I don't think people realize how incredible it is that a movie rendered in nearly real-time in free software on a single computer just won the Oscar for best animated film. If there was ever any proof you don't need AI, this is it.
Flow was made entirely with Blender and rendered in real time with EEVEE. We didn't use a renderfarm. The final render was done on my PC. There was no compositing, all the colors were tweaked and adjusted using shaders.