LLMO is another name for the same goal as GEO, with the emphasis on the model itself. The premise is that a large language model carries an internal representation of your brand built from its training data and from the sources it retrieves at answer time. LLMO is the work of improving that representation.
That work includes publishing clear, consistent facts about your product, earning mentions on the high-authority sources models trust, correcting inaccurate claims, and using structured data so the model can connect you to the right entity. The terms LLMO, GEO, and AEO are often used interchangeably; pick one and stay consistent internally.