# Arize Phoenix vs Helicone — Fit & Features

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

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

## Compare fit, features, and limitations

### Arize Phoenix
Debug and evaluate AI applications using open-source tracing and observability.
Best fit: AI engineers testing agent quality and monitoring production behavior.
- LLM tracing
- AI evaluation
- Dataset experiments
Before you choose: Use representative test cases and inspect evaluator failures. Check trace retention, sensitive-data handling, and usage costs.
Pricing: https://arize.com/pricing/
- [Read Arize Phoenix profile](https://trutool.co/tools/arize-phoenix): Read Arize Phoenix profile

### 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