diff --git a/.env.example b/.env.example
index 4da6711..e1722cc 100644
--- a/.env.example
+++ b/.env.example
@@ -3,11 +3,16 @@
 # API Keys (set at least one for chat model)
 OPENAI_API_KEY=
 ANTHROPIC_API_KEY=
+GEMINI_API_KEY=
+
+# For web search functionality (optional)
 TAVILY_API_KEY=
 
 # Chat Model (any LiteLLM-supported model)
 # OpenAI: gpt-5, gpt-4.1, gpt-4.1-mini
 # Anthropic: claude-sonnet-4-20250514, claude-opus-4-20250514
+# Google: gemini models require gemini/ prefix (e.g., gemini/gemini-2.5-flash)
+# Other providers: azure/, bedrock/, groq/, ollama/, together_ai/ (see litellm docs)
 PENTESTAGENT_MODEL=gpt-5
 
 # Embeddings (for RAG knowledge base)