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

> Source: <https://engineering.fb.com/2026/10/28/ml-applications/meta-andromeda-next-gen-ads-retrieval-gpu-co-design/>
> Published: 2026-10-28 16:00:01+00:00

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).