On the Alerts (Pro) tab, keep “Score every chat as Hot, Warm, or Cold” on. After each AI chat, the assistant rates the buyer and a colored score badge appears in your Leads list, with the reason on hover.
With Pro on, the Leads list gains a Score column: Hot, Warm, or Cold, with the reason on hover.
Message-mode leads are not scored, so your AI quota is only spent on real AI chats. A chat already marked Hot is not re-scored.