Llama 2
by Meta AI
Meta's open-source large language model family available for research and commercial use
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About
Llama 2 is a collection of pretrained and fine-tuned large language models released by Meta AI as open-source, available for both research and commercial use. Ranging from 7 billion to 70 billion parameters, Llama 2 represents one of the most significant open-source model releases in AI history, giving the developer community access to powerful models that previously only existed behind commercial APIs.
The fine-tuned versions (Llama-2-Chat) are optimized for dialogue and perform comparably to many closed-source models on standard benchmarks. Meta invested heavily in safety, training the models with Reinforcement Learning from Human Feedback (RLHF) and red-teaming to reduce harmful outputs. The release of Llama 2 democratized access to powerful language models, enabling researchers, startups, and developers worldwide to build and experiment without API costs.
Llama 2 has spawned an enormous ecosystem of derivative models, fine-tuned variants, and applications. It can be run locally on consumer hardware (in quantized form), deployed in private cloud environments, or fine-tuned on proprietary data. The Llama series has since been succeeded by Llama 3, maintaining Meta's commitment to open-source AI.
The fine-tuned versions (Llama-2-Chat) are optimized for dialogue and perform comparably to many closed-source models on standard benchmarks. Meta invested heavily in safety, training the models with Reinforcement Learning from Human Feedback (RLHF) and red-teaming to reduce harmful outputs. The release of Llama 2 democratized access to powerful language models, enabling researchers, startups, and developers worldwide to build and experiment without API costs.
Llama 2 has spawned an enormous ecosystem of derivative models, fine-tuned variants, and applications. It can be run locally on consumer hardware (in quantized form), deployed in private cloud environments, or fine-tuned on proprietary data. The Llama series has since been succeeded by Llama 3, maintaining Meta's commitment to open-source AI.
Product Features
- Models from 7B to 70B parameters
- Pretrained and fine-tuned (chat) variants
- Commercial use license for most applications
- RLHF-trained for safety and helpfulness
- Supports 4096 token context length
- Quantized versions for consumer GPU and CPU
- Fine-tunable on custom datasets
- Compatible with all major inference frameworks
- Available on Hugging Face, AWS, and Azure
- Strong multilingual capabilities
- Pretrained and fine-tuned (chat) variants
- Commercial use license for most applications
- RLHF-trained for safety and helpfulness
- Supports 4096 token context length
- Quantized versions for consumer GPU and CPU
- Fine-tunable on custom datasets
- Compatible with all major inference frameworks
- Available on Hugging Face, AWS, and Azure
- Strong multilingual capabilities
About the Publisher
Meta AI is the artificial intelligence research division of Meta Platforms (formerly Facebook). Founded as FAIR (Facebook AI Research) in 2013, Meta AI has made seminal contributions to deep learning, computer vision, NLP, and generative models. Under Yann LeCun's leadership as Chief AI Scientist, Meta AI has committed to an open research philosophy, releasing numerous models and frameworks as open-source. The Llama model series represents Meta's most significant AI release and has had an enormous impact on the global AI development ecosystem.