Surgeons now have a new, validated tool to assess the complexity of robotic liver surgery, improving patient selection and outcomes.

• The International RoboLiver Difficulty Scoring System outperformed the Southampton model with an AUC of 0.719, indicating better prediction of intraoperative complications.
• Key predictors of prolonged operative time include neoadjuvant chemotherapy, lesion size >50 mm, and bilobar disease.

This tool aids in preoperative planning and enhances operational efficiency in robotic liver procedures.