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LangSmith vs Helicone: catalog facts
LangSmith	Helicone
Freemium Can be tried for free, with paid plans listed on its pricing page.	Freemium Hosted plans start with a 7-day free trial and no credit card; the open-source code can be…
Web	Web, Self-hosted
Detailed step-by-step agent tracing SDKs for Python, TypeScript, Go and Java	Logs and analyses LLM requests in one place Tracks costs across providers
Proprietary hosted service Self-hosting requires Kubernetes	Recently joined Mintlify, so its roadmap is uncertain Hosted version is a paid service after the trial
Self-hosted, Hosted service	Self-hosted, Hosted service
Closed source	Open source
License not stated	License: Apache-2.0
Account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked September 26, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.