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08.28.2025
Key Features:
  • Datasets: Create and manage datasets for experimentation.
  • Experiments: Run experiments and evaluate model performance.
  • Prompts: Manage prompt templates and their versions.
  • Spans: Access and analyze traces and spans.
  • Annotations: Add annotations, evaluations, and feedback to spans.
  • Projects: Organize your work with project management tools.
This release provides first-class support for interacting with a Phoenix instance while keeping your environment light and simple.

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Documentation

Phoenix Client Reference — Phoenix Client Reference 1.21.0 documentation

arize-phoenix.readthedocs.io