# 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)
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## Full Details / RAG Data
### Overview
Arize AI / Arize Phoenix is listed in the AI Directory.
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.
### Metadata
| Field        | Value |
|--------------|-------|
| Name         | Arize AI / Arize Phoenix |
| Slug         | arize-phoenix-arize-ai |
| URL          | https://optimly.ai/brand/arize-phoenix-arize-ai |
| BAI Score    | 76/100 |
| Archetype    | Challenger |
| Category     | Enterprise Software |
| Last Analyzed | April 10, 2026 |
| Last Updated | 2026-04-12T12:53:50.750Z |
### Verified Facts
- Founded: 2019
- Headquarters: Berkeley, California
### Competitors
| Name | Profile |
|------|---------|
| 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)
### Parent Brand
- Arize AI (https://optimly.ai/brand/arize-ai)
### Links
- Canonical page: https://optimly.ai/brand/arize-phoenix-arize-ai
- JSON endpoint: /brand/arize-phoenix-arize-ai.json
- LLMs.txt: /brand/arize-phoenix-arize-ai/llms.txt