Compare software

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