Character AI chat
Roleplay, group chat, and story worlds.
About harpy chat
Technology for digital human.
Character AI infrastructure for creative businesses.
Where we started
From digital human chat
to B2B software.
Our foundation is persona control, memory, scenarios, and safe interaction.
Creative workflow layer
Briefs, concepts, review, and approval.
ML Ops for customers
Model operations and backend systems for idol chat.
Technical advantage
We keep AI characters consistent.
Harpy keeps voice, memory, visuals, and behavior stable across long sessions and product surfaces.
Character consistency
Stable voice and memory.
Visual consistency
Repeatable face, body, and styling.
Brand safety
Partner rules, moderation, and approvals.
Current products
Character-focused chat products.
harpy.chat, astrsk.ai, and Idol chat use one technology base across character chat, agentic workflows, and fan products.
Team
A team built to deliver
reliable technology.
Strategy, AI research, and full-stack product engineering.
01
Jejoon Yoo
CEOConsulting experience with B2B strategy and customers.
02
Younduk Nam
AI ResearcherPhD in an AI-related field.
03
Full-stack Developer
Early startup experience at a company that reached IPO.
