Grok 4: The most powerful open-source AI model yet
Elon Musk’s xAI just released Grok 4, and it’s getting attention for all the right reasons.
This isn’t just another large language model. It’s one of the most powerful open-source models we've ever seen. Grok 4 is smart, fast, and flexible. It understands text, sees images, writes code, solves math, and holds long conversations without skipping a beat.
And the best part? It’s completely open.
What makes Grok 4 special?
Grok 4 is built on a new system called Fusion, which uses a Mixture-of-Experts (MoE) architecture. That means it doesn’t activate its entire brain for every task. Instead, it selectively uses just the parts that are most relevant. This makes it more efficient and scalable than traditional models.
It has:
- 314 billion parameters (but only 25% are used at a time)
- Multimodal capability (trained on both text and images)
- A huge context window of 128,000 tokens (great for long documents or complex code)
And it’s open-source. No locked APIs or hidden pricing.
So how powerful is it?
On the MMLU benchmark, which tests general knowledge and reasoning, Grok 4 scored 83.8%. That’s just behind GPT-4 at 86.4% and Claude 3.5 at 88.7%.
In math reasoning, Grok 4 actually outperformed GPT-4, scoring 93.7% on GSM8K compared to GPT-4’s 92.0%. And for coding, it scored 82.7% on HumanEval, placing it above GPT-4’s 81.0%, though a bit behind Claude 3.5’s 88.9%.
In short, Grok 4 is right up there with the best.
Rysysth insights
At Rysysth, we see Grok 4 as a major step forward in making powerful AI tools more open and usable.
Its design gives us new ways to think about how AI can be fine-tuned for real-world needs. For example, enterprises could tailor different parts of the model to handle legal, customer service, or data analysis workflows without massive infrastructure costs.
What’s next?
Elon Musk says Grok 5 is coming within a quarter. If it builds on what Grok 4 has already achieved, we may be looking at one of the most important open AI releases yet.
Until next time.