MathisVerstrepen/Meridian

Supports visual graph-based workflow construction with modular nodes for input (text, files, GitHub repos), processing (LLM calls, parallel model aggregation, conditional routing), and branching conversations. Built on FastAPI with Neo4j for graph persistence and PostgreSQL for structured data, integrating OpenRouter.ai for multi-model access and optional Sentry monitoring. Execution engine enables running entire graphs or sub-sections with real-time visual planning, alongside Markdown, LaTeX, syntax highlighting, and Mermaid diagram generation in the chat interface.