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Achieving Near-Linear Training Scalability for Pinterest’s Foundation Models

calendar_today June 25, 2026 person Pinterest Engineering domain pinterest
Sheng Huang Software Engineer, AI Platform; Pong Eksombatchai Machine Learning Engineer, Applied Sciences; Saurabh Vishwas Joshi Software Engineer, AI Platform; Gaurav Arora Software Engineer, AI Platform; Karthik Anantha Padmanabhan Engineering Director, AI Platform At Pinterest, foundation models power recommendations for over 600 million monthly active users. Our latest Foundation Model (ACM RecSys 2025) pre-trains on two years of user activity data and is deployed into Home feed and Related Pins ranking, the platform’s two most important recommendation systems. Multi-node distrib
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