Select Star
Select Star is a Seoul-based AI data and evaluation platform company that builds custom training datasets, licenses curated datasets, and provides AI reliability validation and red teaming services for Korean enterprises, AI labs, and government sovereign AI initiatives.
- Company typePrivate
- Founded2022
- HeadquartersSeoul, South Korea
- Headcount101–250
- GTM typeB2B
- OfferingSoftware
What Select Star does
Select Star is a Seoul-based AI data and evaluation platform company founded by KAIST graduates, operating a dual-pillar product portfolio spanning Data and AI Evaluation. The Data pillar includes a licensed Dataset Store marketplace, a custom Data Build service that has completed 400+ projects producing 250M+ data records across text, audio, image, video, code, and multimodal modalities, and a Data Voucher program aligned with Korean government procurement. The Evaluation pillar centers on Datumo Eval, an automated AI reliability validation platform positioned as Korea's first such solution, augmented by STAR-Teaming — an automated red-teaming framework accepted to ACL 2026 Findings with a 74.5% attack success rate on the HarmBench benchmark — and professional red teaming and consulting services.
The company serves 330+ enterprise customers across Korean conglomerates (Samsung Electronics, Samsung Display, LG CNS, SK Telecom, Lotte Innovate), AI labs (Upstage, Scatter Lab, CNAI), system integrators, and government sovereign AI initiatives. Its go-to-market is sales-led and consultation-based, with pricing not publicly disclosed and revenue streams spanning professional services, platform subscriptions, and data monetization. Select Star is a data partner in the SK Telecom-led consortium selected by Korea's Ministry of Science and ICT for the Proprietary AI Foundation Model Development Project and co-hosts the Global AI Red Team Challenge at MWC 2026 with GSMA.
The business is venture-backed, with approximately $32M raised across six funding rounds from 2019 through 2025, and holds SOC2 Type 2 and KAI certifications. A wholly-owned Silicon Valley subsidiary is planned for global expansion. The company is led by CEO Kim Se-yeop and currently operates with 51-100 employees.
Select Star firmographics
Firmographics- Name
- Select Star
- Legal name
- 셀렉트스타 주식회사 (SELECTSTAR Inc.)
- Website
- https://selectstar.ai
- Company type
- Private
- Founded year
- 2022
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Select Star is a Seoul-based AI data and evaluation platform company that builds custom training datasets, licenses curated datasets, and provides AI reliability validation and red teaming services for Korean enterprises, AI labs, and government sovereign AI initiatives.
- Ownership category
- akta.pro rank
Select Star industry classification
Industry- Product category
- AI Training Data and Evaluation Platform
- akta.pro primary industry
- Survey/Panel-Based Lead Capture & Co-Registration Services (BPAFAKAN)
Keywords
Where Select Star is headquartered
LocationHeadquarters
- HQ city
- Seoul
- HQ country
- South Korea
- HQ region
- Asia
Offices2 records
Markets served
Select Star business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure
Revenue model
- AI Data Construction Services: Provides crowdsourcing and semi-automated labeling technology for collecting and processing AI training data, serving corporate clients with dataset building services
- AI Evaluation/Safety Validation: AI reliability verification consulting and Datumo Eval platform services for enterprise AI validation
- AI Red Teaming Services: Red teaming services and STAR-Teaming framework integration for AI safety testing
- Dataset Store: Licensed high-quality datasets including expert Q&A, books, press questions, broadcast video/voice, and LLM safety evaluation data
Go-to-market motion1 record
Distribution channels3 records
Marketing channels5 records
Select Star product offering
Product offeringCore offering
Select Star is a Korean AI data and evaluation company that builds, curates, and licenses high-quality training datasets, and provides AI reliability assessment and red teaming services. Its offerings include the Datumo Eval automation platform for LLM validation, the Datumo enterprise validation platform, the STAR-Teaming automated red-teaming framework, and a Dataset Store of pre-licensed datasets, serving enterprise AI teams, telecom providers, and government sovereign AI initiatives.
Product overview
Select Star operates a dual-pillar AI product portfolio spanning Data and Evaluation. The Data pillar includes Dataset Store (marketplace for licensed datasets), Data Build (custom dataset construction with 400+ projects completed), and Data Voucher (government voucher program). The Evaluation pillar centers on Datumo Eval - Korea's first automated AI reliability validation platform - complemented by AI Red Team services, STAR-Teaming (ACL 2026-accepted automated red-teaming framework), and AI-MASTER. The company serves 330+ enterprise clients including Samsung, SK Telecom, LG CNS, and major Korean AI labs, with datasets published at top-tier conferences (NeurIPS, EMNLP, CVPR).
Differentiator
Problem solved
Functional benefit
Brands
- Datumo Eval: AI reliability verification automation platform for LLM services
- Datumo Platform
- STAR-Teaming
- AI-MASTER
Products and services
- Datumo Eval Korea's first AI reliability validation automation solution for LLM services; supports configurable evaluation workflows and real-time monitoring of generative AI deployments. Targeted at enterprise AI deployers and system integrators needing safety and reliability verification.
- Datumo Platform Enterprise AI validation platform incorporating the STAR-Teaming framework for red teaming and reliability assessment; used across manufacturing, system integration, IT services, and Korean government sovereign AI initiatives.
- STAR-Teaming Automated red-teaming framework for AI safety testing; achieves 74.5% attack success rate on HarmBench benchmark, outperforming AutoDAN-Turbo by 13.5 percentage points. Accepted to ACL 2026 Findings.
- AI Red Team Service Professional red teaming service for AI model safety assessment, vulnerability identification, and adversarial testing; includes the Global AI Red Team Challenge co-hosted with GSMA at MWC 2026.
- Data Build Large-scale custom dataset construction service with systematic data collector recruitment, training, and quality management; has completed 400+ projects and built 250M+ data records for enterprise clients.
- Dataset Store Licensed pre-built dataset catalog offering curated datasets covering expert Q&A, books, press, broadcast video/voice, and LLM safety evaluation data, available for purchase by enterprise AI teams.
- Data Voucher Government-supported data voucher program that helps Korean enterprises procure AI datasets and validation services through subsidized funding.
- Validation Consulting
Quantifiable outcome
- 74.5% attack success rate on HarmBench benchmark
- +3 more outcomes
Companies that use Select Star
Customer profileNamed customers16 records
Segments5 records
Ideal customer profiles3 records
Select Star technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability13 records
Feature4 records
Select Star partnerships and signals
Strategic signalPartnerships
Nine partnerships are on record, tiered flagship, core and foundational.
- GSMAflagshipCo-hosted the 'Global AI Red Team Challenge' at MWC 2026 in Barcelona for the second consecutive year. The event attracted approximately 130 global AI experts and developers with 78 participants submitting results. SK Telecom's A.X K1, LG Uplus's ixi-GEN, AT&T's Ask AT&T, and NetoAI's Tslam were tested using SelectStar's Datumo platform.
- SK Telecom ConsortiumcoreSelectStar is a data support partner in SK Telecom-led consortium selected by Korea's Ministry of Science and ICT for the Proprietary AI Foundation Model Development Project. The consortium includes SKT, Krafton, Rebellions, 42dot, Selectstar, Liner, Seoul National University, and KAIST. SelectStar is responsible for building specialized post-training datasets including AI foundation model post-training data, red teaming data, and multimodal data for language models.
- LinercorePart of the SKT Consortium contributing to Korea's sovereign AI foundation model. Liner serves over 12 million users across 220 countries and is contributing its accuracy technologies (SimpleQA benchmark score of 95.3) to enhance the Korean foundation model's reliability.
- KraftoncorePart of SKT Consortium for Korea's sovereign AI foundation model. Krafton contributes architectural design, learning algorithm research, voice and image synthesis technology, and AI Agent expertise.
- 42dotcorePart of SKT Consortium for Korea's sovereign AI foundation model. 42dot leverages its proprietary LLM technology to develop in-vehicle AI agent service targeting deployment in Hyundai Motor Group mass-production vehicles by 2026.
- RebellionscorePart of SKT Consortium for Korea's sovereign AI foundation model. Contributes AI technology expertise.
- Seoul National UniversitycorePart of SKT Consortium for Korea's sovereign AI foundation model. Academic partner contributing research expertise.
- KAISTcorePart of SKT Consortium for Korea's sovereign AI foundation model. Academic partner contributing research expertise.
- KAISTfoundationalFounders of SelectStar are KAIST graduates; company maintains connection with KAIST through consortium participation.
Scale indicators7 records
Recent moves6 records
Expansion highlights6 records
Select Star competitors and assessment
Company assessmentDirect peers
- Scale AI: Scale AI is a leading AI data labeling and evaluation platform serving enterprises with training data construction, model evaluation, and AI safety testing. It is a direct competitor to Select Star's data labeling and Datumo evaluation offerings, operating at significantly larger scale globally.
- Appen: Appen is a global provider of high-quality training data for AI and machine learning, offering data collection, annotation, and evaluation services. It competes directly with Select Star's data construction and crowdsourced labeling services across multiple modalities.
- Labelbox: Labelbox provides a data-centric AI platform for training data creation, management, and evaluation. It competes with Select Star's data labeling platform and Datumo evaluation offerings for enterprise AI teams.
- Surge AI: Surge AI is an AI data labeling platform specializing in high-quality training data for foundation models, including RLHF and evaluation datasets. It is a direct competitor in the premium AI training data market where Select Star operates.
- Sama: Sama provides AI data annotation and validation services with a focus on high-quality training data for computer vision and NLP applications. It competes directly with Select Star's data labeling and validation services for enterprise AI teams.
- Roboflow: Roboflow provides a computer vision data platform for image and video annotation, model training, and deployment. It overlaps with Select Star's image labeling and autonomous systems data services (e.g., Newbility robot segmentation).
Emerging players
- Snorkel AI: Snorkel AI offers a data-centric AI platform with programmatic labeling and weak supervision capabilities. It represents an emerging alternative approach to Select Star's crowdsourced labeling, with potential overlap in enterprise AI training data workflows.
- Datasaur: Datasaur is an NLP data labeling platform offering annotation tools and managed services for AI training data. It represents an emerging competitor in the text and NLP labeling space where Select Star has built Korean language expertise.
- Encord: Encord provides a data-centric AI platform for data management, annotation, and model evaluation. It is an emerging player in the AI data and evaluation space with overlapping capabilities to Select Star's Datumo platform and data labeling services.
Broad incumbents
- Telus International (Lionbridge AI): Telus International (formerly Lionbridge AI) provides large-scale AI training data services including data collection, annotation, and validation across multiple modalities. It is a broad incumbent competing with Select Star's data construction services at enterprise scale.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
Select Star social profiles
Digital presenceSelect Star compliance and trust
Trust signalCompliance1 record
Select Star financial estimates
Financial estimateRevenue estimate
Valuation estimate
Select Star leadership team
Management profileNumber of profiles
Profiles3 records
Select Star subsidiaries and ownership
Company hierarchySubsidiaries1 record
Select Star funding detail
Funding detailFunding overview
Funding rounds6 records
Investors19 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Select Star M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Select Star
What does Select Star do?
Select Star is a Korean AI data and evaluation company that builds, curates, and licenses high-quality training datasets, and provides AI reliability assessment and red teaming services. Its offerings include the Datumo Eval automation platform for LLM validation, the Datumo enterprise validation platform, the STAR-Teaming automated red-teaming framework, and a Dataset Store of pre-licensed datasets, serving enterprise AI teams, telecom providers, and government sovereign AI initiatives.
Is Select Star a public or private company?
Select Star is a private company. It is classified as venture growth investor backed and is currently operating.
When was Select Star founded?
Select Star was founded in 2022. It employs 101 to 250 people.
Where is Select Star based?
Select Star is headquartered in Seoul, South Korea, in the Asia region.
How does Select Star make money?
Four revenue lines are on record. AI Data Construction Services are the primary driver. The others are AI Evaluation/Safety Validation, AI Red Teaming Services and dataset Store.
Who are Select Star's main competitors?
Direct peers on record are Scale AI, Appen, Labelbox, Surge AI, Sama and Roboflow. Emerging players are Snorkel AI, Datasaur and Encord. Telus International (Lionbridge AI) is listed as a broad incumbent.
Does Select Star have an API?
No public API is recorded for Select Star.
What industry is Select Star in?
Select Star's product category is AI Training Data and Evaluation Platform. Its primary akta.pro industry code is BPAFAKAN, Survey/Panel-Based Lead Capture & Co-Registration Services.