Using ChatGPT for Planning vs Codex?
OpenAI Developer Community
June 23, 2026
This is very close to the workflow I was trying to describe in an earlier feature request thread.
For me, the core issue is not only “ChatGPT for planning vs Codex for implementation”, but the lack of a first-class bridge between them:
* ChatGPT / a planner-reviewer model should have user-approved access to the same repository context.
* Codex should implement changes in that repository.
* The resulting diff should go back to a separate reviewer role/model.
* Codex should address the review comments.
* The human should remain the final approver before anything is applied or merged.
The current workaround is manual: upload/archive project context into ChatGPT, ask it to prepare Codex instructions, paste them into Codex, bring the diff back to ChatGPT for review, then paste follow-up instructions back into Codex.
Here is the earlier thread where I described the orchestrated loop / independent review / shared repository context idea: link
I think these discussions are pointing at the same missing workflow: ChatGPT as planner/reviewer, Codex as implementer, shared repo context, and explicit human approval.
Discussion in the ATmosphere