Muhayu
Category: AI in Education
South Korean AI company specializing in NLP-based plagiarism detection, AI-generated content verification, and HR tech solutions. Muhayu was founded in 2011. The company is led by Shin Dong-ho (신동호). Based in Seoul, South Korea. Team size: 51-200. Total funding raised: $11.3M. Latest round: Pre-IPO. Key investors include DSC Investment; Devsisters Ventures; STIC Ventures.
- Founded
- 2011
- Headquarters
- Seoul, South Korea
- Team size
- 51-200
- Total funding
- $11.3M
Value proposition
AI-powered document verification and HR assessment platform that detects plagiarism, AI-generated content, and automates recruitment evaluation using proprietary natural language understanding technology.
Products and solutions
CopyKiller (카피킬러) - AI plagiarism detection incl. 참고문헌 유효성 검증 (fake/hallucinated citation check), CopyKiller DIFF - character-level document compare, GPTKiller (GPT킬러) - AI-generated content detection, Prism (프리즘) - AI resume evaluation, Monster (몬스터) - AI conversational interview, CopyMonitor (카피모니터) - Japanese plagiarism/AI detection, BlindChecker, VisualChecker, DataFactory, CopyKiller 자격검증 (public-sector document verification)
Unique value
Only Korean company with integrated plagiarism detection AND AI-generated content detection (Detect GPT); 100 billion document comparison database; 99%+ GPT detection accuracy; 94% domestic university market share; first-mover in Korean-language AI content verification
Target customer
Universities (94% of Korean 4-year universities), K-12 schools, corporations (Lotte, LG, Emart, Nonghyup, Hana Bank), government/public institutions, research organizations
Industries served
Education (higher ed, K-12), Human Resources/Recruitment, Corporate, Government/Public Sector
Technology advantage
Proprietary NLU technology with 100B+ document comparison database; 15+ years Korean-language NLP data; sentence-level search; detectors for new AI models within ~2 weeks; 54 patents (THE VC); KTL Mark for 3 AI services; reference-validity / fake-citation detection expanding into Japan
How they differentiate
Superior Korean-language NLP vs global competitors like Turnitin; integrated plagiarism + AI content detection in one platform; 94% domestic university market share; B2B SaaS model with LMS integration; explainable AI approach showing detection rationale; HR tech expansion beyond plagiarism
Main competitors
Turnitin (global leader in plagiarism detection); KCI (Korea Citation Index, government-run); Grammarly (AI writing assistant with plagiarism detection)
Key partnerships
Mirae Asset Securities (IPO underwriter); DSC Investment; Devsisters Ventures; STIC Ventures; Korea Testing Laboratory (KTL); Partnerships with 85+ universities via CK Bridge (LMS-integrated plagiarism checking)
Notable customers
Seoul National University; Yonsei University; Korea University; Kyungpook National University; Sogang University; Hanyang University; Lotte; LG; Emart; Nonghyup; Hana Bank; 94% of Korean 4-year universities; 80+ Japanese institutions (via CopyMonitor)
Major milestones
2011: Founded & launched CopyKiller, 2018: Launched Prism/CopyKiller HR, 2020: Entered Japan with CopyMonitor, 2022: Launched Monster (AI interview, per official chronology), 2023: Launched GPTKiller, Nov 2023: ₩150억 Pre-IPO (DSC/Devsisters/STIC), 2024: Mirae Asset Securities as IPO underwriter, 2024 revenue ₩108.8억, May 2026: EDIX Tokyo 2026, Jul 2026: Kansai Education ICT展 — first Japan showcase of 참고문헌 유효성 검사, Still private (비상장) as of Sep 2026
Growth metrics
Revenue: ₩108.8억 (~$8.2M) in 2024 (Incruit/thebell audited); 3,485+ institutional clients; 13.45M+ users (official site); 100B+ internet content comparison DB; ~103 employees (THE VC/국민연금 as of Jun 2026); Bootstrapped until 2023 Pre-IPO; 2024 recorded ~₩36M operating loss after prior years of profitability
Market positioning
#1 plagiarism detection service in South Korea (94% of 4-year universities); Japan growing (80+ clients / 220K+ users via CopyMonitor; 92 JP universities cited for GPT detection as of 2024); China via CopyKiller China; KOSDAQ IPO still targeted for 2026 but H1 target slipped — still private (비상장) as of Sep 2026
Geographic focus
South Korea (dominant), Japan (growing via CopyMonitor), China (early entry via CopyKiller China), Southeast Asia (planned expansion)
Patents and IP
54 patents (THE VC as of ~Aug 2026; official site lists 24 registered); KTL Mark certification for 3 AI services (CopyKiller, GPTKiller, VisualChecker)
About Shin Dong-ho (신동호)
Ex-Engineer in search/NLP field for 15+ years; Seoul National University (Computer Engineering). Founded Muhayu in 2011 after career in search technology development.
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Official website: https://www.muhayu.com