The Spyderco Dragonfly II is 1 ounce even on my scale and it’s probably the most blade edge surface per ounce in a quality pocket knife. At least that I know of.
My Delica is 2.3 ounces, and my FRN Native is 2.6 ounces.
I think it’s almost impossible to beat the Spyderco FRN knives in terms of performance-to-weight, but I still won’t take my Delica if I plan to just beat the snot out of a knife. That’s what beaters are for, and at 17 bucks I think this is a good beater.
This last week I have been carrying the G719 (?) which is a switchblade. Ganzo and Sanrenmu both have been stepping it up.