30min Q&A/Web Research: Claude (Sonnet 4.6): 28% - Codex (5.5 Medium): 96% left in the 5 hours session

Exact same prompt on both, research this topic, then, compare options and provide a recommendation, then, analyze again from the different perspective, new recommendation, all on the same prompt. That's all, 1 question, 3 follow ups.

I thought they were more or less equivalent in tokens/$, clearly not, outcome quality, speed, etc., very similar

Note: both started at 100% or 99% capacity for the 5 hours and for the week.