Minions: Cost-efficient Collaboration Between On-device and Cloud Language Models
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arXiv
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| Format: | Preprint |
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2025
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| author | Narayan, Avanika Biderman, Dan Eyuboglu, Sabri May, Avner Linderman, Scott Zou, James Re, Christopher |
| author_facet | Narayan, Avanika Biderman, Dan Eyuboglu, Sabri May, Avner Linderman, Scott Zou, James Re, Christopher |
| contents | We investigate an emerging setup in which a small, on-device language model (LM) with access to local data communicates with a frontier, cloud-hosted LM to solve real-world tasks involving financial, medical, and scientific reasoning over long documents. Can a local-remote collaboration reduce cloud inference costs while preserving quality? First, we consider a naive collaboration protocol where the local and remote models simply chat back and forth. Because only the local model reads the full context, this protocol achieves a 30.4x reduction in remote costs, but recovers only 87% of the performance of the frontier model. We identify two key limitations of this protocol: the local model struggles to (1) follow the remote model's multi-step instructions and (2) reason over long contexts. Motivated by these observations, we study an extension of this protocol, coined MinionS, in which the remote model decomposes the task into easier subtasks over shorter chunks of the document, that are executed locally in parallel. MinionS reduces costs by 5.7x on average while recovering 97.9% of the performance of the remote model alone. Our analysis reveals several key design choices that influence the trade-off between cost and performance in local-remote systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_15964 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Minions: Cost-efficient Collaboration Between On-device and Cloud Language Models Narayan, Avanika Biderman, Dan Eyuboglu, Sabri May, Avner Linderman, Scott Zou, James Re, Christopher Machine Learning Artificial Intelligence Computation and Language Distributed, Parallel, and Cluster Computing We investigate an emerging setup in which a small, on-device language model (LM) with access to local data communicates with a frontier, cloud-hosted LM to solve real-world tasks involving financial, medical, and scientific reasoning over long documents. Can a local-remote collaboration reduce cloud inference costs while preserving quality? First, we consider a naive collaboration protocol where the local and remote models simply chat back and forth. Because only the local model reads the full context, this protocol achieves a 30.4x reduction in remote costs, but recovers only 87% of the performance of the frontier model. We identify two key limitations of this protocol: the local model struggles to (1) follow the remote model's multi-step instructions and (2) reason over long contexts. Motivated by these observations, we study an extension of this protocol, coined MinionS, in which the remote model decomposes the task into easier subtasks over shorter chunks of the document, that are executed locally in parallel. MinionS reduces costs by 5.7x on average while recovering 97.9% of the performance of the remote model alone. Our analysis reveals several key design choices that influence the trade-off between cost and performance in local-remote systems. |
| title | Minions: Cost-efficient Collaboration Between On-device and Cloud Language Models |
| topic | Machine Learning Artificial Intelligence Computation and Language Distributed, Parallel, and Cluster Computing |
| url | https://arxiv.org/abs/2502.15964 |