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Compare observability & evals

Helicone vs LangSmith

Two observability & evals tools for AI agents, side by side. Facts come from each tool's own site.

Helicone

helicone.ai

AI gateway with routing and LLM observability.

Open sourceNew
Visit Helicone

LangSmith

langchain.com

LangChain's tracing and monitoring platform for agents and LLM apps.

New
Visit LangSmith
Helicone compared with LangSmith
HeliconeLangSmith
What it doesAI gateway with routing and LLM observability.LangChain's tracing and monitoring platform for agents and LLM apps.
In their wordsHelicone / AI Gateway & LLM ObservabilityLangSmith: Agent & LLM Observability Platform
Open sourceYesNo
Websitehelicone.ailangchain.com
Link checked2026-10-162026-10-16

More options:Alternatives to HeliconeAlternatives to LangSmithGuide: Best observability and eval tools for AI agents

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