Elon Musk’s xAI Unveils Grok 4: A Smarter, Stronger AI Model With Premium Features
In a major announcement for the world of artificial intelligence, Elon Musk’s AI company, xAI, has officially released the Grok 4 AI model, its most advanced large language model (LLM) to date. The model was introduced during a live stream on X (formerly Twitter), where Musk and xAI developers highlighted Grok 4’s vastly improved capabilities, impressive academic performance, and its new multi-agent system dubbed Grok Heavy.
Adding to the buzz, the company also revealed the most expensive AI subscription plan ever, named SuperGrok Heavy, priced at a premium $300 per month.
🔍 What Is Grok 4? Next-Gen AI With PhD-Level Intelligence
Grok 4 is the latest upgrade in xAI’s AI model lineup. Designed to rival or outperform leading models such as OpenAI’s GPT-4 and Google Gemini 2.5, Grok 4 is said to demonstrate exceptional reasoning, comprehension, and academic knowledge.
🚀 Performance Benchmarks That Speak Volumes
During the stream, Musk and the xAI team claimed that Grok 4:
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Scored 25.4% on Humanity’s Last Exam – a complex, 2,500-question benchmark created to test AI knowledge across multiple domains.
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Outperformed OpenAI’s o3-high (21%) and Google’s Gemini 2.5 Pro (21.6%) on this test.
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Exhibits academic capabilities above PhD-level across all subjects.
These stats place Grok 4 among the top-performing AI models globally.
🤖 Introducing Grok Heavy: The Multi-Agent Intelligence System
Alongside Grok 4, xAI also unveiled Grok Heavy, a multi-agent AI system designed for collaboration and enhanced problem-solving. Unlike a single AI model operating alone, Grok Heavy works by deploying multiple specialized agents that each approach a problem from different angles.
🧠 How Does It Work?
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Each agent proposes a potential solution.
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The system analyzes, compares, and selects the most effective answer.
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Musk claimed Grok Heavy with tool use scored an astonishing 44.4% on Humanity’s Last Exam — significantly outperforming even OpenAI’s advanced models with tools.
While technical details remain limited, this approach is believed to be inspired by ensemble models and agent collaboration algorithms similar to those developed by Sakana AI.
💸 SuperGrok Heavy: World’s Most Expensive AI Subscription
To complement the high-performance capabilities of Grok 4 and Grok Heavy, xAI launched SuperGrok Heavy, a $300/month subscription plan tailored for power users, researchers, and professionals.
🧾 What’s Included:
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Early access to advanced tools like Grok Heavy
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Higher rate limits for extended usage
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Premium priority access to new experimental features
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Enhanced support for developers and enterprise use cases
This bold pricing move marks a new era in AI monetization, where premium subscriptions offer cutting-edge capabilities for elite users.
🎤 Highlights From the xAI Live Stream on X
The 48-minute stream featured:
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Elon Musk introducing Grok 4 and Grok Heavy personally
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A deep dive into academic performance and reasoning skills
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Comparisons with OpenAI, Google Gemini, and other frontier models
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A sneak peek into how multi-agent systems are reshaping the future of AI
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Announcement of the $300 SuperGrok Heavy plan and its intended audience
🆚 Grok 4 vs OpenAI and Google Gemini: How It Stacks Up
| Feature | Grok 4 | OpenAI o3-high | Gemini 2.5 Pro |
|---|---|---|---|
| Humanity’s Last Exam Score | 25.4% | 21% | 21.6% |
| Multi-Agent Score (Grok Heavy) | 44.4% | 26% | 26.9% |
| Subscription Plan | $300/month | $20-$30/month | N/A |
| Tool Use & Agent System | Yes (Grok Heavy) | Yes (limited) | Yes |
| Release Platform | xAI / X platform | ChatGPT | Gemini web/mobile |
With Grok 4 and Grok Heavy, xAI is clearly positioning itself as a major player in the AI landscape. The emphasis on reasoning, real-world benchmarks, and collaborative intelligence shows that xAI is focused on building more than just a chatbot — it’s aiming for a platform capable of AGI (Artificial General Intelligence) in the near future.
This advancement also suggests a tighter integration of AI with Elon Musk’s other ventures, possibly including Tesla, X (formerly Twitter), and Neuralink, in the future.
Grok 4 Redefines Premium AI
Elon Musk’s xAI has officially taken a bold leap forward with the release of Grok 4 and Grok Heavy. With improved intelligence, multi-agent collaboration, and an ultra-premium subscription model, xAI is pushing boundaries in the race toward AGI.
Whether you’re an AI researcher, entrepreneur, or tech enthusiast, Grok 4 is a model to watch — especially as it begins shaping the future of how we interact with intelligent systems.
