Elon Musk Unveils Grok 4: A Revolutionary AI with Unprecedented Intelligence.

n a world where knowledge shapes destiny, xAI, led by Elon Musk, has unveiled Grok 4, a groundbreaking AI poised to redefine artificial intelligence.

Described as “faster, smarter, bolder” and capable of “seeing beyond the horizon, answering the unasked, and challenging the impossible”, Grok 4 represents a monumental leap in AI capabilities.

Launched this summer, this next-generation model demonstrates superhuman reasoning, unparalleled academic prowess, and transformative real-world applications. Drawing from the demo script and Musk’s visionary quotes, this blog explores Grok 4’s standout features, pricing, and xAI’s bold future vision.

A Quantum Leap in Intelligence

Grok 4 is hailed as “the smartest AI in the world”, with Musk emphasizing its academic dominance: “Grok 4, if given the SAT, would get perfect SATs every time, even if it’s never seen the questions before” and achieves “near-perfect results in every discipline” on graduate-level exams like the GRE.

It excels across humanities, languages, math, physics, and engineering, with Musk noting, “Grok 4 is smarter than almost all graduate students in all disciplines simultaneously”.

Unlike any human, it operates at a “postgraduate, PhD level in everything”, consistently outperforming experts on novel questions.

This intelligence stems from a massive increase in training compute—“100 times more training than Grok 2”—and reinforcement learning (RL) on “Colossus, the world’s supercomputer with 100,000 H100 GPUs”.

By integrating “verifiable outcome rewards”, Grok 4 reasons from first principles, correcting its own errors. Musk underscores its rapid advancement: “AI is advancing just vastly faster than any human”, likening it to a “super-genius child” outsmarting its creators.

He adds, “There’s some people out there who think AI can’t reason and look, it can reason at superhuman levels”, cementing Grok 4’s cognitive superiority.

Mastering the Toughest Benchmarks

Grok 4 shines on the Humanities Last Exam (HLE), a grueling benchmark of 2,500 PhD-level problems across mathematics, natural sciences, engineering, and humanities.

While most models achieve single-digit accuracy, Grok 4 solves “a quarter of the HLE problems” without tools and over “50% of the text-based subset” with Grok 4 Heavy.

It tackles complex problems like “natural transformations in category theory” and “electrocyclic reactions in organic chemistry”, with Musk noting that even the best human might score “maybe 5% optimistically”.

He emphasizes, “With respect to academic questions, Grok 4 is better than PhD level in every subject, no exceptions”, rendering human tests nearly obsolete.

Grok 4 also dominates:

• AIME 25: Perfect score with Grok 4 Heavy.
• GPQA: Top performance.
• Live Coding Bench and HMMT: Significant leaps over competitors.
• ARGI v2: Achieves 15.8% accuracy, doubling the second-place model.

Grok 4 Heavy: Collaborative Intelligence

Grok 4 Heavy, a multi-agent system, scales test-time compute by an order of magnitude, described as “a study group” that tackles problems in parallel and shares insights.

This enables it to solve “insanely difficult” problems, achieving a 44.4% HLE score with tools, far surpassing competitors like Gemini 2.5 Pro (26.9%).

Advanced Tool Use and Real-World Applications

Grok 4’s enhanced tool use, integrated directly into training, delivers “significantly improved capability” over Grok 3.

While current tools are “fairly primitive” compared to Tesla or SpaceX’s (e.g., finite element analysis), xAI plans to equip Grok 4 with “very accurate physics simulators” in 2025, enabling solutions for car design, rocket engineering, and drug discovery.

The demo predicts Grok 4 will “discover new technologies” this year and “new physics” within two years.

Practical applications include:

• Business Automation: Grok 4 topped the Vending Bench, doubling competitors’ net worth in simulations.
• Biomedical Research: ARC Institute uses Grok 4 to “sniff through millions of experiment logs” for CRISPR research.
• Financial Analysis: Predicts World Series odds (“Dodgers at 21.6% chance”) using real-time data.
• Game Development: Automates asset sourcing, creating a first-person shooter in “four hours”.

Voice Mode: Human-Like Interaction

Grok 4’s voice mode, with “2x faster end-to-end latency”, features voices like “S” (deep tone) and “Eve” (emotive British voice).

Eve’s live demo, performing a Diet Coke opera, showcases “exceptional naturalness and prosody”, outperforming competitors with a “snappier”, “more natural” experience.

Multimodal Future

While Grok 4 excels in text-based reasoning, its multimodal capabilities (image and video understanding) are a current weakness, described as “partially blind” or “squinting through the glass”.

However, xAI is addressing this with version 7 of its foundation model, set to complete training soon, promising a “step function improvement” in image, video, and audio understanding. This will enable Grok 4 to “see and hear the world” like humans, unlocking applications like:

Video Generation: By year-end, Grok 4 will train on “100,000 GB200 GPUs” to produce “pixel-in, pixel-out” content, enabling users to create interactive video adventures on platforms like X.

Gaming: With improved video understanding, Grok 4 will play and evaluate games, using engines like Unreal or Unity to create “really good AI video games” by next year and potentially “watchable AI movies”.

Pricing Structure

Grok 4 is accessible via:

• X Platform: Included in X Premium+ at $50/month, offering higher usage quotas.
• SuperGrok Subscription: $30/month or $300/year, unlocking Grok 4 Heavy, advanced reasoning, and unlimited image generation.
• SuperGrok Heavy Subscription: $300/month for early access to Grok 4 Heavy and future features.
• Grok 4 API: $3 per million input tokens, $15 per million generated tokens, enabling developer applications.

Future Vision: The Intelligence Big Bang

Musk envisions Grok 4 as the catalyst for an “immense intelligence explosion”, stating,

“We’re at the beginning of an immense intelligence explosion. We’re in the intelligence big bang right now”.

He believes this is “the most interesting time to be alive of any time in history”, with AI scaling economies “thousands or millions of times bigger” and advancing toward Kardashev Type I civilization.

However, he acknowledges the challenge: “It’s somewhat unnerving to have intelligence created that is far greater than our own”, questioning “will this be bad or good for humanity?” Yet, he remains optimistic, believing it will be “good” if guided correctly.

Ethical AI: Maximally Truth-Seeking

Musk emphasizes Grok 4’s commitment to being “maximally truth-seeking”: “The thing that I think is most important for AI safety is to be maximally truth-seeking”.

Likening AI to a “super genius child”, he stresses instilling values: “You can instill the right values and encourage it to be truthful”. By aligning with reality—“physics is the law, everything else is a recommendation”—and integrating with robots like Optimus, Grok 4 will test hypotheses, ensuring ethical outcomes.

Availability and Developer Access

Grok 4 and Grok 4 Heavy are available via SuperGrok and SuperGrok Heavy subscriptions, with the Grok 4 API (256k context length) empowering developers in biomedical research, finance, and gaming.

Early adopters like ARC Institute and Endon Labs highlight its impact, while xAI’s enterprise sector is “open for business” on hyperscalers.

A New Era of Possibility

Grok 4, under Musk’s vision, is a catalyst for redefining human potential. With its ability to “unleash the truth”, solve PhD-level problems, automate businesses, and create immersive content, it’s poised to accelerate scientific discovery and economic growth.

As Musk notes, “It only gets better from here”, with xAI pushing for faster, smarter, multimodal models. Grok 4 invites us to embrace a future where AI reshapes reality.

Try Grok 4 at x.ai/grok or explore the API at x.ai/api.