Organize your work: Projects, custom instructions, memory
Goal. Stop repeating yourself: set persistent custom instructions, let ChatGPT remember useful facts, and group related chats and files into a Project.
Set as a standing instruction: I'm a molecular biology researcher. Always use precise scientific terminology, define acronyms on first use, give SI units, and flag when a claim needs a primary-source check. Apply this to all future chats.
Open Settings → Personalization → Custom instructions and put your standing context there. It then applies automatically to every new chat — you stop re-explaining who you are.
- 1Custom instructions (Settings → Personalization). Tell ChatGPT, once, who you are and how you want answers. It applies to all chats. Custom instructions are available on every plan, including free.
- 2Memory. ChatGPT can remember facts across conversations (e.g. your field, your preferred figure style). You can review, edit, or clear remembered items in settings — useful when you switch projects.
- 3Projects. Group related chats and reference files under one Project with its own instructions — e.g. a 'Thesis chapter 3' project holding your draft and analysis threads. Privacy gate: consumer chats may be used to train the model by default; turn that off in Data Controls, and keep unpublished or patient data on Team/Enterprise tiers, not the free tier.
You'll see. New chats that already know your field and answer in your preferred style without being told — plus a Project that keeps one piece of work's chats and files together.
Cost. Custom instructions: all plans. Memory: limited on free, expanded on paid. Projects: available on free, with expanded Projects/tasks/custom-GPT capacity on Plus and Pro.
Takeaway. Set your context once with custom instructions, let memory carry useful facts, and use Projects to keep a body of work together — and lock down privacy in Data Controls before uploading sensitive data.