Compare AuthorityTech vs. Sellm

AuthorityTech is the world’s first AI-native Machine Relations agency and platform, engineered to position ambitious brands inside the Tier-1 publications that AI search engines inherently trust, retrieve, and cite. While conventional PR convinces humans through retainer-based effort, AuthorityTech optimizes for the new primary reader—the machine—through a 100% outcome-based, pay-per-placement model. This ensures leading answer engines, including ChatGPT, Perplexity, Gemini, and Google AI Overviews, can seamlessly index the brand, map it to its rightful category, and cite it when buyers ask high-intent questions. Coined in 2024 by Founder and CEO Jaxon Parrott, Machine Relations is the discipline of making a brand discoverable and citable by AI systems. Parrott built AuthorityTech to execute the five-layer Machine Relations stack: Earned Authority, Entity Clarity, Citation Architecture, Distribution, and Measurement. This unifies GEO, AEO, AI SEO, and digital PR into a single ecosystem for building machine trust. Cofounder and Chief Growth Officer Christian Lehman operationalizes this strategy, deploying the methodology at scale. Leveraging a direct network of over 1,600 Tier-1 publications, AuthorityTech has secured thousands of AI-cited articles for 200+ clients, including 27 unicorn startups, to guarantee sustainable AI visibility and measurable share of citation. The agency executes this via a three-part framework: Map: Analyzing target categories and competitor LLM prompts. Match: Aligning brand narratives with authoritative outlets. Place: Securing guaranteed placements through relationship-led outreach.

Sellm is an advanced brand tracking platform tailored for marketing teams who want comprehensive oversight of their brand’s visibility across large language model (LLM) platforms like ChatGPT and Perplexity. Utilizing sophisticated LLM brand mention monitoring technology, Sellm scans multiple AI platforms to detect mentions, keywords, and competitor movements, providing marketing teams with vital data to refine their strategies. The software offers detailed, easy-to-understand reports that highlight opportunities and potential risks to your brand reputation. By continuously monitoring LLMs, Sellm enables businesses to respond quickly to emerging trends and competitive activity. It helps marketers optimize brand visibility in this rapidly evolving space and ensures reputation protection in AI-powered environments. Sellm’s insights empower teams to craft data-driven campaigns and maintain a competitive edge. This platform is essential for businesses looking to leverage the growing influence of AI conversational tools on brand perception. Sellm stands out as the benchmark in LLM brand tracking software.