Grok‑4 by xAI: A Smarter AI Chatbot, Now Partially Free

xAI, the AI company founded by Elon Musk, has released Grok‑4, its latest and most advanced chatbot. While earlier versions were limited to paid users, Grok‑4 is now available to everyone — in a limited form.

If you’re curious, you can try a free version directly through X (formerly Twitter). However, to unlock the full power of Grok‑4 — especially its research tools and long-context capabilities — you’ll need a Premium+ subscription. There’s also an even more powerful tier, Grok‑4 Heavy, available for business users at a higher cost.

What’s New in Grok‑4?

Grok‑4 is a major upgrade over its predecessor, Grok‑3. It uses a new architecture developed in-house by xAI and is fully integrated with X (formerly Twitter). The model is designed not only to provide thoughtful answers but also to be humorous, rebellious, and deeply connected to real-time events via the X platform.

Some standout features include:

Real-Time Knowledge Integration – Grok‑4 pulls in fresh data from X posts, giving it a more current and dynamic edge.
Improved “Think” Mode – Just like Grok‑3, it still shows its reasoning step-by-step, but now with greater speed and clarity.
Enhanced DeepSearch – The research tool now covers broader sources and goes deeper, making it one of the most powerful free research AIs available.
Bigger Context Window – Grok‑4 can now process and recall longer conversations and documents.

How It Compares to Other AI Models

Compared to tools from OpenAI, Google, and Anthropic, Grok‑4 is faster, more open, and offers transparent reasoning in real time. It doesn’t just give answers — it explains how it got them. While it may still have a few quirks, Grok‑4 is positioned as a serious contender in the AI space, especially for users who value direct, intelligent, and occasionally witty responses.

Try It While It’s Free — But Know the Limits

xAI has made a limited version of Grok‑4 free for everyone via X, but the full experience requires a paid subscription:

Free access: Limited features and usage available to all users on X.
Premium+ subscription: Full access to Grok‑4 capabilities.
SuperGrok Heavy: Premium, multi-model version costing around $300/month, targeted at business and power users.