​

Complete Multi-Step Workflows with PXI

• Work across the UI in fewer turns — PXI can read page state, make decisions, and perform several actions as one workflow.
• Stay in control of GraphQL changes — in manual edit-permission mode, Phoenix shows each proposed mutation with Accept and Reject controls before applying it. Approval requests remain available after a page reload.
• Navigate with approval — PXI asks before moving to another page and stops if you reject the request.
• Query Phoenix data directly — PXI can use Phoenix’s read-only REST and analytics SQL tools without a network round trip or separate MCP configuration.
• Recover from unavailable actions — when an action is not available on the current page, PXI receives guidance about where it can run.

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Evaluate Retrieval Relevance Across Any Source

from phoenix.evals import LLM
from phoenix.evals.metrics import RetrievalRelevanceEvaluator

llm = LLM(provider="openai", model="gpt-4o")
evaluator = RetrievalRelevanceEvaluator(llm=llm)

scores = evaluator.evaluate(
    {
        "input": "What is the return policy?",
        "context": "Customers can return purchases within 30 days.",
    }
)
print(scores[0])

import { openai } from "@ai-sdk/openai";
import { createRetrievalRelevanceEvaluator } from "@arizeai/phoenix-evals";

const evaluator = createRetrievalRelevanceEvaluator({
  model: openai("gpt-4o"),
});

const result = await evaluator.evaluate({
  input: "What is the return policy?",
  context: "Customers can return purchases within 30 days.",
});
console.log(result.label);

​

Build Focused Trace Views Faster

• Write trace filters in plain English — toggle AI query in the trace filter field, describe the traces you want, and press Enter to generate a validated filter expression. Press Escape to restore the previous expression.
• Zoom into a chart interval with one click — click a project metric chart bin to apply its exact time range to the page, or drag across the chart to select a wider interval.
• Compare annotations in dedicated columns — show, hide, and reorder individual annotation columns on the spans, traces, and sessions tables. Hover for details or add a matching filter from the cell popover.

​

Manage Retention and Model Providers over REST

• PATCH /v1/projects/{project_identifier}/retention — assign an existing trace retention policy to a project or reset the project to the default policy. This admin-only endpoint changes the assignment; it does not create or modify policies.
• GET /v1/model_providers — list the built-in provider families enabled for the deployment.
• GET /v1/custom_model_providers — list user-defined providers with cursor pagination. Phoenix never returns encrypted provider credentials.

curl -X PATCH "$PHOENIX_ENDPOINT/v1/projects/my-project/retention" \
  -H "Authorization: Bearer $PHOENIX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"policy_id": "UHJvamVjdFRyYWNlUmV0ZW50aW9uUG9saWN5OjI="}'

curl "$PHOENIX_ENDPOINT/v1/model_providers" \
  -H "Authorization: Bearer $PHOENIX_API_KEY"

​

Additional Improvements

• Use native scrollbars — enable your browser and operating system’s scrollbar style from Profile → Accessibility.
• Get clearer not-found pages — missing resources and unmatched URLs now show a useful 404 page instead of a blank page or generic error.
• Submit login forms with Enter without navigating to the forgot-password page.
• Read long filters and share tooltips more easily without content overflowing clipped layouts.
• Track current model costs with refreshed built-in token prices and preserved prompt-cache usage from the OpenAI-compatible /v1/chat/completions proxy.
• Use Anthropic SDK v1 with Phoenix Evals by upgrading anthropic alongside arize-phoenix-evals 3.5.1+.