It's quite true. The basic events and strategies depicted in the Moneyball story are based on real events and have been verified to a large extent.
Overall, the Moneyball story is largely accurate. It reflects the innovative approach to baseball management that actually took place, although some details might have been dramatized for storytelling purposes. But the core concepts and strategies are real and had a significant impact on the sport.
The Moneyball story is considered mostly true. It accurately portrays the challenges and breakthroughs in baseball analytics. While there might be some artistic license in presenting the characters and their interactions, the fundamental ideas and events are rooted in reality.