In the ever-evolving world of AI, speed and quality often come at a price. But what if we could flip that equation? That’s exactly what xAI’s latest release "Grok 4 Fast" is doing, delivering frontier-level performance at a fraction of the cost.

Intelligence Meets Efficiency

Grok 4 Fast builds on the success of Grok 4 but focuses on something critical for today’s developers and enterprise users which is cost-efficiency without compromise. It slashes token usage by 40% on average while maintaining top-tier results across reasoning tasks meaning you can now run highly capable AI systems with significantly fewer resources.

Take math-heavy benchmarks like AIME or HMMT, and Grok 4 Fast scores in the 90s. On complex browsing tasks like X Browse or multilingual search benchmarks, it either matches or outperforms larger models like GPT‑5 and Claude. The secret is a dense reinforcement learning approach that trains the model to think smarter, not longer.

Fast, Fluent, and Fully Equipped for the Web

This model isn’t just smart it knows when to search and how to browse. Trained end-to-end for native tool use, Grok 4 Fast can hop through websites, analyze content (even media like images and video on X), and summarize it back to you faster than you can say “multi-hop.”

In real-time benchmarks, it consistently beat older models in multilingual search, real-world QA, and agentic browsing. Whether it's calculating XP thresholds for Path of Exile 2 or chasing the latest research, this model doesn't just respond—it investigates.

One Model. Two Minds.

Most AI systems run different models for different tasks. Not Grok 4 Fast.

This release merges “reasoning” and “non-reasoning” capabilities into one unified architecture. Simple question? You get a quick, clean answer. Deep reasoning problem? The same model digs in with chain-of-thought steps. That makes it ideal for everything from chatbots to coders to search engines all with one set of weights.

Frontier Performance, Without the Frontier Price

What really stands out is the value. According to Artificial Analysis, Grok 4 Fast delivers a 47x cheaper price-to-intelligence ratio than some of the biggest names on the market. It outperforms models with much larger compute footprints while cutting token costs by 98% in certain use cases.

Now Available to Everyone

Whether you’re building on OpenRouter, deploying with Vercel AI Gateway, or running inference via the xAI API, Grok 4 Fast is ready. And for the first time, xAI is making their best model available to all users across Grok.com, iOS, and Android apps.

Grok 4 Fast is not just another model. It’s a clear signal that advanced AI is becoming faster, cheaper, and more accessible than ever before. No exaggeration, no fanfare just real innovation where it matters performance, price, and purpose.