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Autores principales: Feng, Shangbin, Panaganti, Kishan, Tsvetkov, Yulia, Yu, Wenhao
Formato: Preprint
Publicado: 2026
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Acceso en línea:https://arxiv.org/abs/2602.05182
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author Feng, Shangbin
Panaganti, Kishan
Tsvetkov, Yulia
Yu, Wenhao
author_facet Feng, Shangbin
Panaganti, Kishan
Tsvetkov, Yulia
Yu, Wenhao
contents Model collaboration -- systems where multiple language models (LMs) collaborate -- combines the strengths of diverse models with cost in loading multiple LMs. We improve efficiency while preserving the strengths of collaboration by distilling collaborative patterns into a single model, where the model is trained on the outputs of the model collaboration system. At inference time, only the distilled model is employed: it imitates the collaboration while only incurring the cost of a single model. Furthermore, we propose the single-multi evolution loop: multiple LMs collaborate, each distills from the collaborative outputs, and these post-distillation improved LMs collaborate again, forming a collective evolution ecosystem where models evolve and self-improve by interacting with an environment of other models. Extensive experiments with 7 collaboration strategies and 15 tasks (QA, reasoning, factuality, etc.) demonstrate that: 1) individual models improve by 8.0% on average, absorbing the strengths of collaboration while reducing the cost to a single model; 2) the collaboration also benefits from the stronger and more synergistic LMs after distillation, improving over initial systems without evolution by 14.9% on average. Analysis reveals that the single-multi evolution loop outperforms various existing evolutionary AI methods, is compatible with diverse model/collaboration/distillation settings, and helps solve problems where the initial model/system struggles to.
format Preprint
id arxiv_https___arxiv_org_abs_2602_05182
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle The Single-Multi Evolution Loop for Self-Improving Model Collaboration Systems
Feng, Shangbin
Panaganti, Kishan
Tsvetkov, Yulia
Yu, Wenhao
Computation and Language
Model collaboration -- systems where multiple language models (LMs) collaborate -- combines the strengths of diverse models with cost in loading multiple LMs. We improve efficiency while preserving the strengths of collaboration by distilling collaborative patterns into a single model, where the model is trained on the outputs of the model collaboration system. At inference time, only the distilled model is employed: it imitates the collaboration while only incurring the cost of a single model. Furthermore, we propose the single-multi evolution loop: multiple LMs collaborate, each distills from the collaborative outputs, and these post-distillation improved LMs collaborate again, forming a collective evolution ecosystem where models evolve and self-improve by interacting with an environment of other models. Extensive experiments with 7 collaboration strategies and 15 tasks (QA, reasoning, factuality, etc.) demonstrate that: 1) individual models improve by 8.0% on average, absorbing the strengths of collaboration while reducing the cost to a single model; 2) the collaboration also benefits from the stronger and more synergistic LMs after distillation, improving over initial systems without evolution by 14.9% on average. Analysis reveals that the single-multi evolution loop outperforms various existing evolutionary AI methods, is compatible with diverse model/collaboration/distillation settings, and helps solve problems where the initial model/system struggles to.
title The Single-Multi Evolution Loop for Self-Improving Model Collaboration Systems
topic Computation and Language
url https://arxiv.org/abs/2602.05182