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xAIProprietary

Grok 4 Heavy

Grok 4 Heavy is a foundation model developed by xAI. It features a chat-specialized design and is equipped with a 128K context window.

Parameters

Undisclosed

Context Window

128K

License

Proprietary

Release Date

2025-07-10

API Pricing

API pricing for this model is not yet available

Strengths

  • ・Wide 128K context understanding
  • ・Advanced chat capabilities
  • ・Latest design by xAI

Weaknesses

  • ・Closed, non-public format
  • ・Source code not disclosed
  • ・License restrictions present

Use Cases

  • ・Building advanced conversational AI
  • ・Long document analysis
  • ・General-purpose chat applications