Grok 3 mini Reasoning

FrontierClosed weightsTextReasoning

Grok family model by SpaceXAI.

About the Grok family

The Grok family (Grok 1 through 4.5, including Fast, mini, Code Fast, and dated 4.20 builds) from Elon Musk's xAI lineage — reasoning-strong flagships with live X/Twitter data access and a deliberately irreverent style. Grok 4 topped several reasoning benchmarks at launch; 4.x Fast tiers trade depth for speed.

All Grok models

How this one is configured

This configuration runs in reasoning mode (thinks step-by-step before answering).

Also runs at: high effort

Effort controls how long the model thinks before answering — higher effort usually means better answers on hard problems, at the cost of speed and money. Same model underneath, so they share this page.

Who makes it

SpaceXAIUnited StatesListed name for the Grok model developer (xAI lineage).