# S2 | x-ai/grok-4.3 | run 1

## Prompt

Give me a one-sentence definition of 'opportunity cost.'

## Response

Opportunity cost is the value of the best alternative forgone when a particular choice is made. It captures the trade-off inherent in every decision by quantifying what is sacrificed. 

This principle applies across economics, business, and personal choices to reveal hidden costs beyond direct expenses.
