Youngtak Jo
Selected projects in AI agent systems and ontology engineering.
8 of 8 projects
Apr 2026 – Present
The world's first general-purpose ontology OS — it builds a knowledge graph from markdown documents automatically, and an agent reasons over that graph
78.80% SWE-bench Verified resolve rate, all 500 tasks
Wrtn Technologies · Independent — solo product
Feb 2026 – Mar 2026
An AI consultation assistant that analyses the consultation in real time and does the charting for the clinician — a finalist at Anthropic's hackathon
230 / 13,000 Anthropic Opus 4.6 hackathon finalist — the only Korean finalist
Freelance and personal projects
Nov 2025 – Dec 2025
A pronunciation coach built on AI voice cloning and in-browser acoustic analysis that corrects articulation instead of reporting a score
422ms → 23ms time-axis alignment, 18× faster with zero inversion error
Freelance and personal projects
Aug 2022 – Sep 2025
An all-in-one operations platform for class and studio businesses — booking, payments, settlement, scheduling, CRM and marketing in one workflow
10,000+ cumulative users
Intergalactic Inc.
Feb 2025 – Jul 2025
An online meetup simulator in which several AI personas take part at once and adapt their responses to the conversation
3 variables — agenda, personas, layout — generate any scenario
Intergalactic Inc.
Jul 2022 – Sep 2022
One monorepo covering web, iOS and Android for a manufacturing execution system, which cut development and maintenance cost
Hansol PNS
Jun 2020 – Aug 2021
A CNN classifier and data pipeline for apparel categories whose definitions differ from storefront to storefront
90%+ category classification accuracy
Sewon Atos
Jan 2019 – Oct 2019
Hardware that turns piano practice into a rhythm game, built on MIDI control and an embedded system
2 single-board computers driving a light-diffusing acrylic LED interface
Personal project
No project matches that filter.