Sigrid Jin (instructkr)
A practitioner-first community for South Korea's AI researchers, engineers, and product teams, building better harness tools and high-performance open-source AI infrastructure.
Founding Story
InstructKR started as a community for South Korean AI practitioners to share technical lessons and benchmarks. It gained global recognition after founder Sigrid Jin created 'claw-code', a record-breaking Rust-based developer toolset.
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Leadership
Founders
Sigrid Jin (Jin Hyung Park)
Former Software Engineer at DSRV (2022-2023), OpenAI Codex Ambassador, member of Prompt & Pray staff at Sionic AI, and a 2-time dropout from the University of British Columbia (UBC).
Executive Team
Sigrid Jin (Jin Hyung Park)
Founder and Leader
Visionary developer known for the 'claw-code' phenomenon and building the Korean AI practitioner community.
Business Model
Revenue Model
Primarily community-driven through GitHub Sponsors and strategic sponsorships from AI companies (e.g., Sionic AI).
Pricing Tiers
Support open-source development of Korean AI tools.
Target Markets
- AI Researchers
- Software Engineers
- AI Product Teams in South Korea
- LLM Evaluation
- AI Engineering Workflows
- Information Retrieval Optimization
- Community Education
- Upstage
- KISTI
- LG AI Research
- Sionic AI
History & Milestones
Released 'claw-code' (a Rust-based rewrite of leaked Claude Code), which became the fastest repository in history to surpass 100,000 GitHub stars, reaching the milestone in under 24 hours.
Hosted InstructKR Dev Days for Ultrathink Engineers in Pangyo, South Korea.
Hosted the Instruct.KR 2025 December Meetup focusing on AI Agents in Seoul.
Partnered with Sionic AI to host the 'Sionic x InstructKR Hackathon'.
Launched LogicKor, the leading multi-domain reasoning benchmark for Korean Large Language Models (LLMs).
1 AI Tool by Sigrid Jin (instructkr)
A clean-room Python and Rust rewrite of the Claude Code agent harness, created after Anthropic accidentally leaked 512,000 lines of Claude Code source via an npm.