>>117951611. Unironically 1. Ai's with insect level intelligence can gain ultra crystallised knowledge that allows them to achieve superhuman performance on certain tasks, but that singular task is their entire reality.
If you talk about understanding as in comprehension, then crows can work out puzzle mechanisms to get at nuts, and dogs can pull rope to get a treat, but tend to get it wrong if you change the experiment around from the first time round.
koalas can't even figure out that if they can't reach through a transparent tube you should just go round the other end, they just reach until their arm gets tired then give up. But they're smart enough to eat leaves.
If your talking about not being an instinct driven soon to be micro-chipped NPC in human society then I'd say around 115 to 120.