ConceptSystem Message / 系统提示
System Message
A special role message in large language model chat interfaces, injected at the very front of the conversation history to preset the model's persona, behavioral boundaries, tone and style, and tool-calling scope, continuously influencing the generated output of the entire session.
Timeline (last 90 days)
Nov 1
Writing only user instructions without a system message causes the Agent's tone and knowledge scope to drift randomly.
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