In the context of LLMs, a "system message" refers to a message or prompt used to set the context or guide the behavior of the model during a conversation. It is typically the first message in a dialogue and is used to instruct the LLM or establish the role it should play in the conversation. System messages help steer the interaction by providing context or specifying the desired format of the response, and they are important for shaping the LLM's behavior, ensuring it understands its role (e.g., as a tutor, chatbot, or information provider), and generating responses that align with the user's expectations.
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