Introducing the New Arize Phoenix Open Source LLM Evals Library @arizeai
Introducing the New Arize Phoenix Open Source LLM Evals Library  @arizeai
Uploaded September 2025 | Updated September 2026, 2 weeks ago
The Arize Phoenix team is excited to introduce the new arize-phoenix-evals—brand new Python and Typescript SDKs built from the ground up to make evaluating your AI systems faster, easier, and more powerful. Unlike anything else on the market, it unlocks evaluation workflows that were previously impossible. In this virtual session, you meet the creators, see the library in action, and discover how to put it to work in your projects.

📓 Notebook covered in the demo: github.com/Arize-ai/phoenix/blob/main/tutorials/evals/evals-2/evals_2.0_rag_demo.ipynb
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Introducing the New Arize Phoenix Open Source LLM Evals Library

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