Short answerProjects keep chats, files and instructions together inside ChatGPT. Project instructions apply only inside the project. Summaries of OpenAI's help pages say GPTs do not use memory or custom instructions. Check current limits and sharing on OpenAI's pages.
- Projects: keep related chats, files and instructions together so ChatGPT uses the same context; project instructions apply only within that project.
- Custom GPTs: summaries say a GPT does not use saved memory, custom instructions or previous conversations, so each conversation starts fresh.
Not verified
- File-count limits per plan (summaries conflict).
- Project sharing rules by plan (sources conflict).
- Whether a GPT can be used inside a project.
A Project is a possible home for an internal GPT while you decide on a longer-term path; see alternatives and OpenAI's plugin route.
Check your GPT before you move it
Paste your instructions, file names and Actions schema into the free checker. It runs in your browser and builds a portable bundle. Nothing is uploaded.
Open the free checkerRelated guides
Sources
Pages describing other companies' products reflect their public documentation on the date shown and can go out of date.