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Auteurs principaux: Langlais, Pierre-Carl, Chizhov, Pavel, Nee, Mattia, Hinostroza, Carlos Rosas, Delsart, Matthieu, Girard, Irène, Hicheur, Othman, Stasenko, Anastasia, Yamshchikov, Ivan P.
Format: Preprint
Publié: 2025
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Accès en ligne:https://arxiv.org/abs/2504.18225
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author Langlais, Pierre-Carl
Chizhov, Pavel
Nee, Mattia
Hinostroza, Carlos Rosas
Delsart, Matthieu
Girard, Irène
Hicheur, Othman
Stasenko, Anastasia
Yamshchikov, Ivan P.
author_facet Langlais, Pierre-Carl
Chizhov, Pavel
Nee, Mattia
Hinostroza, Carlos Rosas
Delsart, Matthieu
Girard, Irène
Hicheur, Othman
Stasenko, Anastasia
Yamshchikov, Ivan P.
contents We introduce a new generation of small reasoning models for RAG, search, and source summarization. Pleias-RAG-350m and Pleias-RAG-1B are mid-trained on a large synthetic dataset emulating the retrieval of a wide variety of multilingual open sources from the Common Corpus. They provide native support for citation and grounding with literal quotes and reintegrate multiple features associated with RAG workflows, such as query routing, query reformulation, and source reranking. Pleias-RAG-350m and Pleias-RAG-1B outperform SLMs below 4 billion parameters on standardized RAG benchmarks (HotPotQA, 2wiki) and are competitive with popular larger models, including Qwen-2.5-7B, Llama-3.1-8B, and Gemma-3-4B. They are the only SLMs to date maintaining consistent RAG performance across leading European languages and ensuring systematic reference grounding for statements. Due to their size and ease of deployment on constrained infrastructure and higher factuality by design, the models unlock a range of new use cases for generative AI.
format Preprint
id arxiv_https___arxiv_org_abs_2504_18225
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Even Small Reasoners Should Quote Their Sources: Introducing the Pleias-RAG Model Family
Langlais, Pierre-Carl
Chizhov, Pavel
Nee, Mattia
Hinostroza, Carlos Rosas
Delsart, Matthieu
Girard, Irène
Hicheur, Othman
Stasenko, Anastasia
Yamshchikov, Ivan P.
Computation and Language
We introduce a new generation of small reasoning models for RAG, search, and source summarization. Pleias-RAG-350m and Pleias-RAG-1B are mid-trained on a large synthetic dataset emulating the retrieval of a wide variety of multilingual open sources from the Common Corpus. They provide native support for citation and grounding with literal quotes and reintegrate multiple features associated with RAG workflows, such as query routing, query reformulation, and source reranking. Pleias-RAG-350m and Pleias-RAG-1B outperform SLMs below 4 billion parameters on standardized RAG benchmarks (HotPotQA, 2wiki) and are competitive with popular larger models, including Qwen-2.5-7B, Llama-3.1-8B, and Gemma-3-4B. They are the only SLMs to date maintaining consistent RAG performance across leading European languages and ensuring systematic reference grounding for statements. Due to their size and ease of deployment on constrained infrastructure and higher factuality by design, the models unlock a range of new use cases for generative AI.
title Even Small Reasoners Should Quote Their Sources: Introducing the Pleias-RAG Model Family
topic Computation and Language
url https://arxiv.org/abs/2504.18225