Langfuse vs Vellum
A detailed comparison to help you choose between Langfuse and Vellum.
Langfuse Open-source LLM observability and evaluation | Vellum LLM app development platform | |
|---|---|---|
| Rating | 4.8 (162 reviews) | 4.8 (237 reviews) |
| Pricing Model | freemium | freemium |
| Starting Price | Free tier available | Free tier available |
| Best For | Engineering teams needing production observability and evaluation for their LLM applications | Product and engineering teams building LLM-powered features who need structured prompt management |
| Free Tier | ||
| API Access | ||
| Team Features | ||
| Open Source | ||
| Tags | free tieropen sourceapi access | free tierapi access |
| Visit Langfuse → | Visit Vellum → |
Langfuse
Pros
- + Full LLM call tracing
- + Evaluation framework
- + Self-hostable
Cons
- - Developer tool only
- - UI has learning curve
Vellum
Pros
- + Prompt version control
- + Evaluation framework
- + Workflow builder
Cons
- - Developer tool
- - Less known vs LangChain
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