Maximizing the Forbidden City's treasures (2025)

Im confused whats the point of running /clear vs starting a brand new session. At least with the latter I have session history, no? Pardon my ignorance since Claude isn't my primary driver. Part of the cynic in me knows I'm about to see a side-by-side with Opus 4.6 on categories where Qwen 3.8 27B aces it. What I see is that I have to read a bunch of images with tags. I don't know if that's genius or sad capitalism...