ChatGPT has settings that most users have never touched. Some are buried in menus, some were added quietly in updates, and some require knowing they exist in the first place. Here are 10 that make a measurable difference in how useful ChatGPT is for daily work.

1. Custom Instructions (Settings → Personalization)

This is the single most impactful setting. Custom Instructions let you tell ChatGPT who you are, what you do, and how you want responses formatted — once — and it applies to every conversation. Instead of re-explaining "I'm a data analyst who prefers Python and concise answers" in every chat, you set it once and ChatGPT remembers.

2. Memory (Settings → Personalization → Memory)

ChatGPT can remember facts across conversations — your name, your job, your preferences, your ongoing projects. Turn it on and periodically say "remember that I prefer Tailwind over Bootstrap" or "remember my company uses PostgreSQL." Over time, ChatGPT becomes genuinely personalized.

Key Takeaway

Custom Instructions + Memory together mean ChatGPT learns your preferences over time. Set them once, benefit forever.

3. Data Controls (Settings → Data Controls)

Toggle off "Improve the model for everyone" if you're pasting work content. This opts your conversations out of OpenAI's training data. Essential for anyone using ChatGPT with business information.

4. Always Show Code (Settings → Speech)

If you use Code Interpreter, enable "Always expand code" so you can see the Python code ChatGPT writes instead of it being collapsed by default. This is how you learn and how you catch errors.

5. Default Model Selection

If you have Plus, you can set your default model. Most people leave it on GPT-4o, but for quick tasks like brainstorming, switching to a faster model saves time. For deep analysis, manually switch to o1.

6. Keyboard Shortcuts

Press Ctrl + / in ChatGPT to see all keyboard shortcuts. The most useful: Ctrl + Shift + O opens a new chat instantly. Ctrl + Shift + C copies the last response. Ctrl + Shift + ; copies the last code block.

7. Temporary Chat Mode

Click the "Temporary Chat" toggle in the top bar to start a conversation that won't be saved to your history and won't use your memory. Perfect for one-off questions you don't need cluttering your sidebar.

8. Pin Conversations

Right-click any conversation → Pin. Pinned chats stay at the top of your sidebar. Pin your 3-5 most important ongoing conversations so they don't get buried.

9. Archive Instead of Delete

Right-click → Archive moves conversations out of your sidebar without deleting them. You can find archived chats later if needed. Stop deleting conversations you might need.

10. Connected Apps

Under Settings → Connected Apps, you can connect Google Drive, OneDrive, and other services. ChatGPT can then reference and analyze your documents directly without copy-pasting content.

Pro tip

Spend 10 minutes right now going through Settings → Personalization and Settings → Data Controls. These two menus contain the highest-impact changes you can make.