Unverified50% confidenceSolutionExact time
许多模型对System Prompt有特殊处理机制，其权重通常高于普通对话内容，将核心规则写入系统提示比放在普通用户消息中更能抵抗衰减
1
Sources
50%
Confidence
Long-term
Relevance
7/16/2026
First Seen
Sources
Related Claims
UnverifiedIn multi-turn conversations, the System message sets the behavioral tone and constraints, the user message represents user input, and the assistant message is the model's historical replies.77% similarUnverifiedA System Prompt is a hidden instruction layer deployed before the user-visible conversation, pre-configured by developers to set the boundaries of model behavior, and remains in effect throughout the entire conversation.74% similarUnverifiedThe system prompt is injected before the conversation begins, defining the model's behavioral boundaries, personality characteristics, and output specifications, and is typically not visible to end users.74% similarUnverifiedSystem prompts are a layer of instructions preset by vendors and invisible to users, injected into the model context before the user's conversation begins, used to shape the model's behavioral boundaries, response style, and safety policies.73% similarUnverifiedIn API calls, the system prompt is passed in as a distinct message role (role: system), carries higher instruction priority than ordinary user messages, and persists throughout the entire conversation.72% similar
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