xAI models

xAI, which now brands itself SpaceXAI on its website and in its documentation, develops the Grok models used in the Grok apps and on X. Its API flagship is Grok 4.7, with Grok 4.3 as a lower-cost 1M-context model and Grok Build 0.1 for agentic coding. Developers use the xAI API directly, and some Grok models are also available through OpenRouter and major cloud platforms.

4 models trackedData checked October 10, 2026

Lineup

Model	Status	Weights	Tier	Context	Input / 1M	Output / 1M	Released
Grok 4.7Grok 4	Current	Closed	Frontier	500K	$2	$6	Sep 21, 2026
Grok 4.3Grok 4	Current	Closed	Efficient	1M	$1.25	$2.50	Apr 2026
Grok Build 0.1Grok Build	Preview	Closed	Efficient	250K	$1	$2	May 2026
Grok 4.6Grok 4	Legacy	Closed	Frontier	500K	$2	$6	Aug 12, 2026

The lowest-priced current model is Grok Build 0.1 at $1 input and $2 output per million tokens. The most capable tier in the lineup is frontier, led by Grok 4.7. The longest context window is 1M tokens (Grok 4.3).

Frequently asked questions

What models does xAI offer?

As of October 10, 2026, we track 4 xAI models: Grok 4.7, Grok 4.3, Grok Build 0.1, Grok 4.6. Status, prices and context windows for each are in the table on this page.

How do I access xAI models?

Through xAI's developer platform (docs.x.ai), in the Grok app, and for many models through cloud marketplaces and inference providers listed on each model page.

Does xAI release open-weight models?

Older models only (Grok-1 and Grok-2 on Hugging Face); current Grok 4.x models are closed

Other providers

OpenAI Anthropic Google Amazon (AWS)Meta Perplexity Mistral AI DeepSeek Alibaba (Qwen)Microsoft (Phi)NVIDIA Moonshot AI Z.ai (Zhipu AI)MiniMax IBM Ai2 (Allen Institute for AI)

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