Stage Companion is an innovative GPT developed to function as an AI scene partner for actors with a primary focus on providing dynamic responses and constructive feedback during rehearsals. This cutting-edge technology aims to bridge the gap between human actors and AI enhancing acting practices with its sophisticated features. The tool is equipped to handle a wide range of scenarios from 1940s detective office settings to comedic improvisations as well as emotionally charged dramatic scenes. Notably Stage Companion offers feedback on line delivery allowing actors to assess their performances objectively and make necessary adjustments. Its adaptability and versatility make it a valuable resource for actors seeking to explore diverse scenarios and challenging scripts. In essence Stage Companion provides actors with an interactive rehearsal space where they can practice scenes run lines and receive real-time feedback. Please note that the tool requires ChatGPT Plus for operation and is part of a growing ecosystem of AI applications catering to various needs.