# Phoenix

**Source:** https://www.startuphub.ai/startups/phoenix
**Profile type:** Startup

> An open-source platform for tracing, evaluating, and debugging AI agents and LLM applications.

## About

Phoenix is an open-source AI observability, evaluation, and experimentation platform developed by Arize AI. It provides end-to-end visibility into AI workflows, enabling developers to monitor, debug, and optimize Large Language Model (LLM), Retrieval Augmented Generation (RAG), and AI agent applications. Users can trace agent interactions, evaluate performance, debug issues, and run experiments to improve AI system quality.

## Key facts

- **Slug:** phoenix
- **Website:** https://phoenix.arize.com
- **Employees:** 247
- **Operating status:** Active
- **Sectors / tags:** AI Observability, LLM Evaluation, AI Testing, Developer Tools, Open Source
- **Social:**
  - LinkedIn: https://www.linkedin.com/company/arizeai
  - Twitter: https://twitter.com/arizeai
  - GitHub: https://github.com/Arize-ai

## StartupHub.ai scores

- **Ahrefs DR:** 78/100
- **Effective DR:** 49/100
- **Agent Readiness:** D (59/100)
- **Site Speed:** 37/100
- **Data Trust:** 90/100

## Tech stack

Detected on phoenix.arize.com, last scanned 2026-10-18.

- **Frontend:** jQuery, Alpine.js, Tailwind CSS
- **Analytics:** Google Tag Manager, Segment
- **SEO:** Yoast SEO
- **CMS / Builders:** WordPress
- **CDN:** Cloudflare
- **Video / media:** Vimeo

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