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Grok 4.5

Parameters

Undisclosed

Context Length

500K

Modality

Multimodal

Architecture

Undisclosed

License

Proprietary

Release Date

8 Jul 2026

Knowledge Cutoff

Feb 2026

API Pricing (per 1M)

Input: $2.00 · Output: $6.00

Evaluation Benchmarks

Rank

#17

BenchmarkScoreRank

Graduate-Level QA

GPQA

0.93

7

Agent Arena

Agent Arena

0.06

12

Agentic Coding

LiveBench Agentic

0.56

17

0.87

21

0.91

21

Web Development

WebDev Arena

1556

22

0.76

23

LiveBench Average

LiveBench Average

0.76

23

high

0.72

27

Intelligence Index

Artificial Analysis
high

0.46

28

0.73

28

Agentic Index

Artificial Analysis
high

0.42

30

General Text

Text Arena

1471

35

0.69

42

Rankings

Overall Rank

#17

Coding Rank

#24

About Grok 4.5

Grok 4.5 is a frontier multimodal reasoning model from xAI offering strong performance across coding, STEM, and deep analytical tasks. It is equipped with a 500K context window and handles text, image, and file inputs.

Technical Specifications

Architecture specifications are undisclosed for proprietary models.

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 4.5: Model Specifications and Details