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Models
Meta AI large language model family introduced in 2023.
LLaMA helped seed the open-weights ecosystem that competes with closed frontier labs.
Each fact carries its own source note. Draft and source-check labels mean the item should not be treated as a finished reference entry.
Meta AI introduced LLaMA on February 24, 2023.[1]
Meta and Microsoft introduced Llama 2 on July 18, 2023.[2]
Meta described LLaMA as a collection of foundation language models ranging up to 65 billion parameters.[1]
Meta said Llama 2 was available free of charge for research and commercial use.[2]
Meta said Microsoft was the preferred partner for Llama 2.[2]
Published 2023-02-24. Retrieved 2026-06-06.
Official Meta announcement of LLaMA for research access, including 7B, 13B, 33B, and 65B parameter sizes.
Published 2023-07-18. Retrieved 2026-06-07.
Official Meta announcement for Llama 2.