With at least three intelligent-ish species on earth, while there is only one technological species, intelligence would not seem to be a great filter.

The things that allow us to be technological seems to me to be at least these four things occurring in parallel: 1) intelligence, 2) complex language, 3) dexterity, 4) an "instinct" to trade. Ridley suggested in Rational Optimist that other apes lack the instinct to trade even when we teach them language. I have no idea how this hypothesis fares in the wider world.

The great filter could conceivably be something like the chances of these 4 things occurring together are very low, in a p^4 kind of way. It appears there is only one species on earth that got there (or if the Neanderthals or other homo got there, it is a cluster of very closely related species, plus we don't know where neanderthal got to in all four of these characteristics.)

But we definitely beat the metaphorical pants off dolphins and octopi in communication, dexterity, and prevalence of trading behavior.