⚡ xAI Launches Grok 4.1 Fast with Massive 2 Million Token Context Window

New Model Delivers Speed, Precision, and Long-Form Conversations for Real-World Applications

xAI has unveiled Grok 4.1 Fast, its latest AI model optimized for blazing-fast inference, high accuracy, and handling exceptionally long conversations due to a record 2 million token context window.

Grok 4.1 Fast is designed to excel in practical workflows such as deep customer support research, multi-step problem-solving, and real-time data extraction, making it suitable for professional working environments.

The model operates in two modes: a reasoning mode that delivers step-by-step logical analysis for complex tasks, and a non-reasoning mode optimized for speed and straightforward query responses.

Offering multimodal support, Grok 4.1 Fast can process images along with text inputs, providing versatile response capabilities.

xAI emphasizes Grok 4.1 Fast’s cost-effectiveness alongside performance, aiming to lower barriers for AI deployment in enterprise use cases.

The massive 2 million token window allows persistent context retention across long sessions, supporting nuanced, fluid dialogues without losing track of earlier information.

Available via xAI’s web and mobile applications and accessible through API calls, Grok 4.1 Fast integrates smoothly with diverse workflows.

This release builds on prior Grok versions and addresses hallucination concerns with improved factual accuracy and continuous safety mitigations.

xAI positions Grok 4.1 Fast as a cutting-edge tool, capable of enhancing workplace productivity and handling demanding AI workloads efficiently.

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