, KB Investment, ACVC Partners, SBI Investment, Samsung Venture Investment, Mirae Asset Venture Investment, Flux Ventures, Shinhan Venture Investment.
- Founded
- 2018
- Headquarters
- Seoul, South Korea
- Team size
- 101-500
- Total funding
- KRW 43.4 billion
Value proposition
Datumo enables organizations to build and deploy trustworthy AI by providing an automated, no-code LLM evaluation platform (Datumo Eval) that generates test data, checks for unsafe/biased/incorrect responses, and monitors model performance — designed for non-developers on policy, trust & safety, and compliance teams.
Products and solutions
Datumo Eval: An automated end-to-end LLM evaluation platform that generates domain-specific test datasets and evaluates model responses for safety, bias, and accuracy using agentic flow technology., AI Red Team: Automated red-teaming solution for identifying vulnerabilities in AI systems., Dataset Store: Licensed, high-quality AI training datasets including premium datasets crawled from published books., AI Data Consulting: Expert guidance on data strategy, planning, refinement, and AI development.
Unique value
Datumo differentiates through its no-code LLM evaluation platform (Datumo Eval) designed for non-technical users, proprietary agentic flow for automated test generation, licensed book-crawled datasets offering rich structured human reasoning, and Asia's first Red Team Challenge hosted with the Korean government.
Target customer
Datumo targets enterprises deploying LLMs, particularly non-technical teams such as policy, trust & safety, and compliance departments that need no-code tools to evaluate AI model safety, bias, and accuracy.
Industries served
Finance, Healthcare, Legal, E-commerce, Education, Customer Service
Technology advantage
Datumo's key advantages include: (1) No-code LLM evaluation platform for non-technical users, (2) Proprietary agentic flow for automated test dataset generation, (3) Licensed book-crawled datasets with rich structured human reasoning, (4) 47 patent filings with 16 registered, (5) Asia's first Red Team Challenge partnership with Korean government, (6) Salesforce Ventures backing providing enterprise credibility and access.
How they differentiate
Datumo differentiates through its no-code LLM evaluation platform for non-developers, proprietary licensed book-crawled datasets, full-stack approach from data annotation to evaluation, and strong South Korean market presence with government partnerships (hosted Asia's first Red Team Challenge with Korean government).
Main competitors
Scale AI, Galileo, Arize AI
Key partnerships
Salesforce Ventures, KB Investment, ACVC Partners, SBI Investment, SK Telecom (Sovereign AI Foundation Model Initiative), Ministry of Science and ICT Agentic AI Alliance — Safety and Trust Division
Notable customers
Samsung, Samsung SDS, LG Electronics, LG CNS, Hyundai, Naver, SK Telecom
Major milestones
Raised $15.5M Series B from Salesforce Ventures, KB Investment, ACVC Partners, and SBI Investment (Aug 2025)., Rebranded from SelectStar to Datumo to reflect expanded focus on LLM evaluation., Evolved from AI data labeling to full-stack LLM evaluation platform (Datumo Eval)., Hosted Asia's first Red Team Challenge at 2024 AI Safety Conference with Korean government., Published KorNAT paper at ACL 2024 — first LLM evaluation dataset on Korean social values., Established Silicon Valley office (March 2025)., Filed 47 patent applications with 16 registered patents as of 2024., Surpassed $6M revenue in 2024 with 300+ clients.
Growth metrics
Datumo serves over 300 clients in South Korea and generated approximately $6 million in revenue in 2024. The company has 150 employees in Seoul and established a Silicon Valley office in March 2025.
Market positioning
Datumo is positioning itself as a significant challenger to Scale AI in the LLM evaluation and data market. Backed by Salesforce Ventures, the company targets enterprise clients adopting LLMs, leveraging its South Korean base with a newly established Silicon Valley office for US expansion.
Geographic focus
Datumo is headquartered in Seoul, South Korea, with a strong focus on the South Korean market. The company established a Silicon Valley office in March 2025 and is expanding operations across South Korea, Japan, and the United States.
Patents and IP
Datumo has filed 47 patent applications in total and registered 16 patents as of 2024. Published KorNAT paper at ACL 2024 — the first LLM evaluation dataset on Korean social values and common knowledge.
About David (Seyeob) Kim
Former AI researcher at Korea's Agency for Defense Development. Co-founded Datumo (formerly SelectStar) alongside five KAIST alumni in 2018.
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Official website: https://datumo.com