But accuracy cannot exceed 100%.

Tue, 05 May 2026 01:16:19 +0000

Why Accuracy Cannot Exceed 100%: Understanding Limits in Data and AI Performance In an era driven by data, artificial intelligence, and real-time decision-making, the promise of perfect accuracy often captures attention. However, an essential truth remains: accuracy cannot exceed 100%. Whether in machine learning models, statistical analysis, or human perception, perfection in prediction or measurement is unattainable. Understanding why accuracy caps at 100% is crucial for setting realistic expectations, improving systems, and fostering trust in technology. ### What Is Accuracy? Accuracy is a metric that measures the correctness of predictions or classifications relative to actual outcomes. Typically expressed as the ratio of correct predictions to total predictions, accuracy provides clarity but also conceals complexity. For example, a model labeled “95% accurate” means 95 out of 100 instances were correctly identified—but still 5 are misclassified.