Llama 2-7|13|70B
FreeOpen-source large language models for research and commercial use
FreeFree tier
Inputs: textOutputs: text
About Llama 2-7|13|70B
Llama 2 is a collection of pretrained and fine-tuned large language models (LLMs) developed by Meta. Ranging from 7 billion to 70 billion parameters, Llama 2 models are designed for research and commercial use, offering strong performance across a wide range of natural language tasks. The models are open-source and freely available, with a significantly expanded context length of 4096 tokens compared to the original Llama. Llama 2 includes both base (pretrained) and chat (fine-tuned for dialogue) variants, and has demonstrated competitive results against other open-source models like Falcon and MPT.
Key Features
Available in 7B, 13B, and 70B parameter sizes
4096 token context window (doubled from original Llama)
Pretrained and chat fine-tuned variants
Free for research and commercial use
Optimized for dialogue and assistant tasks
Trained on 2 trillion tokens of publicly available data
Supports finetuning and deployment via multiple frameworks
Pros & Cons
Pros
- Completely free and open-source
- Strong performance on reasoning and coding benchmarks
- Large context window (4096 tokens) for better long-form understanding
- Multiple model sizes to fit different compute budgets
- Commercial use allowed under acceptable use policy
- Active community and extensive documentation
Cons
- Requires significant computational resources for larger models (especially 70B)
- Not as capable as proprietary models like GPT-4 on complex reasoning tasks
- Limited context length compared to some newer models (e.g., GPT-4 Turbo with 128K)
- May produce biased or unsafe outputs without proper fine-tuning
- No built-in multimodal capabilities (text-only)
Best For
Conversational AI and chatbotsText summarization and generationCode generation and assistanceResearch in natural language processingContent creation and editingQuestion answering and knowledge retrievalCustomer support automation
FAQ
What is Llama 2?
Llama 2 is a family of open-source large language models developed by Meta, ranging from 7 billion to 70 billion parameters, designed for research and commercial use.
Is Llama 2 free to use?
Yes, Llama 2 is completely free for both research and commercial use under the Llama 2 Community License.
What model sizes are available?
Llama 2 is available in three sizes: 7B, 13B, and 70B parameters, each with pretrained and chat fine-tuned versions.
How long is the context window?
Llama 2 supports a context length of 4096 tokens, double that of the original Llama model.