arXiv Machine Learning By Nils Strassenburg, Boris Glavic, Tilmann Rabl

Poodle: Seamlessly Scaling Down Large Language Models with Just-in-Time Model Replacement

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The paper introduces Poodle, a prototype for just‑in‑time model replacement (JITR) that automatically swaps a large language model with a cheaper, task‑specific model when a recurring task is detected. Poodle reduces inference time by up to 7.5× and saves over $2,200 per 1 M requests compared to a flagship hosted LLM, while maintaining competitive accuracy. The authors argue that model search and transfer learning are essential for efficiently identifying and fine‑tuning these custom models.

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