Pick LangSmith if
engineers who already write agent code and will open traces when a run surprises them.
Read the LangSmith pageLangSmith vs Relevance AI
Our take
Pick LangSmith if engineers who already write agent code and will open traces when a run surprises them. Pick Relevance AI if gTM operators who will spend Actions on research, CRM updates, and chat @mentions.
LangSmith
LangChain’s hosted observability and eval
Relevance AI
agent chat + workforce studio
Best for
LangSmith See what an agent did, then score it
Relevance AI Delegate a GTM task to an agent in chat
Free plan
LangSmith $0 · / seat / month. 1 seat. 5,000 base traces/month, then pay-as-you-go. 7 LSU Fleet allowance/month. Community support
Relevance AI No free plan
Lowest paid
LangSmith Plus $39/mo
Relevance AI Pro $19
Coding agent
LangSmith
Relevance AI Workforce canvas
Runs where
LangSmith Hosted
Relevance AI
Watch out
LangSmith Traces after 5k / 10k bill in arrears
Relevance AI Public dollars live on the docs pricing page
Last checked
LangSmith 2026-10-22 · langchain.com/pricing
Relevance AI 2026-10-22 · relevanceai.com/docs/get-started/pricing
Which one, then?
Pick Relevance AI if
gTM operators who will spend Actions on research, CRM updates, and chat @mentions.
Read the Relevance AI page