How to stop pasting the same prompt every time

Why pasting stops working

A prompt you paste is a prompt you edit. After a month you have the version in your notes, the improved one in last Tuesday's chat, and the one a colleague copied from you in March. Each paste is also a chance to forget the line that mattered ("never mention the deposit amount"). Saving it in the AI fixes both: one copy, always there.

Find the prompts worth moving first

Don't move everything at once. For one week, notice each time you paste or retype the same instructions, and keep a tally in a note. Most people find two or three prompts that account for most of their pastes: a reply in the company's tone, a report format, a summary they always ask for in the same shape.

• Search your chat history for the line you always start with ("You are", "Write in our", "Use this format"). Each hit is a paste.
• Check your notes app for a page of saved prompts; the ones near the top are the ones you use.
• Pick the top one. Moving one prompt that you paste ten times a week saves more than tidying twenty you rarely use.

Where each line ends up is simple: lines about you go in custom instructions, lines about one client or project go in that project, and lines about one kind of task become a skill. If you're unsure which a line is, custom instructions vs Projects vs skills has the decision rules and a side-by-side table for ChatGPT and Claude.

A worked example

Illustration: a made-up business. Lena is a letting agent at a 12-person agency. She writes about 15 property listings a week, and pastes the same 250-word prompt each time: the agency's tone, the order of sections, the words they never use ("cosy" for small), the legal line about deposits, and a sample listing.

She sorts what's in the prompt:

• "I work at a letting agency in Leeds; write in British English" applies to everything she does. It goes into custom instructions.
• The listing rules and the sample apply to one task, done across all her properties. They become a skill named "Property listing", with the description "Use when writing a rental listing from viewing notes".
• The landlord's own requests for one building (no pets, mention the bike store) go in a project for that building.

Now she types "listing for 14 Park Row, notes below" and the AI follows the agency's rules without a paste. When the deposit rule changed, she edited the skill once instead of hunting through notes.

Move one prompt in 15 minutes

1. Pick the prompt you paste most. Search your notes or chat history for the line you always start with.
2. Split it: lines about you go to custom instructions; lines about one task stay together; lines about one client go to that client's project.
3. Give the task part a name and a "use when" line, such as "Use when writing a rental listing from viewing notes".
4. Save it as a skill (in Claude: Customize > Skills) or, if your plan doesn't have skills, as a project's instructions.
5. Test it on three real requests without pasting anything, and fix the lines it ignored.

When colleagues want your prompt

A prompt that works gets asked for. Sending it by email starts the copies all over again, one per colleague, each drifting. How to get your team to use AI the same way covers sharing one version with everyone. If you're unsure which of the three places suits which prompt, custom instructions vs Projects vs skills goes deeper.

The AI skill below does steps 3 to 5 for you: paste the prompt you reuse, and your AI turns it into a skill with a clear name, a "use when" line, steps, a template and an example, ready to save and share.

Questions

Can ChatGPT save a prompt so I don't have to paste it?

Yes, in three places: custom instructions (applied to all your chats), a project's instructions (applied to chats in that project), and a custom GPT, which OpenAI retires on 11 December 2026. Choose by how widely the prompt applies.

Should I put my prompt in custom instructions?

Only if it applies to nearly every chat, like your role, your language, or 'keep answers short'. A prompt for one task, like listing descriptions, belongs in a project or a skill, or it will leak into chats where it doesn't fit.

What's the difference between a saved prompt and a skill?

A saved prompt waits for you to paste or select it. A skill has a name and a 'use when' description, and the AI loads it by itself when your request matches, so you just ask for the task.