medianexis.

Claude, Gemini erode ChatGPT’s share of AI prompt volume

Advanced Television reports that Comscore’s Q2 2026 AI Intelligence Report shows ChatGPT’s share of AI prompt volume fell from 70 percent to 50 percent between January and June 2026.

Why it matters. Brands and publishers courting AI-driven discovery must now optimize for multiple assistants rather than treating ChatGPT as the default gateway.

Signal from advanced-television.com · read the original.

All gas. No brake. Free.

What’s happening, why it matters, who reported it, who followed, and how the story develops. Free with a reader account. Unsubscribe any time.

Continue free →

More from Measurement

All →

CIMM recap: AI agents now negotiating TV ad buys, identity gaps threaten the model

The Measure’s Jason Damata reports that CIMM speakers described AI agents already handling ad buying, planning and negotiating, while bad identity data and exploding creative variants threaten to undermine measurement across TV, streaming and social.

JIC re-certifies iSpot, ComScore and VideoAmp through 2028

The Measure reports that the U.S. Joint Industry Committee re-certified iSpot, ComScore and VideoAmp as national TV currencies through 2028, even as the JIC already turns its attention to a next phase built around outcomes measurement.

Buyers blast Nielsen’s rushed rollout of new TV measurement changes

The Measure’s Jon Lafayette reports that at CIMM’s Summit, buyers from WPP Media, Publicis and Omnicom Media Group said Nielsen’s shift to the Advertising Research Foundation’s DASH universe estimates was implemented too fast this season.