diff --git a/README.md b/README.md
index 1632ae1..8a1cdb1 100644
--- a/README.md
+++ b/README.md
@@ -7,9 +7,10 @@ R Vibe Tool is a powerful Command-Line Interface (CLI) utility designed for Linu
 ## Features
 
 - **Flexible AI Integration**: Support for multiple AI models including:
-  - OpenAI GPT-3.5-turbo (default)
+  - OpenAI GPT-3.5-turbo (default, if you did not set API key)
   - Ollama
   - Anthropic Claude
+  - Grok
 
 - **Customizable Behavior**: Configure tool behavior through `~/.rcontext.txt`
 - **Agent Support**: Intelligent context-aware assistance
@@ -55,6 +56,7 @@ export R_MODEL="grok-2"
 export R_BASE_URL="https://api.x.ai"
 export R_USE_STRICT=false
 export R_KEY="xai-gfh"
+./r
 ```
 
 ## Best Practices