Llama 2 13b Chat Hf is a 13-billion-parameter language model published on Hugging Face by Meta. It belongs to the class of foundation models and is provided as open weights for download and local use. The repository includes a chat template that structures multi-turn conversations by alternating user and assistant roles, inserting special system-message delimiters when present, and applying BOS and EOS tokens around each turn.
The included chat template enforces strict alternation between user and assistant messages and raises an exception if the order is violated. It prepends a system prompt wrapped in <<SYS and <</SYS tags to the first user message when a system role appears at the start of the conversation. The template uses the model's BOS token before each user instruction and the EOS token after each assistant response.
The model is delivered as a repository on the Hugging Face platform, where it can be loaded through the Hugging Face ecosystem for inference or further training. No pricing information is stated for the model weights themselves. The surrounding Hugging Face site offers both free and paid tiers for related services such as inference endpoints, but these are separate from the model card.
Meta publishes the weights to support open-source and open-science efforts in artificial intelligence.
In the Foundation models & chat space, Llama 2 13b Chat Hf takes a focused approach. It focuses on accessing and running a capable open-source instruction-tuned language model locally or via API without proprietary restrictions. It is built as an open-source project for developers. Llama 2 13b Chat Hf is open source under the Open Source license. Llama 2 13b Chat Hf is available on the web, the command line, and API.
It is developed by Meta (United States), and the product first shipped in 2023. Development happens publicly on GitHub with 59.5k stars. Key capabilities include chat template, instruction tuned, and open weights.
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