Checklist for building and testing a custom GPT
Steps to build, refine, and test a custom GPT for reliable performance.
Before or after
before
Context
Building a custom GPT
What it does and when to use it
Follow these steps to build a custom GPT: start in the GPT builder, define objectives, write instructions (drafting with ChatGPT is an option), add knowledge and tools, test thoroughly, save updates, and share.
Why it works
A structured approach ensures all necessary components are configured and tested, leading to a reliable and effective custom GPT.
Sources and credit
- Using custom GPTs ↗OpenAI · OpenAI News · Apr 9, 2026 · paraphrased
First seen on Subvolts Apr 9, 2026. Updated Sep 11, 2026. Spotted a problem? Tell us.
Where it shows up
- Using custom GPTsOpenAI · OpenAI News · Apr 9, 2026
Related in the PlaybookPlaybook →
The Playbook: reusable how-tos, prompts, configs and tips pulled out of the news.
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Questions people ask
- Which AI tools does this work with?
- The sources used it with ChatGPT.
- Where did this come from?
- OpenAI (OpenAI News). Subvolts collected, normalized and credited it; the link above opens the original.