Wow, I tried GPT 5.5 Extra High for the first time. Used almost all my 5 hour window in 35 mins.
Thinking it might be time to upgrade soon. Honestly the $20 plan is absurdly generous but I want more.
Finally figured out why @mattpocockuk's skills are always in my model context.
Codex doesn't honour the disable-model-invocation: true flag. Instead Codex uses openai.yaml with policy:
allow_implicit_invocation: false
See: developers.openai.com/codex/…