Use ChatGPT for specs/tests; Copilot for inline code.
Workflow - ChatGPT: write spec, choose library, generate test plan. - Copilot: implement functions inline; accept/reject suggestions. Tips - Keep **test-first** habit; paste failing tests to ChatGPT for fixes. - Maintain a **CONTRIBUTING.md** prompting style guide. > Graphic: spec → tests → code loop.
Tags: how-to, chatgpt, copilot, dev