AgentScout / Compare / Langfuse vs LangSmith
Langfuse vs LangSmith
Two closely related evals & observability tools, side by side. Everything here comes from our directory listing; pricing is as each maker states it. Both are listed for: monitor & evaluate agents.
 Langfuse |  LangSmith | |
|---|---|---|
| Description | Open-source LLM observability, tracing and evals. | Tracing, evals and monitoring for LLM apps and agents. |
| Category | evals & observability | evals & observability |
| Audience | For builders | For builders |
| Pricing (as stated) | Open source + paid cloud | Free tier + paid plans |
| Maturity | Mature | Mature |
| GitHub stars | Not tracked | Not tracked |
| Use cases | monitor & evaluate agents | automate workflows, monitor & evaluate agents |
| Link checked | 2026-10-14 | 2026-10-14 |
| Official site | Visit ↗ | Visit ↗ |
We don't benchmark tools or rank one above the other here. Check each official site for current pricing and features before you choose.
Related: Langfuse · LangSmith · More evals & observability tools · Best MCP servers