I've seen Moonshot pay creators on X for posting promotional messaging about Kimi K3.1 Pro, with the requirement not to disclose it as a paid sponsorship.

X then took action and suspended creator's accounts that were posting about Kimi K3.1 without the paid sponsorship tag, allegedly hitting some accounts that weren't paid by Moonshot.

In any case, I do not think that people are typically being paid to promote AI generally, rather than specific products.

To imply so on comments from well established HN users, as if it was unlikely they simply find value in AI and have a genuinely positive opinion, often seems misguided.