LangSmith alternatives
The main alternatives to LangSmith in Evals & observability are Helicone, Langfuse. The table compares their verified basics. For task-based picks, see the rankings linked on each tool page.
| Tool | What it is | Pricing model | Integrations | Self-hostable | Last verified |
|---|---|---|---|---|---|
| LangSmith | Tracing, evaluation and monitoring for LLM apps. | freemium | API | No / not listed | Oct 14, 2026 |
| Helicone | Open-source LLM observability and gateway. | open-source | API | Yes | Oct 14, 2026 |
| Langfuse | Open-source LLM observability, tracing and evals. | open-source | API | Yes | Oct 14, 2026 |