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Overview
Arize Phoenix is an open-source observability and evaluation platform purpose-built for LLM applications and AI agents. It provides developers with the tools to trace, debug, and improve the performance of their AI systems by visualizing complex decision-making processes and identifying where models fail or produce poor responses.
Developers love Phoenix for its seamless integration into existing workflows and its ability to run locally or self-hosted in their own environment. With over 3 million monthly downloads and a strong community of 10k+ GitHub stars, Phoenix has become a go-to solution for AI engineers who need reliable monitoring and evaluation capabilities without vendor lock-in.
The platform uses the OpenInference specification to capture telemetry data that helps understand LLM execution and surrounding application context, making it easy to troubleshoot issues related to retrieval, tool execution, and overall workflow performance.
Key Features
- **LLM Tr
