Elon Musk’s Grok 4 AI Just Leaked, and It’s Crushing All the Competitors

According to the latest leak, it seems like the Elon Musk’s AI company, xAI, is officially skipping Grok 3.5 and heading straight to Grok 4 — a move that signals not just a version change, but a major leap in capability. With benchmark results that rival and even surpass some of the most powerful models on the market, Grok 4 is shaping up to be the most advanced release from xAI company to date.

Set to launch in early July, Grok 4 could become a major force in the current AI realm. With expected improvements in logical reasoning, math accuracy, and coding intelligence – combined with a specialized “Grok 4 Code” variant – this release signals a clear shift in xAI’s strategy toward developer-grade tools and multimodal performance.

Positioned as a direct challenger to models like GPT-4o and Gemini 2.5 Pro, Grok 4 reflects xAI’s ambition to become a serious contender in both consumer and enterprise-grade AI, ahead of major upcoming releases like GPT‑5 and Gemini 3.0.

What is Grok 4?

Grok 4 is xAI’s new flagship model designed to handle advanced reasoning, mathematical problem-solving, and natural language tasks across a wide range of domains. It’s the next generation in the Grok series, trained with expanded compute and optimized for both speed and logic. The architecture behind Grok 4 is engineered to serve general users as well as developers, with early access already being offered through API endpoints in the xAI Console.

The model will initially support text, with image input and generation features expected to follow soon. While Grok 4’s 130K token context window allows for extended conversations and in-depth document analysis, it’s notably smaller than what’s expected from upcoming competitors like GPT‑5 and Gemini 3.0, which aim to exceed million-token capacities.

This suggests that xAI is prioritizing faster inference and real-time usability over maximum memory length — a strategic move likely aimed at enhancing responsiveness in both consumer chat and embedded development workflows.

What Elon Musk Has Said About Grok 4

Elon Musk confirmed the name and timing of the release personally, stating, “Grinding on Grok all night with the xAI team. Good progress.” He also noted that Grok 4 needed “one more big run for a specialized coding model,” implying close attention to developer use cases. Musk emphasized noticeable improvements in the model’s behavior, calling Grok 4 a significant step forward in reasoning.

Looking at Musk’s broader track record and xAI’s current trajectory, it’s likely that Grok 4 is a stepping stone toward a larger ecosystem of agentic AI tools. The integration with platforms like Cursor, a coding-focused editor, hints at deeper ambitions in software development, possibly positioning Grok as the go-to long-term coding assistant.

What’s the Difference Between Grok 4 and Grok 4 Code?

Grok 4 and Grok 4 Code are built on the same foundation but optimized for different end users.

Grok 4 is the general-purpose model focused on language understanding, mathematical reasoning, and everyday conversations. It will serve as the default for most users accessing xAI tools via API or the web interface.

Grok 4 Code, on the other hand, is a developer-specific variant tailored for engineering and programming tasks. It supports real-time interaction with codebases and is expected to integrate directly with code editors like Cursor. Early documentation from xAI describes it as a “coding companion” that can read, write, and debug code with advanced reasoning capabilities.

The xAI Console hints at deep integration with IDEs, with ambitions toward “agentic coding” workflows — where the model does not just assist but also plans and executes tasks autonomously within development environments.

Grok 4 and Grok 4 Code Benchmarks

Early benchmarks indicate that Grok 4 is not just a refinement but a genuine leap forward. Here’s what the numbers say:

• AIME’25 (advanced math): 95
• GPQA (graduate-level reasoning): 87 standard, 88 reasoning
• HLE (Humanity’s Last Exam): 35 standard, 45 reasoning
• SWE-Bench (coding): 72 standard, 75 reasoning

Grok 4’s leaked benchmarks [Source]

These are substantial improvements over Grok 3 and rival scores from leading models like GPT-4o. For context, Grok 4’s HLE Reasoning score of 45% (Humanity’s Last Exam, a challenging benchmark designed to simulate advanced reasoning scenarios) is over double the previous best from Gemini 2.5 Pro, which hovered around 21%. On coding tasks, Grok 4 Code’s SWE-Bench score of 75 — which measures how well an AI can solve real-world software engineering problems — exceeds the scores of even the most capable models today.

Comparison: Grok 4 vs GPT-5, Gemini 3, GPT-4o, and Grok 3

Compared to GPT-4o, which scores around 53.6 on GPQA, Grok 4 clearly dominates in graduate-level reasoning. But while GPT-5 is expected to extend context windows to over 1M tokens (how much text the model can “remember” at once), Grok 4 is anticipated to pack a mere 130K token context window.

Gemini 3 is still in development but aims for deeper multimodal integration (text, images, possibly video) and real-time reasoning, powered by TPU v5p acceleration — Google’s latest custom hardware designed to run AI models faster and more efficiently, while Grok 4 will be rolled out likely supporting only text.

Grok 3 was already a powerful model, achieving 84.6 on GPQA and a Chatbot Arena Elo score of 1402 (a crowdsourced ranking system where AIs are rated by human voters in side-by-side comparisons). But Grok 4 appears to probably exceed it in every metric, from AIME’25 (an elite math reasoning test) to long-context understanding. The gains are especially notable given that xAI is optimizing Grok 4 for real-world speed and developer usability, not just leaderboard performance.

Grok 4 Release Date

Grok 4 and Grok 4 Code are expected to launch shortly after July 4, 2025. While public access hasn’t opened yet, developers can already see API availability through the xAI Console, where Grok 4 appears as “grok-4-0629” and “grok-4-code-0629.”

The rollout strategy appears phased, starting with developer access and eventually reaching broader public availability through xAI’s web platform and partner integrations. Users of Cursor will likely see Grok 4 Code embedded on day one.

Conclusion

Grok 4 marks the most ambitious release yet from xAI, combining advanced reasoning with developer-centric design. The model shows significant gains across core benchmarks in math, logic, and code, and is poised to challenge AI leaders like OpenAI and Google not just on paper, but in practical applications.

With a phased rollout already underway and deep integrations planned for developer environments, Grok 4 isn’t just chasing benchmarks — it’s setting new ones. The addition of Grok 4 Code further strengthens its value proposition by targeting the growing market for autonomous coding assistants.

While GPT-5 and Gemini 3 loom large on the horizon, Grok 4 has arrived with proof, not promises. And in the competitive AI space, being first to deliver breakthrough performance often matters more than being theoretically better.

For now, Grok 4 is the model to watch.