Where do your AI tokens go?
We typed 11 words and the agent used 150,194 tokens. About 99% went to re-reading, and the answer itself was the small part. Here is why, and the habits that keep it lean.
Read the note →A notebook on AI, automation, finance & learning
Thinking out loud about AI, automation, finance and learning.
Practical, tested, no hype. Real examples, explained step by step, so you can try them yourself.
Not a better prompt. Better context.
Eleven words, and the quote was made, checked and ready to send. The clever part wasn't the prompt. It was a folder with four files. Here is the whole setup, step by step.
Atlas: The ChatGPT Browser
OpenAI's browser puts ChatGPT next to the page you're reading. What it does, what changes in a normal day, and why browsers are turning into copilots.
The Underrated Advantage of Speaking to Your AI
When we speak instead of type, we give the AI more context without trying. Why that often helps, and when the keyboard is still the better tool.
NotebookLM: The AI Tool You Might Not Be Using Yet
A Google tool that only works with the material you give it: notes, papers, transcripts. What it does, what changed in November 2025, and how to use it to learn.
Who's behind the corner
Alejandro Biurrun
He works where finance, processes and technology meet: financial foundations for growing companies, an ERP connected to the business, and AI with human judgement. The rigour comes from seven years in a family office.
The Thinking Corner is where he tests things in the open and writes down what works.
psst Short reels on Instagram, longer notes here.