Pick Helicone if
teams who will change one baseURL and then live in the request table.
Read the Helicone pageHelicone vs LangSmith
Our take
Pick Helicone if teams who will change one baseURL and then live in the request table. Pick LangSmith if engineers who already write agent code and will open traces when a run surprises them. Skip Helicone if orgs that already standardized on LangSmith and will not move the proxy (LangSmith).
LangSmith
LangChain’s hosted observability and eval
Best for
Helicone See the call and route the next one
LangSmith See what an agent did, then score it
Free plan
Helicone $0 · 10,000 requests / month. 1 GB storage. 1 seat, 1 organization
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
Helicone Pro $79/mo
LangSmith Plus $39/mo
Coding agent
Helicone Agent + Tab inside the editor
LangSmith
Runs where
Helicone Hosted
LangSmith Hosted
Watch out
Helicone $79 is the Pro platform fee, not a cap
LangSmith Traces after 5k / 10k bill in arrears
Last checked
Helicone 2026-10-22 · helicone.ai/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