The speaker says the “explain it like I’m five” skill is available to install as a plugin.

“um we added this like uh explain it like i'm five skill actually which is a very short prompt and it doesn't even say explain it like i'm five it's like basically the key word of this prompt is big picture is few words you know like that's like the the main thing and it is shockingly good you know what i mean like you like uh i think i tweeted about this basically and it's like slash eli five and like you can install it as a plugin”