Have you heard of the Needle In a Haystack Test? My latest piece in partnership with Aparna Dhinakaran, Co-Founder of Arize AI, covers the ins and outs of the test for evaluating the performance of LLM RAG systems across different sizes of context, summarizing the great work from Greg Kamradt and adding to it with new research. The main takeaways from the research: • Not all LLMs are the same. Models are trained with different objectives and requirements in mind. For example, Anthropic's Claude is known for being a slightly wordier model, which often stems from its objective to not make unsubstantiated claims. • Minute differences in prompts can lead to drastically different outcomes across models due to this fact. Some LLMs need more tailored prompting to perform well at specific tasks. • When building on top of LLMs – especially when those models are connected to private data – it is necessary to evaluate retrieval and model performance throughout development and deployment. Seemingly insignificant differences can lead to incredibly large differences in performance, and in turn, customer satisfaction. Read on more for context: https://arize.com/blog-course/the-needle-in-a-haystack-test-evaluating-the-performance-of-llm-rag-systems/