Lunary vs LangSmith
Put customer conversations, feedback and agent traces in one place. See how Lunary compares with LangSmith.
$20 per user / month. Payment required to activate your workspace.
For customer-facing AI, start with Lunary: replay the conversation, see the feedback and follow the model or tool call behind the answer. LangSmith is also worth considering for a trace-and-experiment workflow.
Start with the customer
Replay the conversation and its feedback before diving into the trace.
Follow the failing step
Inspect linked model calls, tools, latency and errors.
Bring the team into the fix
Version prompts and test revisions in the playground.
At a glance
| Decision | Lunary | LangSmith |
|---|---|---|
| Investigation entry point to trial | Conversations, feedback, and application runs | Traces, runs, and evaluation workflow |
| Prompt work | Templates and playground | Prompt engineering and playground workflows |
| Instrumentation | SDKs and documented OpenTelemetry ingestion | Framework-independent tracing and SDKs |
| Deployment | Documented self-hosting; verify edition | Documented self-hosting; verify eligibility |
| Migration | Map representative examples and instrument new traffic | SDK queries or eligible bulk exports for archives |
See your workflow in Lunary.
Explore conversations, traces and prompt versions with our team.
From a customer report to the cause
In Lunary, follow the conversation to its model and tool runs. In LangSmith, inspect the trace and evaluation workflow; compare how easily your team finds the failing step.
Use your existing stack
LangSmith supports framework-independent tracing. Lunary offers SDK integrations and OpenTelemetry ingestion; verify nested operations, session IDs and errors with your application.
Check deployment and export eligibility
Both publish self-hosting options with edition requirements to confirm. LangSmith supports SDK queries and bulk exports; bulk-export eligibility depends on plan and signup date.
Questions & answers
Can I use Lunary with LangChain?
Yes, Lunary documents a LangChain integration. Verify compatibility with your installed versions.
Does LangSmith require LangChain?
No. Its tracing supports other frameworks too.
By Lunary · Documentation reviewed Sep 16, 2026
Sources & methodology (10)
Based on vendor documentation, not an independent benchmark or hands-on rating. Features and plans can change.
Bring your next AI issue to Lunary.
Follow the conversation. Find the cause. Test the fix.
$20 per user / month. Payment required to activate your workspace.