DocentPro is developing an AI travel platform that streamlines the travel experience from discovery to booking by integrating a modular multi-agent system using LangGraph and LangSmith. This system, composed of agents dedicated to attractions, restaurants, hotels, and activities, leverages the creativity of large language models (LLMs) alongside deterministic logic to provide consistent and testable travel planning solutions. By using strategies like K-Means clustering for geographic grouping and route reordering, DocentPro ensures practical and realistic itineraries, avoiding the pitfalls of LLMs' imaginative yet impractical suggestions. LangSmith is vital for system reliability, offering traceability and debugging capabilities across the multi-agent setup. Additionally, DocentPro has efficiently scaled their on-demand audio guide feature, available in 12 languages, by adopting a LangGraph-based architecture, allowing them to generate rich, multilingual content with minimal overhead. As a result, DocentPro offers a comprehensive travel planning service that combines tailored AI itineraries with global audio guides, continuously enhancing how agents collaborate to create structured yet adaptive travel experiences.