What is a large language model?
Understand what an LLM learns, how it generates text, and why fluent answers can still be wrong.
Read lesson →XYQEN / LEARN · EXPLORE · BUILD
Understand the systems.
Build what’s next.
A practical atlas of AI, language models and engineering. Learn the ideas, explore working systems, and study code you can make your own.
EXHIBIT 02 / STRATEGIC SYSTEMS
A global perspective.
A closer understanding.
Explore the technology, physics and history of publicly documented strategic ballistic missile systems through an educational 3D exhibit.
Enter Strategic SystemsA clearer way into AI.
All lessons →Tokens, context and attention
See how text becomes model input and why the context window matters.
Read lesson →Write prompts you can evaluate
Turn a vague request into a repeatable task with evidence, boundaries and a review checklist.
Read lesson →Your work has its own space.
Case Analysis, Email Response and saved OSINT investigations live in your account workspace. Public lessons and the aircraft exhibit are available without signing in.
Open your private workspace →