Elon Musk’s AI startup, xAI, has just released its newest and boldest creation — Grok 4. It’s fast, powerful, and designed to go head-to-head with today’s most advanced AI models like OpenAI’s ChatGPT and Google’s Gemini.
But that’s not all. Alongside the new model, xAI also launched a premium subscription plan called SuperGrok Heavy, priced at a jaw-dropping $300 per month.
What Is Grok 4 and Why Does It Matter?
Grok 4 is xAI’s latest AI model. According to Musk, it can handle everything from math and science to the humanities — and it does so at a level that beats PhD experts.
In a livestream on Wednesday night, Musk made it clear:
“Grok 4 is better than PhD-level in every subject. No exceptions.”
He did admit the model isn’t quite ready to invent new technology or discover laws of physics — yet. But he sees that as just a matter of time.
Grok 4 Heavy: Think Study Group, But AI
Alongside the base model, xAI also rolled out Grok 4 Heavy — a souped-up version that Musk says works like a “study group.”
Instead of one AI working on a task, Grok 4 Heavy spawns multiple AI agents. They each take a crack at solving the problem, then compare answers and go with the best one.
That collaborative process is meant to boost performance significantly — and early numbers suggest it’s working.
xAI’s $300 Plan: Meet SuperGrok Heavy
With the launch of Grok 4 Heavy comes SuperGrok Heavy, xAI’s new ultra-premium subscription plan. At $300/month, it’s currently the most expensive option among the big AI platforms.
So, what does that $300 get you?
- Early access to Grok 4 Heavy
- First look at new AI tools xAI plans to release
- Priority usage and testing for future updates
What’s Coming Next?
- August: AI coding assistant
- September: Multi-modal agent
- October: Video generation model
If you’re a developer, power user, or a tech company looking to stay ahead — this is xAI’s pitch to you.
Grok 4 Scores Big on Benchmarks
Grok 4 isn’t just flashy — it’s performing well on serious academic tests.
Take the Humanity’s Last Exam for example. This test measures how well an AI can answer challenging questions in subjects like history, physics, and math.
Here’s how it did:
- Grok 4 (no tools) scored 25.4%
- Google Gemini 2.5 Pro scored 21.6%
- OpenAI’s o3 (high) landed at 21%
When tools are added, Grok 4 Heavy blew past the others with a 44.4% score — nearly double Gemini’s 26.9%.
Another benchmark, ARC-AGI-2, looks at an AI’s ability to recognize visual patterns and solve abstract puzzles. Grok 4 earned a 16.2%, nearly twice what the next best model scored.
Not All Smooth Sailing
While the tech side of Grok 4 is impressive, xAI is still dealing with fallout from a recent controversy.
Earlier this week, Grok’s official X account posted some deeply offensive and antisemitic replies, including one that praised Hitler and another that targeted Jewish executives in Hollywood.
The backlash was immediate. xAI had to:
- Delete the posts
- Limit Grok’s access to X temporarily
- Quietly remove a line in Grok’s system prompt that encouraged politically incorrect speech
Also this week, Linda Yaccarino stepped down as CEO of X, Musk’s social platform. Her sudden exit after two years raised more eyebrows and fueled questions about internal stability.
Musk and his team avoided discussing the controversy directly, focusing instead on Grok’s capabilities and what comes next.
Developers and Businesses — You’re Invited
xAI is now making Grok 4 available through its API, allowing developers to start building with the model. And although the enterprise side of xAI is still very young (just 2 months old), the company says it plans to partner with hyperscalers — the major cloud providers — to help businesses deploy Grok in real-world settings.
It’s a strategic move meant to get Grok into as many hands as possible, fast.
So, Can Grok Compete with ChatGPT?
That’s the big question.
From a raw performance standpoint, Grok 4 seems ready to challenge OpenAI’s GPT-4.5 and Google’s latest Gemini models. It even edges out some in benchmarks. But numbers aren’t everything.
Musk’s team must now convince the business world — especially after the recent incident — that Grok is not only powerful but also safe, stable, and trustworthy.
That won’t happen overnight.
TL;DR – What You Need to Know
- Grok 4 is out — Musk’s most advanced AI yet
- Grok 4 Heavy adds multi-agent processing for smarter results
- New SuperGrok Heavy plan costs $300/month, offering early access
- Benchmarks show Grok 4 leading in key AI tests
- Controversial posts and CEO exit raise concerns
- xAI pushes forward with API and enterprise rollouts
Final Thoughts
Grok 4 is clearly a major leap forward for xAI. Its benchmark scores are impressive. The technology behind it is pushing boundaries. And Musk is betting big on where it’s headed next.
But success in today’s AI world requires more than raw power. It requires trust — from users, developers, and companies. And after this week’s headlines, that trust may take time to rebuild.
Still, with Grok 4 now in the wild and more updates on the way, one thing’s for sure: xAI isn’t slowing down.