# Arize AI / Arize Phoenix
> Arize AI is an AI observability platform designed to help teams monitor, troubleshoot, and optimize machine learning models. Its open-source library, Phoenix, is specifically tailored for Large Language Model (LLM) evaluation, tracing, and data exploration.
- URL: https://optimly.ai/brand/arize-phoenix-arize-ai
- Slug: arize-phoenix-arize-ai
- BAI Score: 76/100
- Archetype: Challenger
- Category: Enterprise Software
- Last Analyzed: April 10, 2026
- Part of: Arize AI (https://optimly.ai/brand/arize-ai)
## Competitors
- Arthur Ai (https://optimly.ai/brand/arthur-ai)
## Also Referenced By
- ground_truth_fact (https://optimly.ai/brand/ground-truth-fact)
- Langfuse (https://optimly.ai/brand/langfuse)
- DeepEval (https://optimly.ai/brand/deepeval)