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xAI

The Grok family

xAI's Grok models, which launched touting real-time knowledge from the X platform.

Only versions we have a record for. Missing ones appear as records are added.

11versions2023–2026Latest · Grok 4.6

At a glance

The Grok family — 11 versionsEach Grok version from 2023 to 2026 as a dot, in release order. The list below has the same information.Main lineGrok · Nov 3, 2023Grok-1.5 · Mar 28, 2024Grok-1.5V · Apr 12, 2024Grok-2 / Grok-2 mini · Aug 13, 2024Grok 3 / Grok 3 mini · Feb 19, 2025Grok 4 / Grok 4 Heavy · Jul 9, 2025grok-code-fast-1 · Aug 28, 2025Grok 4 Fast · Sep 19, 2025Grok 4.1 · Nov 17, 2025Grok 4.5 · Jul 16, 2026Grok 4.6 · Aug 12, 2026
Where labels would overlap, only the dot is drawn — point at it to see the name; every version is in the list below.

11 versions

In release order. Each date comes from the record that documents it — open a name to see the record.

  1. Grok

    xAI's first product; the main model was Grok-1

    Text

  2. Grok-1.5

    Context expanded to 128,000 tokens

    Text

  3. Grok-1.5V

    Preview of xAI's first multimodal model, with RealWorldQA

    Multimodal

  4. Grok-2 / Grok-2 mini

    Beta release; image generation via an outside model

    Text

  5. Grok 3 / Grok 3 mini

    Think-button reasoning mode and first agent, DeepSearch

    Reasoning

  6. Grok 4 / Grok 4 Heavy

    Scaled up RL compute toward pretraining levels

    Reasoning

  7. grok-code-fast-1

    Low-cost model built for agentic coding

    Code

  8. Grok 4 Fast

    Reasoning and non-reasoning modes in one set of weights

    Reasoning

  9. Grok 4.1

    Update that targeted emotional and creative chat

    Text

  10. Grok 4.5

    Trained jointly with the coding company Cursor

    Reasoning

  11. Grok 4.6

    Update focused on long-running agents

    LatestReasoning