A chain runs start to finish or it doesn't run at all. LangGraph exists because most real agent workflows need a third option: pause, wait, and pick back up exactly where they left off. ........ LangG
LiteLLM does the same job OpenRouter does — one API for every LLM provider — but hands you the router itself instead of renting you access to one. ........ LiteLLM ships as two things: a Python SDK fo
