Llama3-ChatQA-1.5-8B is an advanced conversational question-answering and retrieval-augmented generation (RAG) model developed by NVIDIA. Improved upon ChatQA (1.0), it enhances its tabular and arithmetic calculation capabilities by adding conversational question-answering data. It comes in two variants: Llama3-ChatQA-1.5-8B and Llama3-ChatQA-1.5-70B, both trained using Megatron-LM and converted to Hugging Face format. The model excels in the benchmark tests of ChatRAG Bench, suitable for scenarios requiring complex conversational understanding and generation.