AI Diagnostic Assistant collects patient-reported symptoms through a simple interface and sends them to a configured LLM (such as GPT-3.5 or GPT-4). It analyzes the input to generate a list of possible medical conditions, provides probability rankings, severity assessments, and suggested actions. The tool can output a structured report for further review and can be extended with custom prompts, integration modules, or alternate LLM endpoints. It is designed for rapid prototyping and preliminary diagnostic support, not as a substitute for professional medical evaluation.