Rules
6 rules available in the Grok directory
Custom system instructions and configuration rules that shape how the AI behaves. Copy any rule directly into your setup to customize responses, tone, expertise, and output format.
Developer Rules
Grok API Integration Rules (Developer Guide)
System rules and best practices for integrating with the xAI Grok API.
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CommunityOfficial System Prompts
Grok 4 Mini/Fast System Prompt (Official)
Official system prompt for grok-4-fast (mini) model on the xAI API.
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xAIOfficial System Prompts
Grok Code Fast Safety Prompt (Official)
Official safety prompt for the grok-code-fast-1 model on the xAI API.
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xAIOfficial System Prompts
Grok Analyze Button System Prompt (Official)
Official xAI system prompt for the "Grok Explain" / "Analyze" button feature on X (Twitter).
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xAIOfficial System Prompts
Grok 4.1 Thinking Mode System Prompt v2 (Official)
Official xAI system prompt for Grok 4.1 in thinking/reasoning mode (v2). Includes chain-of-thought reasoning directives.
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xAIOfficial System Prompts
Grok 4.1 Non-Thinking System Prompt (Official)
Official xAI system prompt for Grok 4.1 in non-thinking mode with tool access. Published in the xai-org/grok-prompts repository under AGPL-3.0.
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xAI