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Open-source alternatives to Arize AI

7 projects replace Arize AI, the AI observability. 7 shipped code in the last 30 days.

7 open-source alternatives

Most-starred first. Stars, growth and activity are live from GitHub.

LangfuseMost adopted

Open source LLM engineering platform for AI-powered applications

Stars
36.1k
Growth
+1.2k
Launched
May 2023
Custom licenseupdated today
Arize PhoenixGrowing fastest

Open-source LLM tracing & evaluation for AI optimization

Stars
11.9k
Growth
+364
Launched
Nov 2022
Custom licenseupdated today
OpenLLMetry#3 by stars

Monitor LLM performance with open-source observability

Stars
7.5k
Growth
+60
Launched
Sep 2023
Apache-2.0updated 1d ago
LangWatch#4 by stars

Simulation-based testing and evaluation for AI agents

Stars
5k
Growth
+142
Launched
Sep 2023
Apache-2.0updated today
Latitude#5 by stars

Full observability for AI agents in production

Stars
4.7k
Growth
+65
Launched
Jun 2024
MITupdated today
Laminar#6 by stars

AI-powered platform for engineering LLM products

Stars
3.4k
Growth
+147
Launched
Aug 2024
Apache-2.0updated today
OpenLIT#7 by stars

Monitor, debug, and scale LLM applications with ease

Stars
2.9k
Growth
+88
Launched
Jan 2024
Apache-2.0updated today

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