Grok 4 1 Fast Reasoning

Grok 4 1 Fast Reasoning is a text model from xAI with a context window of 2.0M tokens and max output of 2.0M tokens. Pricing starts at 0.20 per million input tokens and 0.50 per million output tokens (cheapest at Azure AI).

Price Comparison by Provider

Compare prices for Grok 4 1 Fast Reasoning across different providers. The same model may be available through multiple providers at different price points.

• Chart
• Table

Provider	Model Key	Input Price, $	Output Price, $
xAI	xai/grok-4-1-fast	0.200	0.500
Perplexity	perplexity/xai/grok-4-1-fast-non-reasoning	N/A	N/A
Azure AI	azure_ai/grok-4-1-fast-non-reasoning	0.200	0.500

All Variants

All available versions, regions, and API endpoints for Grok 4 1 Fast Reasoning.

Model Key	Provider	Mode	Input Price, $	Output Price, $	Context	Max Output	Vision	Functions
azure_ai/grok-4-1-fast-non-reasoning	Azure AI	Text	0.200	0.500	131K	131K	no	yes
azure_ai/grok-4-1-fast-reasoning	Azure AI	Text	0.200	0.500	131K	131K	no	yes
perplexity/xai/grok-4-1-fast-non-reasoning	Perplexity	Other	N/A	N/A	N/A	N/A	no	yes
xai/grok-4-1-fast	xAI	Text	0.200	0.500	2.0M	2.0M	yes	yes
xai/grok-4-1-fast-non-reasoning	xAI	Text	0.200	0.500	2.0M	2.0M	yes	yes
xai/grok-4-1-fast-non-reasoning-latest	xAI	Text	0.200	0.500	2.0M	2.0M	yes	yes
xai/grok-4-1-fast-reasoning	xAI	Text	0.200	0.500	2.0M	2.0M	yes	yes
xai/grok-4-1-fast-reasoning-latest	xAI	Text	0.200	0.500	2.0M	2.0M	yes	yes