Data and AI releases

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arize-phoenix: v19.18.0

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19.18.0 (2026-08-05) Features add REST endpoint for prompt metadata updates (244ef9c) sessions: expression filter DSL (64f505b) Bug Fixes cost-tracking: sync LiteLLM above_NNNk_tokens tier rates as threshold_based customizations (e80d01a) ui: size time-range control buttons explicitly so Safari renders them uniformly (1169f00)

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Also shipped Aug 5, 2026Arize AI in August 2026 →

REPLACE USING flows for pipelines (Beta)

REPLACE USING flows are now available in Lakeflow pipelines in Beta . Use a REPLACE USING flow when your source is a series of partial snapshots keyed by column. On each update, the flow replaces all rows that match the specified key columns and leaves all other rows unchanged.

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arize-phoenix: v19.17.0

19.17.0 (2026-08-04) Features ui: AI Query for filter fields (920d062) Bug Fixes cli: make px setup's trace verdict the run's result (253cfcf), closes #14876 move span and trace link formatting into the PXI system prompt (8a749ba)

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arize-phoenix: v19.16.0

19.16.0 (2026-08-04) Features server: OpenAI-compatible v1/chat/completions proxy with server-side credentials (6ab57db) ui: preview card contents while collapsed (98b82ba) Bug Fixes render exception stack traces in events (5ca716e) ui: carry the time range forward from the project list into project details (d9421a4) Performance Improvements ui: parallelize...

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arize-phoenix: v19.19.0

19.19.0 (2026-08-06) Features ui: collapse all but the last message in LLM spans (11f418f) Bug Fixes db: replace sqlean.py with arize-phoenix-sqlean (0fc6f0a) Documentation remove Arize AX from tutorial and get-started flows (e75fec0) update API reference to include chat completions (3af38bd)

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arize-phoenix: v19.15.0

19.15.0 (2026-08-03) Features project: defer annotation metric chart loading (8e81af0) project: fetch annotation metric charts independently (8c49a9d)

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arize-phoenix: v19.14.0

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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arize-phoenix-otel: v0.17.0

0.17.0 (2026-08-08) Features phoenix env file (c0ab6a9) Bug Fixes phoenix-otel: correct README logo variants and UTM campaign (f0077ac) phoenix-otel: only remove the default processor when replacing it (997df77) Documentation fill small feature-gap docs across evals, tracing, playground, and packages (e5764b3) otel: document arize-phoenix-otel/server...

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