Conversation Flow Builder — Design Multi-Turn AI Chats

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Add a System, User, or Assistant message above to start building your conversation flow.

Templates

Load a pre-built conversation to explore.

Message Roles Guide

S System

Sets the AI's behavior and personality. Think of it as backstage instructions the user never sees. Place it first in the conversation. Example: "You are a senior Python developer who gives concise code reviews."

U User

The human's message. This is what you (or your app's user) say to the AI. Be specific and clear. Example: "Review this function for bugs and suggest improvements."

A Assistant

The AI's reply. When building templates, you can pre-fill expected responses to show desired behavior. In the API, you include past assistant messages so the AI has context for multi-turn chats.

Best Practices

● Always start with a System message to define behavior.
● Alternate User and Assistant messages for natural dialogue.
● Keep system prompts focused — one clear role is better than many vague instructions.
● More context = better responses, but watch token counts for API cost.
● Export your flow as JSON to use directly with the OpenAI Chat Completions API.