Fact-checked Jul 4, 2026
Also called: Llama 2, Llama 3, Meta Llama
Llama is a family of powerful large language models developed by Meta AI, known for their relatively open access which allows researchers and developers to build and innovate with them.
Llama refers to a series of large language models (LLMs) created by Meta AI, the artificial intelligence research division of Meta Platforms. These models are designed to understand and generate human language, much like other leading LLMs. What makes Llama particularly significant is Meta's approach to its distribution. Instead of keeping the models entirely proprietary, Meta has released Llama and its subsequent versions with licenses that allow broad access for research and commercial use, albeit with certain restrictions for very large companies.
The development of Llama has been a game changer for the open-source AI community. While not strictly "open source" in the purest sense, the accessible licenses for Llama 2 and Llama 3 have enabled a massive wave of innovation. Developers and researchers around the world can download the model weights, inspect their inner workings, and fine-tune them for specific tasks. This has accelerated research into LLM capabilities, reduced reliance on a few dominant proprietary models, and fostered a vibrant ecosystem of custom AI applications.
Each iteration of Llama, from the original Llama to Llama 2 and the latest Llama 3, has brought improvements in performance, safety, and capabilities. These models are trained on vast amounts of text and code data, allowing them to perform a wide range of tasks such as answering questions, summarizing text, generating creative content, and assisting with coding. Because the models can be run locally or on private infrastructure, they offer more control over data privacy and customization compared to cloud-based proprietary alternatives.
You might encounter Llama in many places, from research papers exploring new AI techniques to commercial products that have been built using a fine-tuned Llama model as their core. Many AI startups and developers use Llama as a foundational model to create specialized chatbots, content generators, or language understanding tools. A common misconception is that Llama is entirely public domain or fully open source; while its license is permissive, it still carries specific terms, especially for large-scale commercial deployments, and users need to be aware of these legal details.
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