LangSmith vs Vellum

A detailed comparison to help you choose between LangSmith and Vellum.

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Verdict: Vellum wins

Vellum scores 4.8/5, edging out LangSmith at 4.4/5. Try Vellum if you need a top-rated option.

LangSmith

LLM ops and observability platform

Vellum

LLM app development platform

Rating4.4 (undefined reviews)4.8 (undefined reviews)
Pricing Model
Starting PriceFree tier availableFree tier available
Best For
Free Tier
API Access
Team Features
Open Source
Tags
free tierapi access
free tierapi access

LangSmith

Pros

  • + Full LLM observability
  • + Evaluation framework
  • + Trace every LLM call

Cons

  • - Best with LangChain apps
  • - Complex setup for standalone use
View full LangSmithreview →

Vellum

Pros

  • + Prompt version control
  • + Evaluation framework
  • + Workflow builder

Cons

  • - Developer tool
  • - Less known vs LangChain
View full Vellumreview →

Frequently Asked Questions

Which is better, LangSmith or Vellum?
Vellum scores higher at 4.8/5 vs 4.4/5 for LangSmith, making it the better-rated option in our comparison.
What is the difference between LangSmith and Vellum?
Both are AI tools, but they serve different use cases. Visit each tool's page for details.
Is LangSmith or Vellum more affordable?
LangSmith pricing varies, Vellum pricing varies. Check the comparison table above for current pricing.

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