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Arize AI Release notes and new features

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Arize AI releases

November 2026 digest

2 releases

phoenix

arize-phoenix

19.14.0 (2026-08-03) Features evals: add hallucination evaluator (1aa1a84) Bug Fixes traces: render ReasoningPart in gen_ai message flattening (05d5999), closes #14962

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Ships phoenix as open source on GitHub.

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