xAI

Headquarters: San Francisco, CA & Memphis, TN, USAFounded: 2023Official Website →

Creator of Grok 4, Grok 4.6, and Grok 3 powered by the Colossus supercluster.

Models by xAI (14)

xAI
Cloud API

Grok 4

Params
Multi-Trillion MoE
Context
1.0M
Speed
—
Release
Jun 2026
Pricing / 1M:$5.00/$20.00
View Specs
xAI
Cloud API

Grok 3

Params
Colossus-Trained Frontier MoE
Context
1.0M
Speed
—
Release
Feb 2025
Pricing / 1M:$3.00/$15.00
View Specs
xAI
Cloud API

Grok 4.6

Params
Multi-Trillion MoE
Context
500k
Speed
—
Release
Aug 2026
Pricing / 1M:$2.00/$6.00
View Specs
xAI
Cloud API

Grok 3 Mini

Params
Undisclosed Compact MoE
Context
131k
Speed
—
Release
Feb 2025
Pricing / 1M:$0.30/$1.20
View Specs
xAI
Cloud API

Grok 4.5

Params
Undisclosed
Context
128k
Speed
—
Release
Jun 2026
Pricing / 1M:$3.00/$15.00
View Specs