技术规格

系统要求

不同量化方法和上下文大小的显存要求

Llama 3 70B

Meta Llama 3 70B is a 70-billion-parameter, decoder-only transformer language model developed by Meta. Released in April 2024, it is provided in both pre-trained and instruction-fine-tuned variants. The instruction-tuned model is specifically optimized for dialogue and assistant-style interactions, supporting a wide array of natural language understanding and generation tasks. These include conversational AI applications, creative content generation, code generation, text summarization, classification, and complex reasoning challenges. The model is made available for both commercial and research applications under the Meta Llama 3 Community License.

Architecturally, Llama 3 70B employs a standard decoder-only transformer design. A key innovation is its tokenizer, which features a vocabulary size of 128,000 tokens, contributing to enhanced language encoding efficiency and optimized inference. To further improve inference scalability and speed, the model integrates Grouped Query Attention (GQA). This attention mechanism is applied across both the 8B and 70B parameter versions of Llama 3. Initial training of the model was conducted on sequences up to 8,192 tokens. For the instruction-tuned variants, supervised fine-tuning (SFT) and reinforcement learning with human feedback (RLHF) were utilized to align model outputs with human preferences for helpfulness and safety.

The Llama 3 70B model is engineered for general-purpose applications, serving as a foundational technology that can be further adapted for domain-specific tasks. Its capabilities extend to powering advanced assistant functionalities, as demonstrated by its integration into Meta AI applications across various platforms. The model's design focuses on enabling developers to build diverse generative AI applications, from complex coding assistants to long-form text summarization tools, while offering control and flexibility in deployment environments, including on-premise, cloud, and local setups.