Meta Large Language Model Compiler (LLM Compiler-13b), built upon Code Llama, is an advanced large language model specializing in code optimization and compiler inference. It demonstrates superior understanding of compiler optimization tasks compared to existing publicly available large language models, capable of accurately simulating compiler outputs 20% faster. LLM Compiler offers two model sizes: 7B and 13B parameters, each trained to address different service and latency requirements. This model is free to use for both research and commercial purposes, aiming to support compiler researchers and engineers and inspire the development of innovative tools.