Elon Musk’s xAI launched Grok 4 in July 2025, claiming the title of the world’s smartest AI during a livestream. The company’s confidence is backed by benchmark results: Grok 4 achieved a perfect 100% on the AIME math test and 44.4% on Humanity’s Last Exam, far ahead of Gemini 2.5 Pro’s 26.9% and OpenAI’s o3 at 21%. These scores underscore Grok 4’s leap in reasoning and problem-solving, with the AIME (American Invitational Mathematics Examination) being a rigorous math contest that even top high school students rarely master. xAI’s technological leap is powered by its 200,000-GPU Colossus cluster and advanced reinforcement learning techniques, enabling Grok 4 to refine its reasoning at unprecedented scale. Since its founding in March 2023, xAI built Grok 4 in just 28 months, outpacing larger and more established rivals. Grok 4’s performance extends beyond math. On the GPQA science benchmark, it scored 88.9%, topping Claude 4 Opus’s 79.6%. Its coding model reached 75% on the SWE-Bench test, surpassing o3’s 71.7%. These results mark Grok 4 as a leader in scientific reasoning and software engineering, with practical impacts already visible. The ARCA Institute leverages Grok 4 for biomedical research, automating gene editing workflows and medical image analysis. Grok 4’s capabilities also reach creative and enterprise domains. It can create a functional video game in just four hours, handling coding and asset generation, and aims to produce full-length movies by 2026. Grok 4: xAI’s A.I. Sets New Standards and Raises the Stakes Such speed and versatility showcase its potential for rapid content creation and business innovation. xAI offers Grok 4 through a $3 per million token API, supporting context windows up to 256,000 tokens, making it attractive for developers and enterprises. The premium SuperGrok Heavy tier, priced at $300 per month, provides access to Grok 4 Heavy, a multi-agent version optimized for complex reasoning and planning, though this price may exclude smaller firms. Despite its advances, Grok 4 faces stiff competition. Google’s Gemini 3 and OpenAI’s GPT-5 are racing to match or surpass its capabilities, but xAI’s lean team and $10 billion investment in compute infrastructure provide a significant advantage. Global GPU shortages remain a constraint, yet xAI plans a 100,000-GPU video model to further enhance simulation and self-driving technology research. As businesses increasingly look to Grok 4’s API for new revenue streams, xAI’s rapid, cost-effective approach intensifies pressure on slower competitors. The company’s ambitions extend to physics breakthroughs by 2026, signaling a relentless drive to push AI boundaries. Grok 4’s rise marks a turning point in the AI race, where speed, efficiency, and practical impact define leadership in a tightly contested market.