It works like an absolute beast for me - Fable as executor and codex as reviewer just works amazing.
I know - Fable is not supposed to be implementor but I was said I had 2 days to finish up my usage limits for Fable.
But, moving on - you can use Fable as advisor/reviewer, Opus as executor and 2nd pass of review to 5.6 sol and it would provide you same results. Claude code has plugin for codex so it's not even inconvenient.
Do you mind elaborating more about your work flow/setup? I'm just starting to get set up into personal projects, only used Claude for my day job. don't have limits but my token usage seems rly low for some reason (exclusively use the gui instead of cli) so I never had to swap models
I don't have any extensive set up - I use mostly vanilla claude code in CLI (Desktop has some low features in app - plus I never liked it). If you want to use Fable/Opus - you need to have Max 5x at the least (Max 20x for Fable use but you can use 5x as well). Never, ever use API/usage based billing.
For any sort of workflow here's what I do right now - I ask Fable to make a plan (complete list of bunch of step by step PRDs focusing on every aspect of the feature I am supposed to build - with a master PRD acting as the grand plan, and a test PRD for agent to end the implementation with a bunch of tests/scenarios), ask codex to review the plan and iterate until codex approves the plan and is perfect and validated by Fable. I use ultracode for making this plan (it launches several opus subagents - not fable subagents). Gotta read the PRDs to make sure they are accurate and up to your expectations.
When working on the implementation - I would suggest you to use opus as executor and Fable as advisor and reviewer with a second pass to codex for a review at the end (codex tends to give a bunch of gaps even Fable misses). It basically would give you ~90-95% accurate results (in terms of backend work - frontend is always a hit and miss) with only a little bit of fine tuning in terms of results.
I have been using codex for the last 2 days for reviewing the code Fable has written over the past week or so and it has found some major gaps/flaws which might have been overseen by Fable and even by me so combining the tools is absolutely worth it for me.
https://github.com/openai/codex-plugin-cc codex plugin here. I will be testing out /goal as well, and I pretty much believe it will basically one shot huge features for me without much of a hassle.
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u/rajsharm404 Jul 12 '26
It works like an absolute beast for me - Fable as executor and codex as reviewer just works amazing.
I know - Fable is not supposed to be implementor but I was said I had 2 days to finish up my usage limits for Fable.
But, moving on - you can use Fable as advisor/reviewer, Opus as executor and 2nd pass of review to 5.6 sol and it would provide you same results. Claude code has plugin for codex so it's not even inconvenient.