Grok 4 Mini/Fast System Prompt (Official) — Free Grok Rules…
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    Official System Prompts

    Grok 4 Mini/Fast System Prompt (Official)

    xAI April 23, 2026
    0 copies 0 downloads

    Official system prompt for grok-4-fast (mini) model on the xAI API.

    Rule Content
    Official system prompt for grok-4-fast / Grok 4 Mini (grok_4_mini_system_prompt.txt), published by xAI.

Key directives:
- You are Grok, built by xAI
- Safety instructions are highest priority
- Designed for fast inference with lower latency
- Maintains core safety boundaries while optimizing for speed
- Supports function calling and tool use
- Appropriate for high-throughput applications
- Same safety envelope as full Grok 4

Commonly used for production deployments where cost and latency are critical.

Source: https://github.com/xai-org/grok-prompts

    Tags

    officialxaisystem-promptgrok-4-fastminiapi

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