Le paysage du développement assisté par l’IA

Welcome! AI coding means building real software by describing what you want in plain English, instead of typing every line. You talk, the AI writes the code.

There are dozens of AI coding tools, and the list keeps growing — that can feel overwhelming. Good news: you only need a few categories, not every product.

Almost every tool fits one of three families: chat assistants (you ask, they answer), IDE assistants (suggest as you type), and agents (do many steps).

A chat assistant is the simplest kind: open a window and ask in plain words. Perfect for learning, getting unstuck, or grabbing a small snippet. Try the prompt below.

An IDE assistant lives inside your code editor and suggests the next lines as you type, like autocomplete. It sees your files and keeps you in flow.

An agent is the most powerful family. Give it a goal and it plans and does many steps on its own — creating files, writing code, even fixing its own mistakes.

Tools also differ by where they run: in the browser (nothing to install) or on your computer (faster, more private). As a beginner, browser tools are easiest.

Most tools have a free tier, so you can try them at no cost. Paid plans add speed and higher limits. Start free; only pay once a tool clearly helps you.

Every tool is powered by an AI model — the brain that reads your words and writes code. Just remember: the tool is the app you click; the model is its engine.

Tools change fast, but the core skill doesn't: describing what you want clearly. Say the what, the who it's for, and any limits — then you can switch tools easily.

It's tempting to chase every shiny new tool, but that slows you down. Most builders pick one chat tool and one agent or IDE tool and stick with them.

Let's see what stuck from this lesson.

Nice work! Tools fall into three families — chat, IDE assistant, and agent — and the lasting skill is clear description. Next, we compare them side by side.