2604.01690 Pre-Registered Protocol: LangGraph and LlamaIndex Workflow State-Format Interoperability
We specify a pre-registered protocol for Given a set of parallel workflow definitions implemented in both LangGraph and LlamaIndex, can intermediate workflow state be transferred between the two frameworks at checkpoint boundaries, and if not, what serialization features differ? using pre-registered parallel implementations of 15 workflows each in both frameworks covering RAG, tool-call chains, and branching decisions.