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What Are The Main Differences Between LLaMA 2 And LLaMA 3?

The main differences between LLaMA 2 and LLaMA 3 can be summarized as follows:

  1. Model Size and Parameters: LLaMA 3 introduces larger model sizes, including an 8 billion, 70 billion, and a 400 billion parameter model, compared to LLaMA 2's 7 billion, 13 billion, and 70 billion parameters.

  2. Training Data: LLaMA 3 is trained on over 15 trillion tokens, which is more than seven times the amount used for LLaMA 2. This includes a significant increase in non-English text and code data, enhancing its multilingual and code generation capabilities.

  3. Context Window: LLaMA 3 supports a larger context window of 8,000 tokens, compared to LLaMA 2's 4,000 tokens, allowing it to handle longer sequences of text more effectively.

  4. Tokenization and Vocabulary: LLaMA 3 transitions to OpenAI’s Tiktoken for tokenization, with a vocabulary of 128,000 tokens, enhancing its efficiency and performance in processing text.

  5. Architectural Enhancements: LLaMA 3 incorporates Grouped Query Attention (GQA) for improved inference efficiency and maintains minimal architectural differences from LLaMA 2, focusing on enhancements that support larger context windows.

  6. Performance Improvements: LLaMA 3 shows significant improvements in reasoning, code generation, and response diversity. It outperforms LLaMA 2 in benchmarks like ARC and DROP, and its post-training techniques have enhanced response quality and alignment.

  7. Safety and Alignment: LLaMA 3 introduces advanced safety tools like LLAMA Guard 2 and Code Shield, and has been fine-tuned with a carefully curated dataset to improve alignment and output quality.

  8. Deployment and Accessibility: LLaMA 3 is available on major cloud platforms such as AWS, Google Cloud, and Microsoft Azure, and is integrated into Meta’s platforms like Facebook Messenger, Instagram, and WhatsApp.

  9. Efficiency and Cost Optimization: LLaMA 3 is optimized for lower cost and higher performance in AI inference, utilizing advanced training stacks and hardware reliability improvements to enhance training efficiencies.

These advancements make LLaMA 3 a more powerful and versatile model compared to LLaMA 2, with enhanced capabilities in language understanding, reasoning, and safety.

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