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

# December 2025

## Multi-Span Filters

December 18, 2025

Filter traces using multiple span conditions with:

* **AND, OR, NOT** operators for combining conditions
* **Indirectly Calls (->)** and **Directly Calls (=>)** relationship filters
* **Up to 5 filters** to find complex patterns like "spans where A calls B, but not C" or "traces containing both X and Y"
* **Parentheses** to build complex queries and pinpoint the traces that matter

<Frame>
  <img src="https://storage.googleapis.com/arize-phoenix-assets/assets/images/multispan-filters.gif" alt="Multi-Span Filters" />
</Frame>

## Support for Opus & Haiku 4.5

December 15, 2025

Expanded LLM model support to include Opus & Haiku 4.5 models in the playground and online tasks.

## Support for GPT-5.2 and GPT-5.2 Pro

December 12, 2025

Expanded LLM model support to include GPT-5.2 models in the playground and online tasks.

## Improved Playground Views

December 10, 2025

The Prompt Playground page is now **Playgrounds**, where you can use your Playground Views! This change allows you to easily navigate to a configuration of the prompt playground you've saved. A playground view saves a complete snapshot of your current prompt playground session, allowing you to preserve your work, share configurations with teammates, or return to previous experiments. Here's what's saved in a view:

* **LLM Config** (provider, model selection, model params, custom endpoint settings)
* **Prompt Setup** (messages, roles, message content, tool and function calls)
* **Generated Results** (when setup with datasets)
* **Connected Datasource** (dataset or span)

If you want to start a playground from scratch, you can create a view using the **+ Playground** button at the top of the Playgrounds page.

<Frame>
  <img src="https://storage.googleapis.com/arize-phoenix-assets/assets/images/playground-views-improved.gif" alt="Improved Playground Views" />
</Frame>

## Realtime Ingestion for all new Arize AX Spaces

December 5, 2025

Any spaces created on or after 12/5/25 will use realtime ingestion by default! This eliminates the delay between sending traces and seeing them in the platform, giving you instant visibility into your production workloads.