LangSmith is purpose-built for teams deep in the LangChain/LangGraph ecosystem — step-by-step chain and agent debugging, dataset-based evals, and human annotation queues, priced per seat ($39/user/mo). It has no gateway and no enforcement: it is a tracing and evaluation layer that sits alongside your app, not in front of the provider call. Wardin is provider- and framework-agnostic — it works the same whether the caller is LangChain, raw SDK calls, or an agentic client like Claude Code — and prices at the gateway/org level, not per developer seat.
If your stack is LangChain or LangGraph, LangSmith's chain-and-agent-step debugging and its dataset/human-annotation workflow are more mature and more purpose-built than anything Wardin offers today — that depth is a real, current gap on our side, not a framework difference we can shrug off.
Choose LangSmith if you're deep in the LangChain/LangGraph ecosystem and need step-level chain debugging and mature dataset annotation. Choose Wardin if your traffic spans multiple frameworks and clients (raw SDK, Claude Code, Cursor, CI) and you need the request itself governed — budget, policy, and audit — not just traced.