How exactly is token billing calculated? Roughly how much does one AI reply cost, and are there any hidden subscription fees?

【How exactly is token billing calculated? Roughly how much does one AI reply cost, and are there any hidden subscription fees?】I want to understand OmniPulse AI's billing model: is it per message, per token usage, or ... Official Solution & Step-by-Step Guide: 【Official Architecture & Standard Operating Procedure】 Billing is based on actual token usage (settled in USDT) — there'...