Will be there soon according to the last commits in the codex repo: https://github.com/openai/codex/pull/31684/changes

Also, confirmed it works for me by using --model gpt-5.6-sol

Does it support subagents?

I used to pride myself on not being the "fonts too pointy, scroll too buttery" crowd! But AI has brought me full circle and now nothing removes my interest in reading even a single word on a page faster than purple gradient greeble-afflicted tailwind-slop models put out without stronger prompting/references

That being said, maybe 5.6 can fix that!