Phoenix

Local LLM tracing and evals workspace from Arize — pip install and open.

Install Repository Website Compare

Fit.

Catalog snapshot

Platforms: Linux, Macos, Windows, Docker
Operating systems: Linux, macOS, Windows
Ram floor: 2 GB
Gpu: Not needed
Docker: Yes
Setup: Beginner
Deploy as: Local, Self-hosted
Commercial use: Check the license

Custom license terms in the repo — review before commercial hosting.

Project.

Fetched Sep 12, 2026¹

License: Other
Stars: 11.4k¹
Forks: 1.1k¹
Open issues: 839¹
Language: Python¹
Last commit: Sep 12, 2026¹
Tags: observabilityevalstracing

About.

Phoenix is Arize’s open LLM observability and evals workspace: trace calls, replay failures, label datasets, and compare prompt variants in a local UI. Notebooks-first and pip-installable. Check the repo’s license terms before SaaS use.

tracing · evals · experiment tracking · notebook workflows

Alternatives.

Nearby.

All LLM infrastructure

LllamafileSingle-file LLM runtime from Mozilla. Download, chmod, run.Compare
LLiteLLMProxy that translates many model APIs into one OpenAI-shaped client.Compare
VvLLMHigh-throughput model server for GPU inference.Compare
Lllama.cppC/C++ runtime that made local GGUF models practical.Compare
EexoLink everyday devices into one cluster and run models too big for any single machine.Compare