Grok 4.1
Parameters
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Context Length
2,000K
Modality
Multimodal
Architecture
Dense
License
Proprietary
Release Date
17 Nov 2025
Knowledge Cutoff
-
Technical Specifications
Attention Structure
Multi-Head Attention
Hidden Dimension Size
-
Number of Layers
-
Attention Heads
-
Key-Value Heads
-
Activation Function
-
Normalization
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Position Embedding
Absolute Position Embedding
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.
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
Evaluation Benchmarks
No evaluation benchmarks for Grok 4.1 available.
Rankings
Overall Rank
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Coding Rank
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