Personalizing ChatGPT: Custom Instructions and Memory

Personalizing ChatGPT improves its usefulness by letting you set stable preferences and retain chosen details across conversations.

Custom instructions

Custom instructions let you set stable preferences for ChatGPT that apply to new conversations until you change, disable, or remove them. You can specify your role and responsibilities, preferred tone, desired output formats, and guardrails such as asking clarifying questions when requirements are unclear. Think of custom instructions as your default "working style" so you do not repeat yourself each time; use them for stable preferences and use the chat prompt for the specific task at hand.

Memory

Memory enables ChatGPT to retain details you choose to share so future replies feel more tailored without you re-explaining the basics. You can store information you explicitly ask it to remember and, if enabled, let it use recent conversation context to respond more helpfully. In conversation you can ask "What do you remember about me?", say "Remember that…" to save an item, or say "Forget that." to remove a specific item. Memory works best for recurring context such as your role, common projects, or preferences; avoid saving one‑off details that will not matter later.

Other tools

Skills let you turn repeatable tasks into structured, reusable workflows that guide ChatGPT to follow a consistent process, format, or set of instructions matching how you work. By using skills you can move from one‑off prompts to more consistent workflows for the tasks you do often.