The Elon Musk-backed AI startup unveiled its latest Grok-3 artificial intelligence chatbot claimed to outperform other U.S. or Chinese competitors.

According to xAI’s blog, Grok 3 leverages Test-Time Compute at Scale (TTCS), a specific implementation of test-time scaling, to power its reasoning. This machine learning strategy enables the A.I. model to dynamically adjust computational resources, ensuring higher accuracy for complex queries while maintaining speed for simpler tasks.

While company owner Elon Musk expanded on that a bit during an official Grok 3 launch video on the social media platform, one key detail was omitted: the price. It has now been revealed that X’s highest level subscription tier – X Premium+ – has been increased substantially in price, with US users required to pay $40 each month for its benefits.