Research
Original research from friction AI on how AI systems discover, surface, and recommend brands.
AI Recommendation Rankings
Category-by-category research showing which software brands ChatGPT recommends, with visible prompts and full ranking metrics.
Browse rankingsWhite Papers
Long-form research on AI Engine Optimization, LLM brand visibility, and the systems that determine which brands AI surfaces.
Browse white papersLatest publications
Agencias de marketing digital en España
Agencias de marketing digital en España
Agencias que prestan servicios profesionales de marketing digital a empresas en España, incluyendo estrategia digital, SEO, publicidad de pago, contenidos, redes sociales, automatización, analítica, generación de leads y crecimiento de comercio electrónico.
- Market
- Spain

The Personalization Gap: Account History and Brand Recommendations in Generative AI
A controlled study of account history and AI brand recommendations, using identical questions across neutral sessions and history-primed accounts.
By Cassie Wilson Clark and Joao da Silva

Beyond Knowledge Graph Strength: what 14,140 LLM queries revealed about brand visibility in generative AI
A controlled 14,140-run study of 12 athletic apparel brands across 5 large language models shows that Knowledge Graph strength predicts brand surfacing direction within a category, but carries no signal across category boundaries. The variable that does the work is Category Coding: the KG description field combined with the category-aligned third-party content corpus.
By Maryanna Franco and João da Silva