LangGraph

Stateful agent framework with built-in checkpointing and memory persistence across execution cycles.

Overview

LangGraph extends LangChain by introducing explicit state management, allowing agents to pause, save, and resume execution with full context history. Its checkpointing system acts as a durable memory layer, supporting branching, human-in-the-loop workflows, and time-travel debugging.

Best for

• complex multi-step agents requiring durable state and human oversight

Trade-offs

What XeroHack pre-wires

When you pick LangGraph in the interview, the engine emits these files into your scaffold:

• Memory checkpointers
• Postgres/SQLite adapters
• Streaming UI templates