How LLMs Actually Work: What Happens When You Talk to ChatGPT
A no-BS breakdown of what happens inside ChatGPT when you type a message. Tokenization, embeddings, transformers, attention — explained like I'd explain it to a smart friend over coffee.
I'm Nakul — product builder based in Singapore.
I co-founded MobiChemist, a health-tech startup that got acquired by Tata 1mg. Then went deep into Web3 — led product and growth at Web3Auth, taking it from $0 to multi-million ARR. Now I'm a PM at MetaMask — the world's most-used crypto wallet.
The pattern across all of it? The product was never the hard part. Getting it in front of people was. Distribution beats building, every time.
This site is where I think out loud — about product, growth, distribution, and building things that people actually use.

A no-BS breakdown of what happens inside ChatGPT when you type a message. Tokenization, embeddings, transformers, attention — explained like I'd explain it to a smart friend over coffee.
In a world where any product can be built with AI in a weekend, the real moat is getting it in front of people. Here's why I'm going all-in on distribution.