Custom GPT

A concrete example

I build a Custom GPT called "CRM Analyst" with my instructions, my files, and an action that calls my API. My team uses it with zero setup.

Why it matters

It's the simplest gateway to building a specialized assistant, no code, available to your whole team.

You run into it in ChatGPT, the GPT Builder, internal assistants, and no-code tools built around OpenAI.

Don't mix it up with

Claude Code: Claude Code is Claude's agent: it reads a project, edits files, and runs commands with your approval.

Agentic workflow: An agentic workflow is a sequence of steps where the AI plans, uses tools, checks its work, and keeps going until it hits the result.

Common mistakes

• Putting sensitive data in it without checking the sharing settings.
• Thinking a Custom GPT replaces a real AI product.
• Forgetting that Custom GPTs are only available to ChatGPT Plus subscribers.

Quick checklist

• First I check whether the word names a concept, a tool, a risk, or a metric.
• I tie it to a concrete case: I build a Custom GPT called "CRM Analyst" with my instructions, my files, and an action that calls my API. My team uses it with zero setup.
• I keep the main trap in mind: Putting sensitive data in it without checking the sharing settings.