L
LangSmith
View Tool Specs →Enterprise LLM observability, evaluation, debugging, and prompt testing platform.
VS
Portkey
View Tool Specs →P
Production AI Gateway and control plane for routing, semantic caching, and guardrails.
Executive Verdict & Recommendation
LangSmith is the premier platform for deep agent trace trees, evaluation datasets, and prompt engineering, while Portkey is the leading AI Gateway for semantic caching, fallback routing, guardrails, and production traffic governance.