How to Select the Right LLM for Your Generative AI Use Case. Choosing the right Large Language Model (LLM) for your Generative AI application can be daunting. With numerous options available—OpenAI’s GPT, Meta’s LLaMA, Google’s Gemini, Hugging Face models, and others—it’s crucial to evaluate your options carefully. A poor choice can lead to scalability issues, poor performance, or excessive operational costs.