Data and AI releases

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arize-phoenix: v19.8.0

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19.8.0 (2026-07-27) Features agent: add Claude Opus 5 to the curated model list (381dcb1) playground: register Claude Opus 5 (7f65b94) Bug Fixes cost: update built-in model token prices (c269af8) deps: exclude broken bashkit 0.14.2 to unbreak 3.14 installs (ba2c10d) focus styles (0ba4c4b) server: fall back to text for invalid span mime types (a6f91d5)...

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Also shipped Jul 27, 2026Arize AI in July 2026 →

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arize-phoenix: v19.7.0

19.7.0 (2026-07-27) Features add span detail downloads (a61a86c) dsl: add parent_span is None root-span predicate to span filter DSL (89e54b5) dsl: analyze root-span scope, stop applying it twice (aa9254e) pytest: evaluator trace isolation and experiment metadata for the pytest plugin (d81ee21) ui: add SegmentedControl component (649b061) ui...

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arize-phoenix: v19.9.0

19.9.0 (2026-07-28) Features charts: keep chart panels readable at narrow widths (1af5b91) trace: expand or collapse all span info sections at once (632e2c4) Bug Fixes clarify empty span annotation tool input (2931734) preserve floating agent location on new chat. (6d87936) server: isolate MCP code-mode execution in subprocesses (ed25b59)

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arize-phoenix: v19.10.0

19.10.0 (2026-07-28) Features add experiment evaluation metrics charts (661cf9e) breakdown token charts by sub-type (4e161f7) charts: reorder selected charts by dragging in the chart menu (3599c77), closes #14793 experiments: collapse experiment table rows to a single line (e0c97cd) sandbox: add Monty provider with shared runtime (342b229) show cost and...

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arize-phoenix: v19.11.0

19.11.0 (2026-07-30) Features add project evaluation metrics charts (7ef4832) evals: count subagent tool calls online (819c09b) project: defer metric chart loading and lift the chart selection cap (b455a3f) sandboxes: use Pydantic logo for Monty provider icon (73abdaf) show tool and tool call counts in LLM span card headers (0be0c11), closes #14712 trace...

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arize-phoenix: v19.6.0

19.6.0 (2026-07-24) Features client: add span_ids filter to get_spans in python and typescript clients (df7057a) ui: download selected spans or traces as OTLP JSON (4b4ad21) Bug Fixes deps: update arize-phoenix-evals to 3.3.0 (181adc8) ui: consistent span-detail input/output cards + session view polish (33c94e6) ui: extend session annotation panel to full...

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arize-phoenix: v19.5.0

19.5.0 (2026-07-23) Features add evaluation metrics aggregation APIs (ad41a4d) agents: online trace evals with tool_count_per_turn and user_friction (bdff4b5) api: expose dataset example source span (e0cf022) evals: add toxicity gallery template with input/output-agnostic benchmark (1082155) playground: add Gemini 3.6 Flash and 3.5 Flash-lite support...

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arize-phoenix: v19.12.0

19.12.0 (2026-07-31) Features evals: harbor poc (24ff59b) Bug Fixes dsl: one NUL message on every Python (1717c4c) Documentation Add Phoenix release notes , 2026-07-29 (ae690e1)

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