Elon Musk’s AI company, xAI, late on Wednesday released its latest flagship AI model, Grok 4, and unveiled a new $300-per-month AI subscription plan, SuperGrok Heavy.
Grok is xAI’s answer to models like OpenAI’s ChatGPT and Google’s Gemini, and can analyze images and respond to questions. In recent months, Grok has become more deeply integrated into Musk’s social network, X, which was recently acquired by xAI. However, that has also put Grok’s misbehavior front and center for millions of users.
Introducing Grok 4, the world's most powerful AI model. Watch the livestream now: https://t.co/59iDX5s2ck — xAI (@xai) July 10, 2025
The expectations are high for Grok 4. The latest AI model from xAI will be stacked up against OpenAI’s forthcoming AI model, GPT-5, which is expected to launch later this summer.
“With respect to academic questions, Grok 4 is better than PhD level in every subject, no exceptions,” said Elon Musk during a livestream Wednesday night. “At times, it may lack common sense, and it has not yet invented new technologies or discovered new physics, but that is just a matter of time.”
Musk wore a leather jacket and sat besides xAI leaders to launch Grok 4 (Credit: xAI)
The launch of Grok 4 comes amid a tumultuous week for Elon Musk’s companies. Earlier on Wednesday, Linda Yaccarino stepped down from her role as the CEO of X after roughly two years with the company. X has yet to announce her successor.
Yaccarino’s departure comes just days after Grok’s official, automated X account responded to users with antisemitic comments criticizing Hollywood’s “Jewish executives” and praising Hitler. xAI had to briefly limit Grok’s account and delete the offensive posts. In response to the incident, xAI appeared to have removed a recently added section from Grok’s public system prompt, a list of instructions for the AI chatbot to follow, that told it not to shy away from making “politically incorrect” claims.
Musk and xAI’s leaders largely avoided discussing the incident, instead focusing on Grok 4’s performance and capabilities.
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