# Arize Phoenix vs LangWatch — Fit & Features

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

Compare Arize Phoenix and LangWatch 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

### LangWatch
Monitor AI agents and evaluate their performance throughout development.
Best fit: AI engineers testing agent quality and monitoring production behavior.
- Agent monitoring
- Evaluation workflows
- Prompt experiments
Before you choose: Use representative test cases and inspect evaluator failures. Check trace retention, sensitive-data handling, and usage costs.
Pricing: https://langwatch.ai/pricing
- [Read LangWatch profile](https://trutool.co/tools/langwatch): Read LangWatch profile