HubSpot Campaign Assistant is a free AI marketing asset creator offered by HubSpot. It allows users to generate copy for landing pages, emails, and ads with just a few clicks, saving time and effort. By providing key details about the campaign, Campaign Assistant generates copy tailored to the user's preferred platform. It helps users create compelling marketing campaigns by automating the writing process and allowing them to focus on the details that require a human touch. Whether it's crafting landing page copy, email content, or ad copy, Campaign Assistant helps streamline the marketing process with the power of AI.