AI Observability & Evaluation
Arize Phoenix
Arize Phoenix is an open-source AI observability platform for tracing, evaluation, prompt iteration, datasets and experiments.
Self-hosted open-source option plus Phoenix Cloud/Arize pricing; exact numeric plan prices not captured.approx.
AI Observability & Evaluation
Langfuse
Langfuse is an open-source LLM observability and evaluation platform for traces, prompt management, metrics, datasets, and evaluations.
Cloud and self-hosted pricing available; pricing is based on billable/ingested units, with free account access available.approx.
AI Observability & Evaluation
Weights & Biases Weave
Weights & Biases Weave is a GenAI observability and evaluation product for LLM applications.
Weights & Biases pricing includes Weave seats and related products; verify plan amounts before numeric claims.approx.
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