GUIDES · CORTEX
What is a personal digital twin?
A personal digital twin is a queryable model of how one specific person thinks, decides, and communicates, available when they cannot be present. Cortex builds that twin as psychology-first alternate intelligence, not as a generic chatbot.
Digital twin vs chatbot
A chatbot answers from instructions and documents. A personal digital twin answers from a model of one person: values, decision heuristics, tone, and known tensions.
Cortex stores that model as a living brain and exposes it through chat, REST, MCP, and voice replies at makecortex.com.
What Cortex captures
Psychology-first interviews on how you decide and where you will not bend.
Writing, files, and voice notes that teach communication style.
Identity, judgment, and knowledge kept as separate layers so answers stay attributable.
When a twin is useful
Founders who cannot take every investor or hiring question personally.
Experts who want their methodology available without selling every hour.
Teams that need a key person's reasoning when that person is not in the room.
Build yours
Start at signup, read the canonical reference, or compare approaches.