Updates OurBigBook Project Update March 2025 by 
Ciro Santilli 40 Created 2025-11-05 Updated 2026-01-30
Ciro Santilli 40 Created 2025-11-05 Updated 2026-01-30This is a summary of the status of the OurBigBook Project, focusing notably on the past 9 months that I've been able to devote fully to it starting June 2024 notably due to the anonymous 1000 Monero donation and other supporters.
I have 3 months left and after unless some crazy person gives more money, I'll go back to some generic programming job that could be done by many other people so that my wife won't kill me. Hopefully I'll find something in quantum computing or AGI research this time that is not too boring, but we'll see.
I should also note that I have raised my requirement for a second year full time from 100k USD to 200k USD, such that there are about only 144k USD missing as of writing, a bargain. See also Section "Sponsor Ciro Santilli's work on OurBigBook.com". I have also set a 2M USD retirement goal in case someone wants to free me to lurk after university students for the rest of my life. Creepy.
The reason for this increase is partly because I'm jealous watching my university peers getting relatively richer and richer than me. More seriously though, as I'm likely going to be looking for a job soon, I don't want to scare employers off too much thinking that it is likely that I'll be leaving in a few months too easily. Plus inflation and the natural lack of security that such endeavour brings.
Welcome to my home page!
Welcome to my home page!
Updates Getting banned from Project Euler by Ciro Santilli 40 Created 2025-10-27 Updated 2025-11-05
Ciro Santilli 40 Created 2025-10-27 Updated 2025-11-05I have been banned from Project Euler for life, and cannot login to my previous account projecteuler.net/profile/cirosantilli.pn
The ban happened within 12 hours of me publishing a solution to Project Euler problem 961 github.com/lucky-bai/projecteuler-solutions/pull/94 which was one-shot by a free GPT-5 account as MathArena had alerted me to being possible: matharena.ai/?comp=euler--euler&task=4&model=GPT-5+%28high%29&run=1
The problem leaderboard contains several people solved the problem within minutes of it being released, so almost certainly with an LLM.
The "secret club" mentality is their only blemish, and incompatible with open science.
They should also make sure that LLMs don't one shot their future problems BEFORE publishing them!
ARC-AGI is a black hole for early retired tech and finance bros by Ciro Santilli 40 Created 2025-10-27 Updated 2025-12-13
Ciro Santilli 40 Created 2025-10-27 Updated 2025-12-13People who do cool open tech stuff when don't need money anymore are awesome:
- François Chollet, project founder: www.linkedin.com/in/fchollet/ 9 years at Google from 2015 to 2024. He founded ARC while he was still at Google though, so maybe doesn't count
- Cristiano Calgano from cristianoc/arc-agi-2-abstraction-dataset. Imperial College London researcher who founded a formal verification company and sold it to Facebook where he staid for 7 years
- Benjamin Crouzier from Tufa Labs
Benjamin has a masters in Computer Science and applied ML to quant finance previously, tufalabs.ai/team.html mentions:
Contains 120 DSL implementations for the
From another awesome retired tech bro that does this project for fun.
Pinned article: Introduction to the OurBigBook Project
Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
Intro to OurBigBook
. Source. We have two killer features:
- topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculusArticles of different users are sorted by upvote within each article page. This feature is a bit like:
- a Wikipedia where each user can have their own version of each article
- a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
Figure 1. Screenshot of the "Derivative" topic page. View it live at: ourbigbook.com/go/topic/derivativeVideo 2. OurBigBook Web topics demo. Source. - local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 3. Visual Studio Code extension installation.
Figure 4. Visual Studio Code extension tree navigation.
Figure 5. Web editor. You can also edit articles on the Web editor without installing anything locally.Video 3. Edit locally and publish demo. Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.Video 4. OurBigBook Visual Studio Code extension editing and navigation demo. Source. 
- Infinitely deep tables of contents:
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact