> ## Documentation Index
> Fetch the complete documentation index at: https://polyai-mintlify-41fdf97b.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# 09.2025

> September 2025 release notes.

The **September 2025** PolyAI Agent Studio release focuses on the addition of new Webchat configuration options and individual Test Cases
to complement the previously introduced Test Sets.

Expand the items for details:

<AccordionGroup>
  <Accordion title="Webchat configuration" icon="comments" id="webchat-config">
    Configure, preview, and test non-voice Webchat deployments directly in Studio.

    <img src="https://mintcdn.com/polyai-mintlify-41fdf97b/zM2ljr6mf8caRTms/images/release-notes/2509/webchat.png?fit=max&auto=format&n=zM2ljr6mf8caRTms&q=85&s=04547cdbcca2884c51d123ec9d1b3f4f" alt="webchat-config" width="3000" height="1622" data-path="images/release-notes/2509/webchat.png" />

    **What's new:**

    * There is a new **Webchat** configuration section in the Agent Studio **Settings** tab.
    * You can customize the appearance of the chat widget quickly using the live preview.
    * You can test the widget quickly in-browser with **Preview Demo** or in any site using the embed script tag:

          <img src="https://mintcdn.com/polyai-mintlify-41fdf97b/zM2ljr6mf8caRTms/images/release-notes/2509/script-tag.png?fit=max&auto=format&n=zM2ljr6mf8caRTms&q=85&s=f114c2274fbcc7d853b2569b27f6d602" alt="one-webchat-click" width="1160" height="546" data-path="images/release-notes/2509/script-tag.png" />
  </Accordion>

  <Accordion title="Test cases" icon="vial" id="test-cases">
    The Test Suite now supports individual **Test Cases**.

    <img src="https://mintcdn.com/polyai-mintlify-41fdf97b/zM2ljr6mf8caRTms/images/release-notes/2509/test-case.png?fit=max&auto=format&n=zM2ljr6mf8caRTms&q=85&s=80d064738087e278c2211d5da45d751a" alt="test-cases" width="3002" height="1614" data-path="images/release-notes/2509/test-case.png" />

    **What's new:**

    * You can use a conversation to create a **Test Case** against a single scenario.
    * These are run directly from the **Test Cases tab**, after selecting the agent version (Draft/Sandbox) to test against.
    * Outcomes and last-run timestamps are tracked automatically.
    * Organize cases into **Test Sets** to rerun whole groups at once and view aggregated results with charts.
    * Cases can belong to **multiple sets**, so you can target them by feature or however else is required.
  </Accordion>

  <Accordion title="Home page updates" icon="house" id="home-page-v2">
    The Agent Studio home page now surfaces more trend data and a clearer quality summary.

    <img src="https://mintcdn.com/polyai-mintlify-41fdf97b/zM2ljr6mf8caRTms/images/release-notes/2509/new-homepage.png?fit=max&auto=format&n=zM2ljr6mf8caRTms&q=85&s=1520f3af9284a40649348ade107dcbe0" alt="home-v2" width="2510" height="1450" data-path="images/release-notes/2509/new-homepage.png" />

    **What's new:**

    * **Average PolyScore** added to Quick Insights
    * New charts for **Containment rate** and **PolyScore** over time
    * Consistent "**PolyScore**" naming across tables, filters, and details
  </Accordion>

  <Accordion title="Smart Analyst: reasoning logic and chat history" icon="comments-question" id="smart-analyst-history">
    Smart Analyst now supports structured responses using reasoning logic. A persistent chat history has also been added.

    <img src="https://mintcdn.com/polyai-mintlify-41fdf97b/zM2ljr6mf8caRTms/images/release-notes/2509/smart-analyst-reasoning.png?fit=max&auto=format&n=zM2ljr6mf8caRTms&q=85&s=c85bf84e4ea22582eeaf6907f7ae42fb" alt="smart-analyst-reasoning" width="2510" height="1280" data-path="images/release-notes/2509/smart-analyst-reasoning.png" />

    **What's new:**

    * **Structured responses**: answers now include reasoning logic along with the final answer, as well as more clearly labeled sources and steps.

          <img src="https://mintcdn.com/polyai-mintlify-41fdf97b/zM2ljr6mf8caRTms/images/release-notes/2509/smart-analyst-history.png?fit=max&auto=format&n=zM2ljr6mf8caRTms&q=85&s=89bfd198701ac5c6b5125c626b5838af" alt="smart-analyst-history" width="2502" height="546" data-path="images/release-notes/2509/smart-analyst-history.png" />

    * **Chat history**: resume previous analyses; conversations stored with redacted transcript data

    * **Auto titles** with the ability to rename and delete old analyses from the history list.
  </Accordion>

  <Accordion title="Numbers tab" icon="phone" id="phone-numbers-variants">
    You can now buy and assign phone numbers from the new **Numbers** tab in the Agent Studio UI, and you can optionally link these to individual multi-site **variants**.

    <img src="https://mintcdn.com/polyai-mintlify-41fdf97b/zM2ljr6mf8caRTms/images/release-notes/2509/numbers-tab.png?fit=max&auto=format&n=zM2ljr6mf8caRTms&q=85&s=40790037c962e82d618760df8a3abcb5" alt="phone-numbers" width="2990" height="1490" data-path="images/release-notes/2509/numbers-tab.png" />

    **What's new:**

    * New **Numbers** page under *Configure* shows all numbers by environment
    * Add, view, and delete numbers in Sandbox and Pre-release.
    * Assign numbers to variants for multi-site projects.
  </Accordion>

  <Accordion title="Function logging (conv.log)" icon="file-lines" id="function-logging">
    Functions can now write structured logs [Conversation Review](/analytics/conversations/annotations) and the [Conversations API](/api-reference/conversations) using [`conv.log`](/tools/classes/conv-log).

    **What's new:**

    * Use `conv.log.info`, `conv.log.warning`, and `conv.log.error` inside functions
    * Entries appear in **Conversation Review → Diagnosis** and using the **Conversations API**.
    * Mark entries as **PII** so they are only visible to users with permission.
  </Accordion>

  <Accordion title="Conversations API: tool calls" icon="brackets-curly" id="conversations-api-tool-calls">
    Third-party QA tools and automated test suites can now read **tool/function call events** from the Conversations API.

    **What's new:**

    * Every function call made during a conversation is now surfaced in the API response
    * Makes it possible to verify not just the dialogue, but also the actions taken behind the scenes
    * Access is scoped per environment (Sandbox, Pre-release, Live) so external tools don't touch production data
  </Accordion>
</AccordionGroup>