Llama 2, developed by Meta, emerges as an open-source behemoth in the realm of large language models. This exceptional tool is generously available to users at no cost, serving both research and commercial endeavors. In the domain of next-generation models, Llama 2 boasts a remarkable arsenal of pretrained and fine-tuned language models, ranging from 7 billion to a staggering 70 billion parameters.
The pretrained models, a product of training on a staggering 2 trillion tokens, usher in a new era with double the context length compared to its predecessor, Llama 1. The fine-tuned variants, forged through the crucible of over 1 million human annotations, represent a pinnacle of linguistic excellence.
Llama 2 sets a soaring benchmark, eclipsing its open-source contemporaries across a multitude of external benchmarks. These encompass diverse domains such as reasoning, coding prowess, linguistic proficiency, and knowledge assessments.
This model draws its wisdom from publicly accessible online data sources for pretraining. In the fine-tuning phase, it harnesses publicly available instructional datasets, enriched by over 1 million annotations painstakingly curated by human experts.
Meta’s commitment to an open approach is evident through strategic partnerships with cloud providers, enterprises, and researchers who share their vision. They collectively aim to foster a responsible and collaborative AI innovation ecosystem. A suite of resources underscores this commitment, including a comprehensive Responsible Use Guide tailored for developers, rigorous safety red-teaming to elevate performance and safety standards, an Open Innovation AI Research Community designed to engage academic researchers, and the trailblazing Llama Impact Challenge—a clarion call for utilizing Llama 2 to tackle pressing environmental and educational challenges.
Meta maintains a vibrant Generative AI Community Forum in collaboration with the esteemed Stanford Deliberative Democracy Lab and the Behavioral Insights Team. This forum serves as a cornerstone for involving the community in shaping the trajectory of generative AI technologies through participatory decision-making.
Accessing the transformative capabilities of Llama 2 is as straightforward as completing a download form, accompanied by an agreement to adhere to Meta’s privacy policy. A trove of supplementary resources, including a technical exposé, a research paper, and an illuminating blog post, stands ready to offer profound insights into Llama 2 and its responsible utilization.