Llama 2
FreeThe next generation of Meta's open source large language model. #opensource
FreeFree tier
Inputs: textOutputs: text
About Llama 2
Llama 2 is a collection of pretrained and fine-tuned large language models (LLMs) released by Meta AI. Available in sizes 7B, 13B, and 70B parameters, Llama 2 is designed for both research and commercial use. It leverages reinforcement learning from human feedback (RLHF) to improve safety and helpfulness, and supports various natural language understanding and generation tasks. The models are open-source, allowing developers to fine-tune them for specific applications, and are optimized for dialogue use cases. Llama 2 represents Meta's commitment to advancing open AI research.
Key Features
Open-source LLM available in 7B, 13B, and 70B parameter sizes
Trained on 2 trillion tokens of publicly available data
Fine-tuned with reinforcement learning from human feedback (RLHF)
Optimized for dialogue and instruction following
Free for research and commercial use (with some conditions)
Supports fine-tuning for custom applications
Available via Meta's website, Hugging Face, and other platforms
Pros & Cons
Pros
- Open-source with permissive commercial license
- Multiple model sizes to suit different computational budgets
- Strong performance on a wide range of benchmarks
- Active community support and extensive documentation
- Safety-focused RLHF training to reduce harmful outputs
Cons
- Requires significant GPU resources for larger models (70B)
- May still exhibit biases present in training data
- Not as powerful as some proprietary models (e.g., GPT-4) on complex tasks
- Limited context window compared to some newer models (4,096 tokens)
Best For
Building conversational AI chatbots and virtual assistantsText generation for content creation, summarization, and translationResearch in natural language processing and AI safetyFine-tuning for domain-specific tasks (e.g., medical, legal, customer support)Education and experimentation with large language models
FAQ
Is Llama 2 free to use?
Yes, Llama 2 is free for both research and commercial use. However, commercial use requires the monthly active users (MAU) of the service using Llama 2 to be less than 700 million at the time of access. If exceeded, a license from Meta is required.
What sizes of Llama 2 are available?
Llama 2 is available in 7B, 13B, and 70B parameter versions.
How was Llama 2 trained?
Llama 2 was pretrained on 2 trillion tokens of publicly available data and fine-tuned using supervised fine-tuning (SFT) and reinforcement learning from human feedback (RLHF) for better alignment and safety.
Can I fine-tune Llama 2?
Yes, Llama 2 is designed to be fine-tuned for custom tasks. Meta provides a codebase and instructions for fine-tuning.