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Grok

xAI

Elon Musk's AI lab, real-time knowledge and reasoning

xAI was founded in 2023 by Elon Musk with the mission to understand the universe. The Grok model family is deeply integrated with X (formerly Twitter), giving it unique access to real-time information. Grok 3 is xAI's frontier model, competing directly with GPT-5 and Claude on frontier benchmarks, with a particular strength in mathematical reasoning.

Founded 2023·5 models·Visit xAI

5 Models

Grok 4.6

xAI's current flagship

3 cr
Grok 4.6 is SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.
500k ctxVisionTool use

Grok 4.5

Previous Grok flagship

3 cr
Grok 4.5 is a model from SpaceXAI with frontier performance on coding, knowledge work, and STEM.
500k ctxVisionTool use

Grok 4.3

Million-token Grok

3 cr
Grok 4.3 is a reasoning model from SpaceXAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual...
1M ctxVisionTool use

Grok 3

xAI's frontier model with real-time knowledge

5 cr
Grok 3 is xAI's most powerful model, trained on a massive cluster of NVIDIA H100 GPUs. It offers real-time web access, competitive benchmark scores across STEM subjects, and a distinct personality that makes it a favourite for both technical and creative tasks.
131k ctxVisionTool use

Grok 3 Mini

Fast, efficient reasoning from xAI

2 cr
Grok 3 Mini is xAI's efficient reasoning model, using chain-of-thought to excel at logic, mathematics, and coding tasks while being significantly faster and more affordable than the full Grok 3.
131k ctxTool useJSON mode

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