# ChatGPT Projects: One Home per Client, Set Up Once > Stop re-explaining each client to ChatGPT. Give every client one Project with instructions, files and project-only memory. Setup steps and upkeep. Source: https://learn.ynteractive.com/content/blog/chatgpt-project-for-each-client · Updated 2026-10-17 · Free from Stepthrough (https://learn.ynteractive.com) Quick answer **Short answer:** make one [ChatGPT Project](https://learn.ynteractive.com/content/glossary/chatgpt-projects) per client. Give it short instructions (who the client is, the tone, which files to use, the sign-off), upload the two or three files ChatGPT should always check under **Sources**, and choose **Project-only memory** when you create it. From then on, every chat you start inside that project already knows the client. The free [ChatGPT Projects lesson](https://learn.ynteractive.com/content/chatgpt-projects-brand-voice) builds one in about nine minutes, in a practice copy. Last updated October 17, 2026 [Take the free module →](https://learn.ynteractive.com/courses/chatgpt-for-everyday-work/7)Module 7 of the free [ChatGPT for Everyday Work](https://learn.ynteractive.com/courses/chatgpt-for-everyday-work) course, about 9 minutes. No account needed. By [Robert Breen](https://learn.ynteractive.com/content/about) · Published October 17, 2026 · Updated October 17, 2026 · 5 min read ChatGPT · Projects · Habits ## What problem does a project per client solve? Re-explaining. Picture a made-up bookkeeping firm with a dozen small-business clients. Every time someone asks ChatGPT to draft a client email, they retype who the client is, how formal to be and what the fee schedule says. It is slow, and the day someone forgets a line, a wrong price or the wrong client's detail slips into a reply. There are two ways this goes wrong, and a project fixes both: - **Starting cold.** A [new chat](https://learn.ynteractive.com/content/glossary/new-chat) starts from zero. You can't count on ChatGPT remembering what you told it in another chat, so you paste the background again. - **Mixing clients.** Keep one long chat going for everyone and the last client's numbers are sitting there, ready to leak into the next answer. The [Stop Losing Context lesson](https://learn.ynteractive.com/content/chatgpt-stop-losing-context-new-chat-vs-keep-going) shows that leak with two customers' quotes. A project gives each client a home: the instructions and files stay put, the chats stay grouped, and clients stay apart. ## What goes into a client project? Three things, as taught in the [ChatGPT Projects lesson](https://learn.ynteractive.com/content/chatgpt-projects-brand-voice): 1. **Instructions.** A short note on how to write for this client: who they are, the voice, which file the prices come from ("never invent a price"), and how to sign off. [Project instructions](https://learn.ynteractive.com/content/glossary/project-instructions) apply to every chat in the project and take priority over your general custom instructions. 2. **Sources.** The files every chat should read, such as a fee schedule or a style guide. You can upload PDFs, documents, spreadsheets and images, paste text, or connect Google Drive or Slack. Upload once instead of in every chat. 3. **Project-only memory.** Chats in the project draw only on each other, not on everything else you have asked ChatGPT, and your other chats can't see them. That keeps each client in its own lane. Keep it small and current. A project with only the documents that matter beats one that holds everything. ## How do you set one up? The steps below are the ones in the lesson. Menus change, so look for the same names in your account. 1. In the sidebar, under **Projects**, click **New project** (or the **+** next to the Projects heading). 2. Type the client's name. 3. Click **Default memory** at the bottom of the box (on some accounts it is behind a gear icon) and choose **Project-only memory**. Then click **Create project**. 4. On the project page, click the **⋯** next to **Share**, then **Project settings**. Paste your instructions in the **Instructions** box and click **Save**. 5. Open the **Sources** tab, click **Add sources**, then **Upload**, and add the client's files. 6. Start work in the **New chat in** box at the top of the project page. To come back to the project from a chat, click its name at the top left of the chat. For your own setup, see [how to write project instructions](https://learn.ynteractive.com/content/blog/chatgpt-custom-instructions-vs-project-instructions) and where they sit next to custom instructions. ## How many projects and files can you have? Projects are on the Free plan too. The lesson lists the file limit per project as 5 on Free, 25 on Plus and Go, and 40 on Pro and business plans. Check your own plan, because limits change. ## How do you keep a client project accurate? Treat the files like the client's paper file. When a fee or a policy changes, remove the old file from **Sources** and add the new one, so no chat reads last year's prices. When a reply is off, fix one rule in the instructions and test it in a new chat inside the project. And always read a reply before it goes to a client. The project supplies the background; you still check every number. Keep the files to what the work needs. Firm documents like fee schedules and templates belong there; tax returns, IDs and account numbers don't. The [ChatGPT data controls lesson](https://learn.ynteractive.com/content/chatgpt-data-controls-protect-client-data) covers the account settings to check first. ## What about custom GPTs? If you built a custom GPT for client work, move it. Custom GPTs are scheduled to stop running on December 11, 2026 in Enterprise workspaces, according to OpenAI, and other plans may follow. The [Replace Your Custom GPT with a ChatGPT Project lesson](https://learn.ynteractive.com/content/replace-custom-gpt-with-chatgpt-project) copies a GPT's instructions and files into a project and tests it. For a side-by-side view, see [ChatGPT Projects vs custom GPTs](https://learn.ynteractive.com/content/blog/chatgpt-projects-vs-custom-gpts). ## Try it free, step by step **ChatGPT Projects: Keep Your Brand Voice, Files and Instructions in One Place**. Set up a ChatGPT Project with your brand voice instructions, your price list and your style guide, so every new chat already knows your business. You do every step yourself in a practice copy of ChatGPT, it checks your work as you go, and “Do it for me” finishes any step you get stuck on. Free, and nothing touches your real accounts. [Start the free lesson](https://learn.ynteractive.com/modules/chatgpt-projects-brand-voice) [Or read the full step-by-step guide](https://learn.ynteractive.com/content/chatgpt-projects-brand-voice) ## Key takeaways - One project per client stops the re-explaining and keeps clients' details apart. - Each project needs short instructions, a few current files under Sources, and project-only memory. - Start every chat for that client inside its project. - Replace old files when fees or policies change, and check every number before it goes out. - Keep confidential client records out of project files. ## Frequently asked questions **Should I make one ChatGPT Project for all my clients?** No. One project per client (or per big recurring job) keeps instructions, files and chats apart, so one client's details don't drift into another client's reply. **Can I share a client project with a coworker?** There is a **Share** button at the top of the project page. Before you invite anyone, read [shared project vs shared chat link](https://learn.ynteractive.com/content/blog/chatgpt-shared-project-vs-shared-chat-link) to see what a shared project shows. **Do old chats change when I edit the instructions?** No. New chats in the project follow the new instructions. Start a fresh chat inside the project to test a change. **Is a ChatGPT Project free?** Projects are included on the Free plan, with fewer files per project than paid plans. Check OpenAI's pricing page for your plan. ## Free lessons in this post - [ChatGPT Projects: Keep Your Brand Voice, Files and Instructions in One Place](https://learn.ynteractive.com/content/chatgpt-projects-brand-voice): Set up a ChatGPT Project with your brand voice instructions, your price list and your style guide, so every new chat already knows your business. - [Stop Losing Context: When to Start a New Chat vs Keep Going using ChatGPT](https://learn.ynteractive.com/content/chatgpt-stop-losing-context-new-chat-vs-keep-going): Quote a customer in one ChatGPT chat, change the numbers without re-pasting anything, then start a clean chat for the next customer so their details never mix. - [Replace Your Custom GPT with a ChatGPT Project](https://learn.ynteractive.com/content/replace-custom-gpt-with-chatgpt-project): Custom GPTs are retiring (Enterprise: December 11, 2026). Copy your GPT's instructions, starters and files, rebuild it as a ChatGPT Project with project-only memory… ## Watch it in a free lesson: ChatGPT Projects: Keep Your Brand Voice, Files and Instructions in One Place ### ChatGPT Projects: Your Brand Voice in One Place: video walkthrough Full walkthrough · 3:29 · with captions Set up a ChatGPT Project with your brand voice instructions, your price list and your style guide, so every new chat already knows your business. The whole lesson narrated step by step, recorded in Stepthrough’s simulated practice environment. [Watch it with chapters and the full transcript](https://learn.ynteractive.com/content/chatgpt-projects-brand-voice#watch) From the free lesson [ChatGPT Projects: Keep Your Brand Voice, Files and Instructions in One Place](https://learn.ynteractive.com/content/chatgpt-projects-brand-voice) ## Related terms Plain-English definitions, each with an example from a free lesson. [ChatGPT Projects](https://learn.ynteractive.com/content/glossary/chatgpt-projects) · [New chat](https://learn.ynteractive.com/content/glossary/new-chat) · [Project instructions](https://learn.ynteractive.com/content/glossary/project-instructions) · [Action items](https://learn.ynteractive.com/content/glossary/action-items) · [AI note-taker](https://learn.ynteractive.com/content/glossary/ai-note-taker) · [AI summarization](https://learn.ynteractive.com/content/glossary/ai-summarization) · [ChatGPT plugin](https://learn.ynteractive.com/content/glossary/chatgpt-plugin) · [Context window](https://learn.ynteractive.com/content/glossary/context-window) [The full AI glossary](https://learn.ynteractive.com/content/glossary) ## Related prompts - [Action items table prompt](https://learn.ynteractive.com/content/prompts/action-items-table-prompt): Paste a meeting transcript or rough notes and get a table of every task, owner and due date, with "Not stated" wherever nobody… - [Change one fact, show what moved prompt](https://learn.ynteractive.com/content/prompts/change-one-fact-and-show-what-moved-prompt): A follow-up prompt for a ChatGPT chat that tells the AI one new fact, then asks it to redo the work and list exactly which… - [Feedback conversation script prompt](https://learn.ynteractive.com/content/prompts/feedback-conversation-script-prompt): Plan a short, direct feedback talk with a teammate: the specific moment, why it mattered, a question to hear their side and one… - [Meeting agenda prompt](https://learn.ynteractive.com/content/prompts/meeting-agenda-prompt): Turn a list of topics into a timed meeting agenda where every item has an owner, a question to settle and minutes that add up to… [All free prompt templates](https://learn.ynteractive.com/content/prompts) ## Visual guides The same ideas as quick visual guides: swipe through the slides, or read each one as text. - [ChatGPT: New Chat or Same Chat? Decide in 6 Steps](https://learn.ynteractive.com/content/visual/ladder-new-chat-or-same-chat): A step-ladder guide to ChatGPT context: stay in the same chat when the job is the same, start a new chat for a new customer, and check the numbers. - [Mistake: Re-Explaining the Client in Every ChatGPT Chat](https://learn.ynteractive.com/content/visual/mistake-re-explaining-the-client-every-chat): A common ChatGPT mistake: explaining the same client again in every new chat. Give each client one Project with its own instructions and files. - [Myth: ChatGPT Memory Is Where Your Work Rules Belong](https://learn.ynteractive.com/content/visual/myth-chatgpt-memory-holds-your-rules): Myth vs fact: ChatGPT memory is not where work rules belong. Put standing rules in custom instructions and one client's rules in its Project. [All visual guides](https://learn.ynteractive.com/content/visual) ## Keep reading - [Chat vs Project in ChatGPT: The Difference for Work](https://learn.ynteractive.com/content/blog/chatgpt-projects-vs-chats): The difference between a chat and a project in ChatGPT: a chat is one conversation, a Project groups chats, instructions and files. When to use each. - [ChatGPT Projects vs Custom GPTs: Which One Should You Use](https://learn.ynteractive.com/content/blog/chatgpt-projects-vs-custom-gpts): ChatGPT Projects keep chats, files and instructions together; a custom GPT is a single-purpose assistant. Compare them and see which to build on. - [Does ChatGPT Remember Other Chats? Chat History vs Memories](https://learn.ynteractive.com/content/blog/chatgpt-reference-chat-history): ChatGPT can remember other chats through saved memories and the Reference chat history setting. What each one does, and how to control both at work. [All blog posts](https://learn.ynteractive.com/content/blog) · [All free tutorials](https://learn.ynteractive.com/content)