What framework should you pick to build an agent today?
A developer who already knows LangGraph and the OpenAI SDK asks which framework to choose for a first agent. The pragmatic answer: start with what you already know instead of learning a new tool. The framework matters less than two reliability habits — a verification step before the agent claims something is done, and a log of what it really did. Build one small agent end to end, and only switch frameworks if the current one fights you.