HTTP vs AgentKit vs LangChain: Navigating Agent Integration Tradeoffs

While HTTP, AgentKit, and LangChain all achieve the same functional outcome, the choice between them hinges on hidden factors—your team's infrastructure, whether agents need to handle payments, and the total cost of integration. Most engineers overlook the payment model, but for LLM agents calling paid APIs, selecting the right integration pattern can dramatically affect both economics and capability.