Latitude LLM: How This Open-Source AI Engineering Platform Builds a Reliability Loop Through Observability

Summary: Latitude is an open-source AI engineering platform that prioritizes observability and evaluations by capturing production LLM traffic—including prompts, inputs/outputs, tool calls, latency, token usage, and costs—to build an eval-driven reliability loop. It supports gradual adoption: start with telemetry and prompt playground, then add datasets, evaluations, experiments, and optimization. The monorepo uses TypeScript, Drizzle ORM, BullMQ, Docker Compose, and PromptL chains, with clear patterns for services, repositories, migrations, and background jobs. This guide details contribution philosophy, build commands, database practices, ClickHouse migrations, prompt running architecture, and more for developers with college-level or higher education. Latitude LLM: Architecture and Development Practices …