Elon Musk, the CEO of Tesla, unveiled the latest artificial intelligence (AI) model 'Grok4' from his AI corporation xAI. Alongside, he announced the launch of a new AI subscription plan called 'SuperGrok Heavy' costing $300 per month on the 10th (local time).
xAI presented Grok4 via 'X (formerly Twitter) Live' on the 9th. Grok is xAI's AI chatbot designed to compete with models like OpenAI's ChatGPT and Google's Gemini, featuring image analysis and question-answering capabilities.
According to xAI, Grok4 achieved a correct answer rate of 25.4% on the 'Humanity's last exam,' a well-known AI benchmark, outperforming competing models like Google's Gemini 2.5 Pro (21%) and OpenAI's O3 (21%). This exam, created by the nonprofit AI Safety Center and the AI startup ScaleAI, contains thousands of questions across subjects such as mathematics, physics, medicine, and humanities.
Musk noted, "Grok4 is at a doctoral level or above for academic questions across all subjects," adding, "It may lack common sense at times or have not yet discovered new technologies or physics theories, but overcoming that is a matter of time."
xAI also unveiled 'Grok4 Heavy,' which features multi-agent capabilities. The Grok4 Heavy generates multiple agents simultaneously to solve problems individually and then compares them like a study group to derive the optimal answer, xAI explained. xAI plans to release an AI model specialized in coding next month, a multimodal agent in September, and a video generation model in October.
On that day, xAI announced the launch of its high-priced monthly subscription product 'SuperGrok Heavy,' costing $300 per month. The $300 service is more expensive than the $200 premium plans offered by OpenAI, Google, and Anthropic. Subscribers to SuperGrok Heavy can experience 'Grok4 Heavy' early and will have access to xAI's upcoming products.