Microsoft has partnered with xAI to bring Grok 4, the most advanced Grok model to date, into Azure AI Foundry. This collaboration gives developers and enterprises access to cutting-edge reasoning capabilities within a secure, production-ready environment.

What’s New in Grok 4

• First-Principles Reasoning (“Think Mode”)

  Grok 4 doesn’t just generate answers—it reasons step by step, making it especially powerful for research, tutoring, and troubleshooting complex problems.

• 128K-Token Context Window

  Developers can load entire code repositories, lengthy research papers, or multi-chapter documents in one shot, without losing details or chopping content into fragments.

• Real-Time Insights

  With integrated web search and external data connections, Grok 4 acts as an autonomous research assistant, capable of pulling in live, relevant information to enrich responses.

Family of Grok Models in Azure AI Foundry

In addition to Grok 4, three specialized versions are available:

• Grok 4 Fast Reasoning – optimized for logical inference and decision-making.

• Grok 4 Fast Non-Reasoning – lightweight and fast for summarization or classification.

• Grok Code Fast 1 – built for code generation and debugging across multiple languages.

Pricing (with Azure AI Content Safety included)

• Input: $5.50 / 1M tokens

• Output: $27.50 / 1M tokens

Grok 4 is more than another LLM drop. Its reasoning-first architecture, expanded context window, and real-time data awareness make it a strong fit for enterprise-grade use cases—ranging from code analysis to academic research to business intelligence. With Azure AI Content Safety enabled by default, organizations get an added layer of protection out of the box.

Get Started

Developers can explore Grok 4 today in Azure AI Foundry. Search for “Grok” and test out the full suite of models.