Free, Concept-First Courses
Clear, accurate explanations of the concepts every AI engineer should know - free, forever, with no account needed.
How AI Actually Works
From a single neuron to a language model — free, end to end, no math required.
Prompt Engineering
How to actually talk to an AI model — free, end to end, diagram by diagram.
RAG (Retrieval-Augmented Generation)
How to give an AI model real, current, accurate knowledge — free, end to end, production diagram by production diagram.
Agentic AI
What actually makes an AI system 'agentic' — free, end to end, diagram by diagram.
MCP (Model Context Protocol)
The real, standard way an AI application actually reaches real tools — free, end to end, no code required.
Building Real APIs for AI Applications
How a genuinely capable model actually becomes something real users can use — free, end to end.
OpenAI Models Explained
The real, lasting pattern behind every model tier — free, built to stay accurate as specific models change.
Claude & Anthropic Models Explained
The real tiers, the real approach, and real production use — free, accurate, built to last.
AI Evaluation & Observability
How do you actually know if it's working? Free, end to end, evidence over guesswork.