# Langfuse vs Promptfoo — Fit & Features

Canonical: https://trutool.co/compare/langfuse-vs-promptfoo
Author: Snehil (https://trutool.co/authors/snehil)

Compare Langfuse and Promptfoo by use case, features, limitations, and evaluation questions.

## Compare fit, features, and limitations

### Langfuse
Trace, evaluate, and improve LLM applications with an open-source engineering platform.
Best fit: AI engineers testing agent quality and monitoring production behavior.
- LLM tracing
- Prompt management
- Evaluation datasets
Before you choose: Use representative test cases and inspect evaluator failures. Check trace retention, sensitive-data handling, and usage costs.
Pricing: https://langfuse.com/pricing
- [Read Langfuse profile](https://trutool.co/tools/langfuse): Read Langfuse profile

### Promptfoo
Test prompts and models with repeatable evaluations and AI red teaming.
Best fit: AI engineers testing agent quality and monitoring production behavior.
- Prompt testing
- Model comparison
- Red teaming
Before you choose: Use representative test cases and inspect evaluator failures. Check trace retention, sensitive-data handling, and usage costs.
Pricing: https://www.promptfoo.dev/pricing/
- [Read Promptfoo profile](https://trutool.co/tools/promptfoo): Read Promptfoo profile