Perplexity's Brain is a self-improving memory layer that tracks what the AI agent Computer did, what worked, and what failed.

One July afternoon in 2024, Ryan Williams set out to prove himself wrong. Two months had passed since he’d hit upon a startling discovery about the relationship between time and memory in computing.

Imagine interacting with an AI assistant that not only remembers your preferences but also learns from past conversations to improve its responses over time. Whether it’s recalling your favorite ...