pinterest Articles

Pinterest introduces PinLanding, a production pipeline that uses multimodal AI to automatically generate shopping collections from billions of catalog items.

engineering

ai

large-language-models

shopping

51 min read

Machine Learning•2025-12-10

LLM-Powered Relevance Assessment for Pinterest Search

Pinterest Search presents a methodology for scaling search relevance assessment using fine-tuned LLMs to replace costly human annotation.

How Pinterest Built a Real‑Time Radar for Violative Content using AI

Pinterest built a real-time AI-assisted system to measure the prevalence of policy-violating content by tracking what users actually see, not just what they report.

Machine Learning•2025-12-05

Improving Quality of Recommended Content through Pinner Surveys

Pinterest describes how Pinner (user) surveys are used to train a machine learning model that improves content quality recommendations across Homefeed, Related Pins, and Search.

Machine Learning•2025-12-04

On the (re)-prioritization of open-source AI

Pinterest shares its strategic shift toward fine-tuned open-source AI models, achieving comparable performance at less than 10% the cost of proprietary models.