  In recent years, the rise of Large Language Models (LLMs) has spurred a
growing demand for plug-and-play AI systems. Among the various AI techniques,
prompt engineering stands out as particularly significant. However, users often
face challenges in writing prompts due to the steep learning curve and
significant time investment, and existing automatic prompt engineering (APE)
models can be difficult to use. To address this issue, we propose PAS, an
LLM-based plug-and-play APE system. PAS utilizes LLMs trained on high-quality,
automatically generated prompt complementary datasets, resulting in exceptional
performance. In comprehensive benchmarks, PAS achieves state-of-the-art (SoTA)
results compared to previous APE models, with an average improvement of 6.09
points. Moreover, PAS is highly efficient, achieving SoTA performance with only
9000 data points. Additionally, PAS can autonomously generate prompt
augmentation data without requiring additional human labor. Its flexibility
also allows it to be compatible with all existing LLMs and applicable to a wide
range of tasks. PAS excels in human evaluations, underscoring its suitability
as a plug-in for users. This combination of high performance, efficiency, and
flexibility makes PAS a valuable system for enhancing the usability and
effectiveness of LLMs through improved prompt engineering.
