A system prompt is used for input formatting and passing dynamic arguments, while a user prompt guides the agent’s behavior and planning over time.

A system prompt defines the agent’s role, goals, rules, and when to use tools or escalate, while a user prompt structures how input arguments are passed to the agent at runtime.

A system prompt and a user prompt both serve the same purpose but are written in different parts of the agent.

System prompts exist solely to keep agents constantly adapting in real time, while user prompts are meant for agents that never change their behavior.