Flowing water over rocks

interactive lab

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AI Conversation Simulator

Watch how AI conversations work under the hood — step through real API calls and agent workflows. See the JSON messages, tool calls, and the agent loop in action.

conversation simulator
2 phases
timelineready to begin
the basics

What Happens When You Send a Message

When you type into ChatGPT, a structured request is sent to the model behind the scenes. It includes a system prompt — hidden instructions that tell the model how to behave — along with your message. This simulation shows you exactly what that request looks like.

use the controls above to step phase-by-phase or autoplay

context window
press play to see the context window