[dir]

fundamentals

4 articles

The basics: how models work and why.

filter: --all --concepts --tools

›[concept][★ featured]updated 2026-06

What is an LLM

A language model trained on massive text to predict and generate coherent language — the engine behind ChatGPT, Claude, and Gemini.

›[concept]updated 2026-05

What is the Context Window?

The context window is a language model's immediate memory. Understanding it is key to avoiding incomplete or incoherent responses.

›[concept]updated 2026-05

What is AI-First Development?

AI-First is a development paradigm where the human directs technical decisions and AI executes the mechanical work, inverting the traditional workflow.

›[concept]updated 2026-05

What is a token

A token is the text unit a model processes. It shapes input splitting, context limits, latency, and usually API cost.