PromptBidder is an AI-driven advertising platform that enables advertisers to place ads on websites frequently cited by AI systems like ChatGPT in response to specific user prompts. The platform introduces a unique pricing model called CPARM (Cost Per AI-Referred Mille), charging advertisers only for impressions generated through AI referrals, thereby aligning ad spend with genuine consumer interest. Advertisers can select target prompts, choose publisher tiers, upload creative assets, and monitor campaign performance through a user-friendly dashboard.