Grok 4.1

About Grok 4.1

Grok 4.1 brings significant improvements to real-world usability with exceptional creative, emotional, and collaborative capabilities. Optimized for style, personality, helpfulness, and alignment using frontier agentic reasoning models as reward models. Achieves #1 on LMArena Text Leaderboard with 1483 Elo (thinking mode) and #2 with 1465 Elo (non-thinking), surpassing all other models. Features 2M context window, reduced hallucination rate (12.09% → 4.22% on production queries), and state-of-the-art emotional intelligence (1586 Elo on EQ-Bench). Available in both reasoning and fast non-reasoning modes through API.

Technical Specifications

Detailed architecture specifications are limited for proprietary models.

Resources

About Grok 4

xAI's frontier intelligence models trained with reinforcement learning at unprecedented scale using the 200,000 GPU Colossus cluster. Grok 4 series demonstrates state-of-the-art performance in reasoning, coding, and multimodal understanding with native tool use capabilities. Features real-time search integration across X and the web, advanced reasoning through scaled RL training, and industry-leading performance on academic benchmarks. Designed for both immediate responses and extended thinking modes with vision capabilities.

Other Grok 4 Models

• Grok 4
• Grok 4.6
• Grok 4.3