The text explores the potential integration of feature stores with language model applications, specifically focusing on how feature stores can enhance prompt construction by incorporating real-time, user-specific data. In traditional machine learning, feature stores centralize and serve engineered features to models, a concept that could be adapted to provide personalized prompts for language models, despite many applications currently relying on pre-trained large language models (LLMs) rather than training from scratch. The discussion highlights various prompt construction strategies, from hard-coded strings to those incorporating user input and external data, suggesting that feature stores can enrich these prompts by providing complex, real-time information. This approach is demonstrated using examples from feature stores like Feast, Tecton, and FeatureForm, indicating a future where language model applications leverage real-time data to offer more personalized and contextually aware experiences, such as chatbots with real-time awareness, personalized marketing content, and tailored recommendations.