Helicone vs LangSmith
| Tagline | Open-source LLM observability and gateway | Debug, test and monitor LLM apps and agents |
|---|---|---|
| Category | AI Agents | AI Agents |
| Pricing | Open Source | Freemium |
| Upvotes | 0 | 0 |
| Comments | 0 | 0 |
| Page views | 0 | 0 |
| Click-through to site | 0.0% | 0.0% |
| Readiness Score | 86/100 | 81/100 |
| Launched | Oct 5, 2026 | Oct 5, 2026 |
| Maker | — | — |
What is Helicone?
Helicone logs, monitors and caches LLM requests, giving teams cost tracking and debugging through a proxy gateway.
What is LangSmith?
LangSmith from LangChain helps teams trace, evaluate and monitor LLM applications and agents in development and production.
Not sold on either? See alternatives to Helicone or alternatives to LangSmith.
Verdict
Helicone leads on 1 of the measurable metrics above (votes, engagement, click-through and readiness). Choose Helicone if you want open-source LLM observability and gateway; choose LangSmith if you want debug, test and monitor LLM apps and agents.
Is Helicone better than LangSmith?
On AskableHQ's community and engagement data, Helicone currently performs better, but the right choice depends on your use case.
Which is cheaper, Helicone or LangSmith?
Helicone is Open Source; LangSmith is Freemium. Check each website for current plans.