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Reusable Assistants: Claude and ChatGPT Projects (Beginner)

Set up your instructions and files once, so every chat starts with your context. No code, one afternoon.

AI Foundations · Beginner · 12 min read · 4 quiz questions

By Ronan Liedmeier, fractional head of growth and course author · Reviewed 17 October 2026

What you will learn

  • Why custom GPTs are being retired and what to build in instead
  • The five parts of a reusable assistant: instructions, knowledge, tools, testing, sharing
  • Writing project instructions that work (identity, audience, tone, format, bans)
  • Choosing the few knowledge files that define your context
  • Moving existing custom GPTs to Plugins or Projects

Lesson preview

Every time you re-explain your situation to a fresh chat, you pay the same setup cost again. This lesson shows you how to build a reusable assistant in a Claude or ChatGPT Project: short instructions, a few key files, a five-request test and a clear sharing decision. OpenAI is retiring custom GPTs, so it also covers how to move the ones you already have.

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Key terms in this module

Claude Projects
Claude Projects is a feature in Claude that groups chats into a workspace with its own instructions and uploaded files, so every conversation in that workspace starts already knowing your context.
Custom GPT
A custom GPT is a version of ChatGPT set up for one job, with its own instructions, reference files and enabled tools, so anyone who uses it gets the same behavior without explaining the task each time.

Frequently asked questions

Who is "Reusable Assistants: Claude and ChatGPT Projects (Beginner)" for?
This Beginner module in AI Foundations is for people who are new to AI tools and want practical, everyday results without jargon. It takes about 12 minutes and ends with a 4-question quiz.
Do I need to code?
No. Everything in this module works in tools like ChatGPT, Claude or Gemini through a normal chat window.
What comes before and after this module?
Before "Reusable Assistants: Claude and ChatGPT Projects (Beginner)", take "Mobile & On-the-Go AI" (module 25 of AI Foundations). Afterwards, continue with "Team & Family Use".

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