# LangSmith

6 Hacker News commenters recommended LangSmith and 8 criticized it, November 2025 to November 2026. It was recommended in 4 of 13 months.

**Verdict:** Developers use it for technical tracing and post-hoc debugging and cost tracking of LLM and agent runs. Critics mostly point to a weak UI and rising cost.

## What people warn about

- Gets expensive quickly (2 comments): "gets quite expensive quite fast" ([source](https://news.ycombinator.com/item?id=46398376)) "paying huge amount of money for both" ([source](https://news.ycombinator.com/item?id=48773513))

## Alternatives hackers recommend

- [Langfuse](https://hackerapproved.com/p/langfuse.md): 29 recommend
- [Laminar](https://hackerapproved.com/p/laminar.md): 5 recommend

## Where to get it

- [Visit the official site](https://www.langchain.com/langsmith/observability)

## Cite as

Hacker Approved, "LangSmith", https://hackerapproved.com/p/langsmith/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).