OSS Discovery

UN
Global
AI & MACHINE LEARNING
SELF-HOSTABLE
ACTIVELY MAINTAINED
FREEMIUM
Arize Phoenix

ARIZE PHOENIX

Arize Phoenix: Open-source LLM platform for real-time tracing, evaluation, and optimization. Automate instrumentation, refine prompts interactively, and monitor AI apps with OpenTelemetry-driven transparency—framework-agnostic, vendor-free, and built for scalable, lock-in-free innovation. (49 words)

GITHUB STARS
9.4k
+12% this month
FORKS
834
Active community
LAST PUSH
Apr 24, 2026
High momentum
WATCHERS
53
Tracking updates
LICENSE
Other
Commercial use
Arize Phoenix: Open-source LLM platform for real-time tracing, evaluation, and optimization. Automate instrumentation, refine prompts interactively, and monitor AI apps with OpenTelemetry-driven transparency—framework-agnostic, vendor-free, and built for scalable, lock-in-free innovation. (49 words)

High Performance

Built for speed and minimal overhead.

Self-hostable

Docker, Kubernetes, or bare metal

Developer Native

Programmable via any language workflow

SUPPORTED LANGUAGES

Python
Python
TypeScript
TypeScript
Jupyter Notebook
Jupyter Notebook
Shell
Shell
JavaScript
JavaScript
PLpgSQL
PLpgSQL
Makefile
Makefile
CSS
CSS
HTML
HTML
Go Template
Go Template
Dockerfile
Dockerfile
Batchfile
Batchfile
Mako
Mako

VISUAL INTERFACE

Screenshot 1
Screenshot 2
Screenshot 3

The Quick Glance

Status
Active
Category
AI & Machine Learning
Pricing
Freemium
Self-Hosted
Yes
Available on
Web
Latest Release
arize-phoenix-v14.11.0
Apr 22, 2026

Relative Standing — across 1,284 tools

STARS9.4k
Top 36% globally
FORKS834
Top 38% in Open Source
ACTIVITYVery High
Top 13% Activity
WATCHERS53
Top 49% Community