Deep-dive into llm4s, a production-grade Scala framework for building LLM applications. From type-safe error handling to provider abstraction and context management, it covers agent orchestration and shipping reliable LLM systems in Scala.
After five major contributions across error handling, type safety, and safety utilities, here are the production patterns that work and the ones that do not. A practical summary of trade-offs, guardrails, and what we kept in llm4s.