Pick Langfuse if
teams shipping LLM apps who need traces and a cost tile, not another chat UI.
Read the Langfuse pageLangfuse vs LangSmith
Our take
Pick Langfuse if teams shipping LLM apps who need traces and a cost tile, not another chat UI. Pick LangSmith if engineers who already write agent code and will open traces when a run surprises them. Skip Langfuse if people who only want a gateway (LiteLLM) or a framework (LangChain) without an observability SKU.
LangSmith
LangChain’s hosted observability and eval
Best for
Langfuse Debug and cost-track generations
LangSmith See what an agent did, then score it
Free plan
Langfuse $0 · for the MIT core. ee/ is not the community license
LangSmith $0 · / seat / month. 1 seat. 5,000 base traces/month, then pay-as-you-go. 7 LSU Fleet allowance/month. Community support
Lowest paid
Langfuse Enterprise $2/mo
LangSmith Plus $39/mo
Next step up
Langfuse Core $29/mo
LangSmith
Runs where
Langfuse Local or hosted
LangSmith Hosted
Watch out
Langfuse Hobby is two users and 30-day retention
LangSmith Traces after 5k / 10k bill in arrears
Last checked
Langfuse 2026-10-19 · langfuse.com/pricing
LangSmith 2026-10-22 · langchain.com/pricing
Which one, then?
Pick LangSmith if
engineers who already write agent code and will open traces when a run surprises them.
Read the LangSmith page