Grok 3

Grok 3

The world’s smartest AI (according to Elon)

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Grok 3

Launch date
Grok Voice Agent API
Grok Voice Agent API Bringing the power of Grok Voice to all developers

Launched on December 18th, 2025

Grok 4.1
Grok 4.1 A new standard in conversational AI

Launched on November 18th, 2025

Grok 4 Fast
Grok 4 Fast Pushing the frontier of cost-efficient intelligence

Launched on September 21st, 2025

Grok 4
Grok 4 World's most powerful Al model (still, according to Elon)

Launched on July 10th, 2025

Grok 3
Grok 3 "The world’s smartest AI" — Elon Musk

Launched on February 19th, 2025