Prompt-R1: Collaborative Automatic Prompting Framework via End-to-end Reinforcement Learning

• URL: http://arxiv.org/abs/2511.01016v1
• Date: Sun, 02 Nov 2025 17:11:03 GMT
• Title: Prompt-R1: Collaborative Automatic Prompting Framework via End-to-end Reinforcement Learning
• Abstract summary: We propose Prompt-R1, an end-to-end reinforcement learning framework that uses a small-scale language model to collaborate with large-scale language models.<n>A dual-constrained reward is designed to optimize for correctness, generation quality, and reasoning accuracy.<n>Prompt-R1 significantly outperforms baseline models across tasks.
• Score: 34.70213312250216
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Recently, advanced large language models (LLMs) have emerged at an increasingly rapid pace. However, when faced with complex problems, most users are often unable to provide accurate and effective prompts to interact with LLMs, thus limiting the performance of LLMs. To address this challenge, we propose Prompt-R1, an end-to-end reinforcement learning framework that uses a small-scale LLM to collaborate with large-scale LLMs, replacing user interaction to solve problems better. This collaboration is cast as a multi-turn prompt interaction, where the small-scale LLM thinks and generates prompts, and the large-scale LLM performs complex reasoning. A dual-constrained reward is designed to optimize for correctness, generation quality, and reasoning accuracy. Prompt-R1 provides a plug-and-play framework that supports both inference and training with various large-scale LLMs. Experiments on multiple public datasets show that Prompt-R1 significantly outperforms baseline models across tasks. Our code is publicly available at https://github.com/QwenQKing/Prompt-R1.

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