Grok 3

Version: 1

xAI•Last updated October 2025

Grok 3 is xAI's debut model, pretrained by Colossus at supermassive scale to excel in specialized domains like finance, healthcare, and the law.

Understanding

Instruction

Summarization

Azure Direct Models

Direct from Azure models are a select portfolio curated for their market-differentiated capabilities:

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Future-ready flexibility: Access the latest models as they become available, and easily test, deploy, or switch between them within Azure AI Foundry; reducing integration effort.
Cost control and optimization: Scale on demand with pay-as-you-go flexibility or reserve PTUs for predictable performance and savings.

Learn more about Direct from Azure models .

Key capabilities

About this model

Grok 3 blends unparalleled intelligence with vast pretraining knowledge, honed on xAI's Colossus supercluster. The model comes equipped with enterprise features, such as:

Deep domain expertise: a strong world-knowledge in finance, healthcare, and the law.
Instruction-following: follows chain of command and is less likely to refuse queries.
Document reasoning: can process extensive and complicated professional documents.

Grok 3 is purpose-built to be the workhorse model for the enterprise, providing a strong foundation for business workflows in any professional field.

Key model capabilities

Deep domain expertise: With deep domain expertise in finance, healthcare, law and science, Grok 3 excels at enterprise tasks like financial forecasting, medical diagnosis support, legal document analysis, and scientific research assistance—delivering precise, domain-specific solutions.
Extended Context Length: With an extended context length of up to 16k tokens (131K coming soon), Grok 3 processes and understands vast datasets in a single pass—ideal for comprehensive analysis of large documents or complex workflows.
Steerability & Chain of Command: Grok 3 is extremely steerable and follows instructions closely. The model is less likely to refuse queries, providing more helpful responses while maintaining safety and ethical standards.
Structured outputs: Grok 3 supports structured outputs, enabling developers to specify JSON schemas for AI-powered automations.
Functions and Tools support: Like other xAI models, Grok 3 model supports functions and external tools that enable enterprises to build agentic workflows.

Use cases

See Responsible AI for additional considerations for responsible use.

Key use cases

Grok 3 is purpose-built for common business use cases like data extraction, coding, and text summarization. Grok 3 excels at enterprise tasks like financial forecasting, medical diagnosis support, legal document analysis, and scientific research assistance—delivering precise, domain-specific solutions.