“My initial recommendation would be to run a proof of concept with Langfuse and Opik, and compare them against Phoenix if OpenTelemetry compatibility is particularly important.”
“- Open-source core (MIT license).”
“- LLM traces, sessions, prompt management, datasets, experiments, and evaluations.”
“- Supports Docker Compose and Kubernetes/Helm deployments.”
“- Easier deployment and maintenance.”
“My initial recommendation would be to run a proof of concept with Langfuse and Opik, and compare them against Phoenix if OpenTelemetry compatibility is particularly important.”
“Best for OpenTelemetry tracing”
“Best when you want trace-level debugging and evaluation without adopting a large platform.”
“License: Elastic License 2.0 (source-available, not OSI-approved open source).”
“My initial recommendation would be to run a proof of concept with Langfuse and Opik, and compare them against Phoenix if OpenTelemetry compatibility is particularly important.”
“Best Apache 2.0 full-stack alternative”
“Best when you want tracing and systematic evaluation in one platform, with a permissive open-source license.”
“Apache 2.0 full-stack platform | Opik OpenTelemetry-first architecture | OpenLIT”
“Best OTel-native integrated stack”
“Best if you want observability, evaluation, and prompt management together, with an OpenTelemetry-first architecture.”
“Existing MLflow infrastructure | MLflow”
“Best if you already use MLflow or want a more general-purpose ML experimentation platform.”
“Promptfoo | Prompt testing, regression tests, red teaming”
“Promptfoo | Prompt testing, regression tests, red teaming”
“Maximum infrastructure flexibility | OpenTelemetry + Grafana”
“- Vendor-independent instrumentation.”
“OpenTelemetry | Standardized telemetry collection and export”
“Maximum infrastructure flexibility | OpenTelemetry + Grafana”
“Grafana | Dashboards and metrics”
“Prometheus | Metrics collection and alerting”
“Prometheus | Metrics collection and alerting”
“Tempo | Distributed tracing backend”
“Tempo | Distributed tracing backend”
“there are several good alternatives to managed platforms such as LangSmith, Langfuse Cloud, Helicone Cloud, and Arize Phoenix Cloud.”
“there are several good alternatives to managed platforms such as LangSmith, Langfuse Cloud, Helicone Cloud, and Arize Phoenix Cloud.”
“OpenLLMetry | LLM-specific instrumentation”
“OpenLLMetry | LLM-specific instrumentation”
“DeepEval | LLM testing and evaluation framework”
“DeepEval | LLM testing and evaluation framework”
“Ragas | RAG-specific evaluation metrics”
“Ragas | RAG-specific evaluation metrics”