Meta Andromeda: Powering the Next Generation of Ads Retrieval Through Model-System Co-Design

Meta detailed the next generation of Meta Andromeda, its personalized ads retrieval engine, which co-designs the model, system and GPU hardware to score every eligible ad with near ranking-level model performance at retrieval scale and surface top candidates at over one [truncated] per second. Meta published the engineering account on its Engineering at Meta blog on October 28, 2026. The co-design approach is presented as unlocking a new efficiency frontier for ads retrieval.

This post describes the next generation of Meta Andromeda, Meta’s personalized ads retrieval engine, and how co-designing the model, system, and GPU hardware unlocks a new efficiency frontier for ads retrieval. In production, the system scores every eligible ad with near ranking-level model performance at retrieval scale and surfaces the top candidates at over one ... The post Meta Andromeda: Powering the Next Generation of Ads Retrieval Through Model-System Co-Design https://engineering.fb.com/2026/10/28/ml-applications/meta-andromeda-next-gen-ads-retrieval-gpu-co-design/ appeared first on Engineering at Meta https://engineering.fb.com .