OpenBioLLM-70B is a sophisticated open-source language model developed by Saama AI Labs, designed specifically for the biomedical field. The model has been fine-tuned on a substantial amount of high-quality biomedical data, enabling it to understand and generate text with domain-specific accuracy and fluency. It demonstrates superior performance over other similarly-sized open-source biomedical language models in biomedical benchmark tests and outperforms larger proprietary and open-source models like GPT-4, Gemini, Medtron-70B, Med-PaLM-1, and Med-PaLM-2.