LangChain
LangSmith
Tracing and evals for LLM applications
Pending testFreemium
Score
- Quality
- Pending
- Price
- Pending
- Speed
- Pending
- Ease of starting
- Pending
Last tested: not yet. Pending is not a zero.
Waiting on the agent bench: a multi-step task with a tool call and a checkable result. No score until that test is published.
Plain-language take
Written from public product information. This is not a test result.
See what an agent did, then score the runs. This is observability, not another framework.
Pricing
Freemium · checked 16 October 2026
LangSmith has a free developer tier and paid plans. See langchain.com/pricing. No dollar amount is copied here.
Pricing sourceUse cases
Alternatives
- LangGraph — Graph-shaped, stateful agent workflows