Expired80% confidenceFactExact time
A System Prompt is a 'personality instruction' preset by developers for large language models, used to define the behavioral boundaries of the AI throughout a conversation.
7
Sources
80%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
A 17-Year-Old Built a 'No-Lecturing' AI Friend in a Grain Barn: It Never Gives Advice, Yet Understands You Better
bilibiliBruce的AI日记5/10/2026
Related Claims
UnverifiedSome AI customer service tools support setting a System Prompt, allowing business owners to define the AI's role, tone, and response boundaries.78% similarUnverifiedSystem prompts are hidden instructions pre-injected by AI companies before a user conversation to govern the model's behavior, and users cannot normally see these instructions.78% similarVerifiedGlobal AI instructions are essentially system prompts injected into every AI interaction and can include coding style requirements, technology stack constraints, and output format specifications.77% similarUnverifiedPrompt Engineering is used to preset detailed character behavior instructions at the system level to guide AI models in generating immersive responses77% similarUnverifiedGiving an AI a specific personality is typically achieved through system prompt engineering, with a more advanced approach combining few-shot examples.77% similar
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