Phoenix - AI Observability Platform Open-source AI observability and evaluation platform for LLM applications with tracing, evaluation, datasets, experiments, and real-time monitoring. When to use Phoenix Use Phoenix when: - Debugging LLM application issues with detailed traces - Running systematic evaluations on datasets - Monitoring production LLM systems in real-time - Building experiment pipelines for prompt/model comparison - Self-hosted observability without vendor lock-in Key features: - Tracing : OpenTelemetry-based trace collection for any LLM framework - Evaluation : LLM-as-judge ev…