YouTube will let you build your own algorithm with AI
YouTube users can now prompt-engineer their own algorithm. Type what you want to watch; Gemini builds the feed.

Why it matters
A major platform is shifting algorithmic control from the system to the user via natural-language interface — a significant UX and product pattern that practitioners building recommendation systems should study, and a bellwether for how generative AI is reshaping feed/discovery products.
The key facts
10 to knowYouTube launches custom feeds powered by Gemini
Users describe content preferences in natural language
AI generates personalized feed based on user request
Represents shift from opaque algorithmic curation to user-directed feed building
Feature availability: YouTube (date not specified in article; inferred as current/rolling)
YouTube launches custom feeds feature powered by Gemini
Users describe desired content in natural language
Gemini generates personalized feed based on user text input
Feature represents shift from platform-controlled algorithm to user-directed AI curation
Published September 2026
Go to the source
TechCrunch AItechcrunch.com
Publisher excerpt: YouTube’s new custom feeds let users describe the videos they want to see in their own words, then use Gemini to build a personalized feed around the request.