xAI

Austin, United StatesFounded 2023x.ai

The Grok models come from xAI, which now trades as SpaceXAI and has belonged to SpaceX since February 2026. Only Grok-1 and Grok 2 have open weights.

Flagship

Grok
4.7

Flagship

xAI's flagship for code and knowledge work, on a larger base model than Grok 4.6, with a 500K-token window and no cap on text output.

Read: Grok 4.7

Lineup

Measure

  1. Grok 4.7

    Flagship

    Total
    Undisclosed
    Active
    Undisclosed
    Context
    500k

  2. Grok Build 0.1

    Total
    Undisclosed
    Active
    Undisclosed
    Context
    256k

  3. Grok 4.3

    Total
    Undisclosed
    Active
    Undisclosed
    Context
    1M

  4. Grok 2

    Total
    Undisclosed
    Active
    Undisclosed
    Context
    131k

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