AI law startup Norm has raised a $120 million Series C round led by Khosla Ventures, valuing the startup at $1.2 billion. 

Sandstone's Series A comes just six months after a Sequoia-led seed round.

The two wildly fast-growing rivals have raised massive sums, pushed into each other's home turf, and now have dueling ad campaigns.

Investors like Sequoia, Andreessen Horowitz, Kleiner Perkins, and Elad Gil can't get enough of AI legal tech startup Harvey.