Chat Roles & Messages

Open the developer console while chatting with an AI app and you won't see a paragraph being sent. You'll see a list, a few labeled boxes, each tagged with who said it. That list is the request. Once you see chat as a list of messages instead of a stream of te

8 lessons, each with runnable code in the browser.

1. The Message List
2. System Prompts: Setting Behavior
3. Multi-Turn Conversations
4. Building the Message Array
5. The Assistant Turn and Prefilling
6. Roles Beyond the Basics
7. Injecting Context Into Messages
8. Common Message-List Bugs

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