LangSmith review
Observability and evals for LLM apps
4.7
Freemium— usersCommunity TrustedFree Tier
67
ToolHund Score
Solid
Verified
Our verdict
LangSmith (by LangChain) provides tracing, datasets, evaluations and prompt playgrounds for LLM apps — framework-agnostic.
ToolHund Score: 67/100 · Best for: Teams debugging and evaluating LLM apps in production.
Strengths
- Tracing
- Strong fit for teams debugging and evaluating llm apps in production.
- Real free plan you can ship work with
Weaknesses
- Advanced features may require a higher tier
- Output quality varies with prompt skill
- Limited offline use — internet required
Pricing
Free · Plus from $39/user/mo
Strong — free plan covers most casual use, paid unlocks pro workflows
Features
- Tracing
- Datasets & evals
- Prompt playground
- Framework-agnostic