Training large language models (LLMs) requires high-quality data ingestion to ensure robust generative outputs. Data ingestion is a complex process involving collection, curation, preprocessing, and tokenization of natural language data. The quality and relevance of the training data directly impact the LLM's performance. Proper data preparation is crucial for foundation models and fine-tuning existing models for domain-specific tasks. Tools like Unstructured API help streamline data ingestion by connecting complex data hierarchies into clean JSON outputs, making it easier for organizations to leverage the power of LLMs in their operations.