Summary
Jeff Su explains the differences between three categories of AI tools: chatbots, do-it-yourself (DIY) agents, and the newer personal agents. The video is aimed at people who already use ChatGPT, Claude, or Gemini and want to know whether Meta’s Muse, ChatGPT Dots, or xAI’s Grok bot are worth setting up.
Chatbots handle one-off tasks with no memory of earlier work. DIY agents, such as ChatGPT Work, Codex, Claude Code, and Gemini Spark, can read and update plain text files, so rules, preferences, and history persist between tasks. Using a health report example, Su shows an agent saving a new report, comparing it with five years of records, and updating a memory document. Personal agents go a step further by acting proactively, for instance offering a health summary the day before an annual checkup.
Su demonstrates his own DIY setup, a home folder of over a hundred text files he calls Jeff OS, connected to Notion, Google Calendar, Google Drive, and Gmail. A single prompt to plan a trip to Los Angeles pulls hotel preferences, visa requirements, friends living in the city, and calendar conflicts. He then shows how Muse offers a guided, out-of-the-box version of the same approach, with goals and system files that resemble a DIY agent’s folder structure.
📺 Source: Jeff Su · Published October 13, 2026
🏷️ Format: Deep Dive
