How to Do AI Prompt Engineering in LLM Apps

Prompt engineering in LLM apps is likened to software engineering, focusing on creating an interface between products, data, tools, models, and users that is robust, versioned, tested, and observable. A well-designed prompt should withstand diverse challenges such as messy inputs, model updates, and changing product requirements. The process begins by defining the application's desired behavior, decomposing complex prompts into structured components like task, rules, context, and output format, and employing examples to improve consistency without overfitting to specific scenarios. Business logic should be externalized from prompts to enhance testability and clarity. A systematic approach involves using prompt chains for complex workflows, accounting for model limitations, and employing evaluations to guide prompt iterations. Effective prompt engineering demands comprehensive traceability of production requests, version control, and integration with broader application design, ensuring adaptability and reliability in LLM-based applications.

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