ERNIE-4.5-VL-28B-A3B-Thinking is Baidu's reasoning-focused model that takes a deliberate, step-by-step approach to complex problems, visibly working through its logic before arriving at answers. Despite its 28B parameter count, it uses a sparse 3B active parameter architecture, meaning it punches above its weight in efficiency. It handles text-based reasoning tasks with methodical thoroughness, though its vision capabilities aren't accessible via the current API configuration.