| countTokens | Count Tokens for Gemini Content (Including Images) | 
| gemini | Generate text from text with Gemini | 
| gemini.vertex | Generate text from text with Gemini Vertex API | 
| gemini_audio | Analyze audio using Gemini | 
| gemini_audio.vertex | Analyze Audio using Gemini Vertex API | 
| gemini_chat | Multi-turn conversations (chat) | 
| gemini_docs | Summarize or analyze one or more local documents using Gemini API | 
| gemini_docs.vertex | Summarize or analyze documents using Vertex AI Gemini | 
| gemini_image | Generate text from text and image with Gemini | 
| gemini_image.vertex | Generate text from text and image with Gemini Vertex API | 
| gemini_narrative | Generate narrative description for an input using Gemini | 
| gemini_search | Generate text with real-time information using Google Search (Grounding) | 
| gemini_searchR | Generate text with real-time information using Gemini (Retrieval) | 
| gemini_structured | Generate structured response from Gemini | 
| gen_docs | Generate Roxygen Documentation | 
| gen_image | Generate and save image using Gemini | 
| gen_tests | Generate Unit Tests for R Functions | 
| setAPI | Set Gemini API Key | 
| setEnv | Store API key in local environment file | 
| token.vertex | Generate Gemini Access Token and Endpoint URL |