This is literally my new workflow now:

o3 → PRD

Gemini 2.5 Pro → execution plan

Cursor + Gemini 2.5 Pro MAX/Sonnet 3.7 MAX → code

Gemini 2.5 Pro → writes test cases

Codex → run test cases

o3/Gemini 2.5 Pro → debug

Bookmark this.

@minchoi