AI glossary · Prompts and settings
Custom instructions
Custom instructions are standing preferences you give a chatbot, like your job or preferred style, so it applies them to every conversation.
Also called personalisation, personalization
In more detail
Rather than repeating “keep it short” or “I’m a beginner” in every chat, you write it once in the assistant’s settings. It works like a personal system prompt.
It differs from AI memory, where the assistant picks up facts during conversations on its own.
Example
“I’m a nurse in the UK. Use British spelling and keep answers under 200 words unless I ask for more.”
Related terms
System promptA system prompt is a set of background instructions that shapes how an AI behaves in every reply, such as its role, tone and rules. Users often don’t see it.AI memoryAI memory is a feature that lets an assistant remember details about you across conversations, such as your name, preferences or ongoing projects.Custom GPTA custom GPT is a version of ChatGPT set up for one purpose, with its own instructions, files and tools, that you can build without coding and share.
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