Femke Plantinga (@femke_plantinga)

Everyone's suddenly building company brains. Nobody agrees on what's inside one. 😵‍💫 So we opened up 9+ company brains to see how they're actually built. Every single one does the same four things: getting signals, remembering, dreaming & pruning, speaking & searching. 𝟭. 𝗚𝗕𝗿𝗮𝗶𝗻 Garry Tan's open...

We process the world through all of our senses, not just text. Your AI shouldn't be stuck with just one. Humans don't process information in just one format - we digest information with photos, graphs, charts, and more to understand the world. Why should our AI systems be limited to text-only retr...

BM25 powers billions of searches daily. But 90% of developers can't explain how it actually ranks results. 𝗕𝗠𝟮𝟱𝗙 is the algorithm that powers keyword search in most modern search engines. Here's a super simple breakdown of how BM25 works: • 𝗧𝗲𝗿𝗺 𝗙𝗿𝗲𝗾𝘂𝗲𝗻𝗰𝘆 (𝗧𝗙) counts how often your search terms ...

Everyone's talking about agentic AI, but are we all talking about the same thing? I've noticed people using "agentic architectures" and "agentic workflows" interchangeably. But they're actually quite different concepts that work together. Here's the distinction: 𝗔𝗴𝗲𝗻𝘁𝗶𝗰 𝘄𝗼𝗿𝗸𝗳𝗹𝗼𝘄𝘀 = The series o...