I don't know. You can't just rely on looking for em dashes or other obvious tells because anyone who cares can get the AI to avoid those.

> When the headline model on your plan can be switched off because the economics don’t work, the plan was never really selling you the headline model. Kimi’s tiers don’t come with that asterisk.

This line has a certain smug, punchy cleverness that I associate with AI. To me, the vibes are ~30% AI writing.