Google PM open-sources Always On Memory Agent, ditching vector databases for LLM-driven persistent memory

Google senior AI product manager Shubham Saboo has turned one of the thorniest problems in agent design into an open-source engineering exercise: persistent memory.This week, he published an open-source “Always On Memory Agent” on the official Google Cloud Platform Github page under a permissive MIT License, allowing for commercial usage.It was built with Google's Agent Development Kit, or ADK introduced last Spring in 2025, and Gemini 3.1 Flash-Lite, a low-cost model Google introduced on March 3, 2026 as its fastest and most cost-efficient Gemini 3 series model. The project serves as a practical reference implementation for something many AI teams want but few have productionized cleanly: an agent system that can ingest information continuously, consolidate it in the background, and retri