LangSmith vs OpenTelemetry: Which Should You Choose in 2026?
Choosing between LangSmith and OpenTelemetry 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.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
LangSmith
Debug, monitor, and optimize your LLM applications and AI agents with comprehensive observability.
Best for you if:
- • You need ai observability features specifically
- • Debug LLM applications with detailed agent tracing.
- • Monitor key business metrics with live dashboards and alerts.
OpenTelemetry
Observability framework for cloud-native software
Best for you if:
- • You want the higher-rated option (9.0/10 vs 0.0/10)
- • You need something completely free
- • You need api tools features specifically
- • OpenTelemetry is an open-source observability framework for traces and metrics
- • It standardizes instrumentation across languages for monitoring tools
| At a Glance |  LangSmith | |
|---|---|---|
Price | Free + Paid | Free |
Best For | AI Observability | API Tools |
Rating | —/100 | 90/100 |
| Feature | LangSmith | OpenTelemetry |
|---|---|---|
| Pricing Model | Freemium | Free |
| Editorial Score | — | 90 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | AI ObservabilityDebugging | API ToolsDebugging |
Understanding the Differences
Both LangSmith and OpenTelemetry solve similar problems, but they approach them differently.LangSmith positions itself as "debug, monitor, and optimize your llm applications and ai agents with comprehensive observability." while OpenTelemetryfocuses on "observability framework for cloud-native software". These differences matter depending on what you're trying to accomplish.
When to Choose LangSmith
LangSmith makes sense if you're looking for a budget-friendly option with a free tier solution.
When to Choose OpenTelemetry
OpenTelemetry is worth considering if you need a free tool. Scoring 90/100, it edges ahead in our evaluation.
Who Should Use What?
Bootstrapped or small team?
When every dollar counts, LangSmith lets you get started without pulling out your credit card.
We'd pick: LangSmith
Growing fast?
Your team doubled last quarter and you need tools that won't break when you add 50 more people. OpenTelemetry is built for teams that are leveling up.
We'd pick: OpenTelemetry
Enterprise with complex needs?
You need SSO, compliance certifications, and a support team that picks up the phone. Both have enterprise tiers—compare their security features.
We'd pick: OpenTelemetry
Still not sure? Answer these 3 questions
How much can you spend?
Zero budget? OpenTelemetry won't cost you anything.
Do you care what other users think?
Both have similar review counts. Read a few before you commit.
Expert opinion or crowd wisdom?
Our team rated OpenTelemetry higher (90/100). But the community has upvoted OpenTelemetry more (0 votes). Pick your source of truth.
Key Takeaways
What OpenTelemetry Does Better
- Higher overall score (90/100)
- Our recommendation for most use cases
Consider LangSmith If
- You want to start free and scale later
- Its specific features better match your workflow
- You prefer its interface or design approach
The Bottom Line
If we had to pick one, we'd go with OpenTelemetry (90/100). But the honest answer is that "better" depends on your situation. OpenTelemetry scores higher in our analysis, but LangSmith might be the right choice if its specific strengths align with what you need most. Take advantage of free trials to test both before committing.
Frequently Asked Questions
Is LangSmith or OpenTelemetry better?
Based on our analysis, OpenTelemetry scores higher with 90/100. LangSmith isfreemium while OpenTelemetry is free. The best choice depends on your specific needs and budget. We recommend testing both with free trials if available.
Can I switch from LangSmith to OpenTelemetry easily?
Migration difficulty varies. Check if both tools support data export/import in compatible formats. Some tools offer migration assistance or have integration partners who can help with the transition.
Do LangSmith and OpenTelemetry offer free trials?
Most software in this category offers free trials or free tiers. LangSmith is freemium with a free tier.OpenTelemetry is completely free. Visit their websites for current trial offers.