Prompt Engineering is an emerging field that helps guide the behavior of large language models (LLMs) without updating their weights. Various prompts have been developed for different use-cases, including reasoning, writing, SQL querying, brainstorming, extraction, retrieval augmented generation, instruction-tuned LLMs, LLM graders, synthetic data generation, code understanding and generation, and summarization. The LangChain Hub serves as a home for community prompts and personal prompt management.