Grok 4.3
Parameters
Undisclosed
Context Length
1M
Modality
Multimodal
Architecture
Undisclosed
License
Proprietary
Release Date
30 Apr 2026
Knowledge Cutoff
Dec 2025
API Pricing (per 1M)
Input: $1.25 · Output: $2.50
Evaluation Benchmarks
Rank
#76
| Benchmark | Score | Rank |
|---|---|---|
Mathematics | 0.84 | 42 |
Coding | 0.70 | 45 |
Data Analysis | 0.56 | 45 |
Reasoning | 0.71 | 46 |
LiveBench Average | 0.62 | 47 |
General | 0.62 | 48 |
Agentic Coding | 0.19 | 48 |
Agent Arena | high -11.57 Standard -20.26 | 49 53 |
General Text | 1443 | 67 |
Web Development | 1357 | 84 |
Agentic Index | high 0.17 Standard 0.16 | 90 93 |
Intelligence Index | high 0.25 medium 0.25 low 0.24 Standard 0.14 | 98 100 105 162 |
Coding Index | high 0.42 Standard 0.35 | 108 119 |
Rankings
Overall Rank
#76
Coding Rank
#106
About Grok 4.3
Released April 30, 2026 by xAI, Grok 4.3 is a powerful reasoning architecture featuring a 1M token context window and massive gains on instruction-following (81.3%) and scientific computing benchmarks. Optimized for complex multi-step programmatic investigations.
Technical Specifications
Architecture specifications are undisclosed 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.