Google's Gemma 2 is an advanced model available in three sizes—2B, 9B, and 27B parameters—featuring a new architecture that aims to deliver top-tier performance and efficiency. Notably, the 27 billion parameter variant surpasses the performance of models more than twice its size, setting a new benchmark in the open model field. The model can be run using specific commands for each size, and it is compatible with popular tools like LangChain and LlamaIndex, enabling users to implement it in various applications by invoking or completing tasks such as answering questions.