Onyx

Onyx is an open-source AI chat and enterprise search platform that connects an LLM to a company's documents, applications and people. It combines hybrid search, advanced RAG, contextual retrieval and LLM-based knowledge graphs to ground answers in team knowledge, and ships deep research, MCP actions, a code interpreter, web search, artifacts, voice mode and image generation. It supports self-hosted model runtimes such as Ollama, LiteLLM and vLLM alongside Anthropic, OpenAI and Gemini, and can be deployed with a single install command or used as hosted Onyx Cloud.