Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory across sessions with a self-hosted knowledge graph engine.

Official code repo for the O'Reilly Book - "Hands-On Large Language Models"

Library of deep learning models and datasets designed to make deep learning more accessible and accelerate ML research.

The best ChatGPT that $100 can buy.

AI agents running research on single-GPU nanochat training automatically

In-depth tutorials on LLMs, RAGs and real-world AI agent applications.

Learn Python language for beginners in Data Engineering and Data Analytics

[WIP] Resources for AI engineers. Also contains supporting materials for the book AI Engineering (Chip Huyen, 2025)

12 weeks, 26 lessons, 52 quizzes, classic Machine Learning for all

Data Engineering Zoomcamp is a free 9-week course on building production-ready data pipelines. The next cohort starts in January 2026. Join the course here 👇🏼

A curated list of 100+ libraries and frameworks for AI engineers building with LLMs

"Context engineering is the delicate art and science of filling the context window with just the right information for the next step." — Andrej Karpathy. A frontier, first-principles handbook inspi…

100+ AI Agent & RAG apps you can actually run — clone, customize, ship.

Course to get into Large Language Models (LLMs) with roadmaps and Colab notebooks.

Anthropic's Interactive Prompt Engineering Tutorial

Machine Learning Systems

An exercise that implements a hash map in ruby

APIs for Cloud Service Integrators

A pure Rails authentication system like Devise.

Source code examples and sample projects for The Minitest Cookbook

The Pair App is employed by the Agency of Learning for team management and communication.

A Ruby LSP add-on for Rails

RailsConf 2023 • Consuming Webhooks Workshop by @colinloretz and @excid3 (screencast now available below ✨)