Verified70% confidenceFactExact time
A 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.
4
Sources
70%
Confidence
Long-term
Relevance
7/14/2026
First Seen
Sources
Prompt中一个词如何左右AI输出：可能性之井原理解析
Related Claims
VerifiedSystem 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.85% similarUnverifiedThe System Prompt is injected by developers before a conversation begins, declaring to the model its identity, behavioral boundaries, and reply style, and is placed at the very front of the context window in each conversation84% similarUnverifiedOpenAI's System Prompt mechanism allows developers to inject persistent behavioral instructions before a conversation begins.80% 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.77% similarUnverified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74% similar
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