[lolinder]

While this is true, that doesn't make them a complement to Facebook's broader business. Here's Joel's definition:

> A complement is a product that you usually buy together with another product. Gas and cars are complements. Computer hardware is a classic complement of computer operating systems. And babysitters are a complement of dinner at fine restaurants.

LLMs aren't really a complement like gas to cars because the end user doesn't need to consume the LLM in order to use the social media site. It's more like LLMs are becoming an essential component of a social media site—not like gas to cars but like an engine control unit, a part that ideally the user will never see or interact with. Joel's reasoning doesn't apply to that kind of product because users don't see the price of LLMs as a barrier to consumption of social media.