Ruby LLM merges the APIs of GPT, Claude, and Ollama into a single, lightweight Ruby interface. Developers install just three gems—Faraday, Zeitwerk, and Marcel—and can launch a chatbot or RAG system in minutes, sidestepping the fragmented client libraries that each provider ships.

The framework supports a broad set of modalities: text chat, image and video analysis, audio transcription, document extraction, and image generation. It also offers tool integration, allowing AI to call Ruby methods for tasks like weather lookups or structured data extraction through JSON schemas.

Ruby LLM’s design prioritizes speed and clarity. A minimalist dependency tree keeps bundle size low, while a Rails integration adds chat UI scaffolding and Active Record support. The library’s provider list includes OpenAI, Anthropic, Gemini, Vertex, Bedrock, Deep Seek, Mistral, Ollama, and any OpenAI‑compatible endpoint, making it a practical choice for Ruby‑centric AI projects.