Lunatrace vs LangSmith: Which Should You Choose in 2026?
Choosing between Lunatrace and LangSmith comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
By Toolradar Team · Last updated February 22, 2026 · Methodology
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Lunatrace
Lunatrace
Best for you if:
- • You need debugging features specifically
- • You need lunatrace
- • You want to start free and upgrade later
LangSmith
Debug, monitor, and optimize your LLM applications and AI agents with comprehensive observability.
Best for you if:
- • You need real-time analytics features specifically
- • Debug LLM applications with detailed agent tracing.
- • Monitor key business metrics with live dashboards and alerts.
| At a Glance |  LangSmith | |
|---|---|---|
Price | Free + Paid | Free + Paid |
Best For | Debugging | Real-Time Analytics |
Rating | —/100 | —/100 |
| Feature | Lunatrace | LangSmith |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| Editorial Score | — | — |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | DebuggingAutomation | Real-Time AnalyticsDebugging |
How Lunatrace and LangSmith Compare
Lunatrace
Lunatrace
Free tier available
LangSmith
Debug, monitor, and optimize your LLM applications and AI agents with comprehensive observability.
Free tier available
Lunatrace is a debugging tool. LangSmith is in real-time analytics.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: Lunatrace
Want the highest-rated option?
Neither has been rated yet.
Go with: Lunatrace
Value user reviews?
Neither has user reviews yet.
Go with: Lunatrace
3 Questions to Help You Decide
What's your budget?
Both are freemium. Pricing won't help you decide here.
What's your use case?
Lunatrace is a debugging tool. LangSmith is in real-time analytics. Pick the category that matches your needs.
How important are ratings?
Not all tools have been rated yet.
Key Takeaways
Lunatrace
- Free tier available
- Our pick for this comparison
LangSmith
- Better fit for real-time analytics
The Bottom Line
Lunatrace is our pick.
Frequently Asked Questions
Is Lunatrace or LangSmith better?
Lunatrace scores high/100 in our evaluation. Both are freemium.
What are Lunatrace and LangSmith used for?
Lunatrace: Lunatrace. LangSmith: Debug, monitor, and optimize your LLM applications and AI agents with comprehensive observability..
What does Lunatrace cost vs LangSmith?
Lunatrace is freemium (free tier + paid plans). LangSmith is freemium (free tier + paid plans). Visit their websites for detailed pricing.