# Helicone vs Langfuse — Fit & Features

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

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

## Compare fit, features, and limitations

### Helicone
Monitor LLM requests, costs, and latency through an AI observability platform.
Best fit: AI engineers testing agent quality and monitoring production behavior.
- Request logging
- Cost monitoring
- Model routing
Before you choose: Use representative test cases and inspect evaluator failures. Check trace retention, sensitive-data handling, and usage costs.
Pricing: https://www.helicone.ai/pricing
- [Read Helicone profile](https://trutool.co/tools/helicone): Read Helicone profile

### 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