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Vault › Wiki › concepts › grok-v9-medium

Grok V9-Medium

Overview

A 1.5 trillion parameter coding-focused model from xai-org. Trained on Cursor data (real-world developer workflows). Finished training confirmed by Elon Musk (late May/early June 2026). Expected public release mid-June 2026.

⚠️ Important: This is a coding model, NOT Grok 5. Headlines often confuse them.

Specs

  • Parameters: 1.5 trillion
  • Training data: Cursor (real dev workflows)
  • Purpose: Code generation and assistance
  • Parent family: Grok (internal version V9)

Relationship to Grok 5

  • Grok V9-Medium is one of 7 models training on Colossus 2 (alongside 6T and 10T variants)[xai-10t-model-nextbigfuture.md]
  • Internal foundation-model version numbers (V9) do not map directly to consumer "Grok 4.x" or "Grok 5" names
  • xAI is training multiple specialized models in parallel – not a single monolithic flagship

See Also