Introducing Channel-Level Reporting for Performance Max campaigns

Following yesterday's launch of Google Ads API v23, we are excited to share more details about one of the most highly requested features: Channel-level reporting for Performance Max campaigns.

This update provides developers and advertisers with unprecedented transparency into where their Performance Max ads are serving, allowing for deeper optimization and more granular performance insights.

Greater transparency with channel breakdowns

Starting with v23, you can now retrieve performance data broken down by channel—such as Google Search, Search Partners, GMail, YouTube, Display, Discover, and Maps. This functionality is available at the campaign, asset group and asset level, allowing you to see how specific creative assets are performing across different environments.

In previous versions of the API, using the ad_network_type segment for Performance Max campaigns typically returned a MIXED enum value. With the release of v23, the API will now return the specific channel breakdowns.

Note for developers: This is a significant change in behavior. When you upgrade your queries to v23, you will begin to see more detailed results than in previous versions. Please ensure your reporting systems are prepared to handle these specific enum values instead of the generic MIXED result.

Additional segments to consider

While the channel breakdown is new to v23, it works in tandem with powerful segmentation fields introduced in v22: ad_using_product_data and ad_using_video.

• ad_using_product_data: Use this segment to distinguish performance between ads that utilize your Merchant Center product feed versus those that do not.
• ad_using_video: This segment allows you to isolate performance data for ad impressions that included a video component.

By combining these segments with the new v23 channel reporting, you can now gain highly specific insights, such as understanding the conversion value of video-based ads specifically on the YouTube channel versus the Display Network. Or if you’re a retailer, use the ad_using_product_data segment to see data for Shopping ads for Search, Dynamic Remarketing ads for Display and video ads that showcase your products on YouTube.

Implementation details

To get started with these new reporting capabilities, you should update your client libraries to v23. You can find detailed technical documentation and example queries in our PMax reporting guides.

Important notes:

• Performance reports will only return channel-level data for dates on or after June 1, 2025.
• While channel reporting is available at the campaign, asset group, and asset levels via the API, reporting at the asset group level is exclusive to the API and will not be available in the Google Ads web interface.

If you have any questions or want to discuss this post, please reach out to Google Ads API support or start a discussion on our “Google Advertising and Measurement Community” Discord server.

 - Sarah Pollack, Google Ads API Team