Compare Llama 2 vs. PaLM 2

Introducing the next iteration of our open-source large language model, this version features model weights along with initial code for the pretrained and fine-tuned Llama language models, which span from 7 billion to 70 billion parameters. The Llama 2 pretrained models have been developed using an impressive 2 trillion tokens and offer double the context length compared to their predecessor, Llama 1. Furthermore, the fine-tuned models have been enhanced through the analysis of over 1 million human annotations. Llama 2 demonstrates superior performance against various other open-source language models across multiple external benchmarks, excelling in areas such as reasoning, coding capabilities, proficiency, and knowledge assessments. For its training, Llama 2 utilized publicly accessible online data sources, while the fine-tuned variant, Llama-2-chat, incorporates publicly available instruction datasets along with the aforementioned extensive human annotations. Our initiative enjoys strong support from a diverse array of global stakeholders who are enthusiastic about our open approach to AI, including companies that have provided valuable early feedback and are eager to collaborate using Llama 2. The excitement surrounding Llama 2 signifies a pivotal shift in how AI can be developed and utilized collectively.

PaLM 2 represents the latest evolution in large language models, continuing Google's tradition of pioneering advancements in machine learning and ethical AI practices. It demonstrates exceptional capabilities in complex reasoning activities such as coding, mathematics, classification, answering questions, translation across languages, and generating natural language, surpassing the performance of previous models, including its predecessor PaLM. This enhanced performance is attributed to its innovative construction, which combines optimal computing scalability, a refined mixture of datasets, and enhancements in model architecture. Furthermore, PaLM 2 aligns with Google's commitment to responsible AI development and deployment, having undergone extensive assessments to identify potential harms, biases, and practical applications in both research and commercial products. This model serves as a foundation for other cutting-edge applications, including Med-PaLM 2 and Sec-PaLM, while also powering advanced AI features and tools at Google, such as Bard and the PaLM API. Additionally, its versatility makes it a significant asset in various fields, showcasing the potential of AI to enhance productivity and innovation.