The Instruction Adherence AI Metric is a tool designed to measure how effectively AI models follow given instructions, ensuring precision, security, and compliance. This metric evaluates whether AI outputs align with the original objectives, executing tasks as expected. It distinguishes between clear guidelines and subjective interpretations, helping prevent "hallucinations" - responses that deviate from facts. The metric is crucial for professionals in fields where accuracy is paramount, such as customer service, healthcare, and automated decision-making, where real-world AI task evaluation relies on consistency and reliability. Galileo's metric utilizes OpenAI's GPT-4 with chain-of-thought prompting to generate AI responses, evaluating each response with a clear "yes" or "no" to determine adherence to instructions. The adherence score ranges from 0 to 1, providing a measure of reliability and guiding developers in fine-tuning models to meet both technical specifications and user expectations.