https://github.com/obra/superpowers

I use Opus/Sol with for /brainstorming, deepseek (on Pi) for /subagent-driven-development

I love it, the docs are easily editable and when I'm ready Deepseek is faster/cheaper then everything on my coding plans.

Pairing non-APIs with APIs tend to be a hassle, and risky, as usually that breaks the ToC. I guess easiest for you to test if it's worth using the OpenAI API, is to manually copy-paste responses between wherever you run V4-Flash and the ChatGPT UI. What I've done in the past is basically .zip up the entire project directory, ignoring files from .gitignore, then asking ChatGPT Pro to inspect that and come up with a plan, then you paste that to where you have V4-Flash. Basically how we did "vibe pair programming" before the TUI agent harnesses appeared in the ecosystem :)