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Lexicon / TECHNIQUE

System Prompt

A set of instructions given to an AI model before the conversation begins, defining its behavior, persona, and constraints.

A system prompt is the behind-the-scenes instruction that shapes how an AI responds. It sets the tone, role, and rules before the user ever types a message.

Examples

  • “You are a helpful coding assistant. Always respond with code examples.”
  • “Answer in Spanish. Keep responses under 100 words.”
  • “You are a legal advisor. Never provide medical advice.”

System Prompts in TalkFlux

TalkFlux supports a cascading system prompt hierarchy:

  1. Conversation prompt — specific to one chat
  2. Project prompt — shared across all chats in a project
  3. Global prompt — your personal default fallback