# SilverTorch: Index as Model -- A New Retrieval Paradigm for Recommendation Systems

DevFeed: [SilverTorch: Index as Model -- A New Retrieval Paradigm for Recommendation Systems](<https://devfeed.tech/articles/silvertorch-index-as-model-a-new-retrieval-paradigm-for-recommendation-systems-22580.md>)

Original publisher: [Read original article](<https://engineering.fb.com/2026/05/26/ml-applications/silvertorch-index-as-model-new-retrieval-paradigm-recommendation-systems/>)

Author: Lei Chen; Yiyi Pan; Ivy Sun; Sha Meng; Cornelia Carapcea; Shilin Ding; Ram Ramanathan; Nipun Mathur; Hong Yan; Lars Backstrom

Published: 2026-05-26T16:00:01Z

Content type: article

Language: en

Sources: [Meta ML Applications](<https://devfeed.tech/sources/meta-ml-applications.md>)

Topics: [recommendation systems](<https://devfeed.tech/topics/recommendation-systems.md>), [Neural Network](<https://devfeed.tech/topics/neural-network.md>), [Architecture & Design](<https://devfeed.tech/topics/architecture-design.md>), [systems](<https://devfeed.tech/topics/systems.md>)

Tags: [compute](<https://devfeed.tech/tags/compute.md>), [efficiency](<https://devfeed.tech/tags/efficiency.md>), [engineering](<https://devfeed.tech/tags/engineering.md>), [meta](<https://devfeed.tech/tags/meta.md>), [ml-applications](<https://devfeed.tech/tags/ml-applications.md>), [model](<https://devfeed.tech/tags/model.md>), [recommendation-systems](<https://devfeed.tech/tags/recommendation-systems.md>), [research](<https://devfeed.tech/tags/research.md>), [retrieval](<https://devfeed.tech/tags/retrieval.md>), [systems](<https://devfeed.tech/tags/systems.md>)

## AI overview

Meta introduces SilverTorch, a unified model-based retrieval system for recommendation systems. It replaces separate retrieval microservices with modules in a single neural network, allowing more complex modeling and more candidates to be evaluated within a sub-100-millisecond target. The article reports up to 23.7x higher throughput and 20.9x greater compute cost efficiency than specified baseline approaches.

## Source excerpt

We're introducing SilverTorch, a reimagining of recommendation systems that unifies all retrieval components for user generated content under a unified architecture. SilverTorch shows up to 23.7x higher throughput compared to the state-of-the-art approaches. It's also showing 20.9x more compute cost efficiency compared to a CPU-based solution while also improving accuracy. Our research paper, "SilverTorch: A [...] Read More... The post SilverTorch: Index as Model -- A New Retrieval Paradigm for Recommendation Systems appeared first on Engineering at Meta.