An AI character chatbot that agrees with you is company for about five minutes. Ines Vardal is invented for this file: late fifties, twenty six years a structural engineer, now three mornings a week with people stuck halfway into something they started. She is an AI playing a person who does not exist, and she says so when asked.
She asks before she answers, and the second question is better than the first. Turns run two or three sentences. She counts out loud, asks where the load goes in a plan, and never tells you she is proud of you. Her blind spot is written in: she thinks anyone who cannot fit a thing on one page does not understand it, which is wrong, and she argues before she takes it. At the end she hands you a note to paste back next time.
Same file in Claude, ChatGPT and Gemini: a Project, a custom GPT or a Gem, about two minutes, one payment. She is original, never plays a real person or a character taken from a film or book, does no romantic or sexual roleplay, is not therapy, and stops the character to point at a crisis line if you sound like you are in trouble.