System1 Launches Test Your Ad Screen: AI Creative Screening Trained on Millions of Human Emotional Responses

Aug. 25, 2026

System1, The Creative Effectiveness Platform, today launches Test Your Ad Screen, an AI screening tool trained on 18 million human emotional responses. Designed to help marketers quickly screen up to 100 finished long-form creative assets at a time, the tool delivers accurate effectiveness predictions in minutes, giving brands confidence in which assets are worth investing in.

At the heart of Test Your Ad Screen is System1's Test Your Ad Competitive Edge platform - the world's largest database of human emotional norms, comprised of millions of real consumer emotional responses. This is what separates Test Your Ad Screen from generic AI tools. Its predictions are not modelled on synthetic data or assumptions, but on the largest empirical record of how people actually feel about advertising and what those feelings predict for long-term brand growth, sales and profit.

Test Your Ad Screen provides results in low, medium and high ranges across key diagnostics, rather than precise decimal figures. Bands give a directional and honest read, showing where an asset’s commercial impact is likely to land relative to category and emotional norms. These outputs match human testing 9 times out of 10 and the screening tool won't show a result if it lacks confidence in the accuracy of its predictions.

The launch of Test Your Ad Screen completes a two-stage creative effectiveness journey for System1 clients. It first helps brands cast a wide net across their long-form assets, surfacing the strongest options in minutes. This helps marketers decide where to invest media budget and where it may be useful to have in-depth human research featuring exact figures and rich, qualitative insights.

Assets that need further prediction and insight can then be assessed with real consumers using Test Your Ad, which delivers precise diagnostics and qualitative insights. Together, the tools allow brands to screen quickly and broadly, then test on a deeper level with real consumers and custom audiences.

Test Your Ad Screen is accessible via System1's online platform in the US and UK for long-form assets, with additional markets and media channels forthcoming.

Andrew Tindall, Chief Growth Officer, Advertising at System1 said:

“Marketing teams today are faced with delivering an ever-increasing number of creative assets. Test Your Ad Screen helps them make more decisions faster and more regularly, with accurate and predictive data in minutes. This enables brands to understand creative quality and make better informed decisions about where media spend should be allocated.”  

 

James Gregory, CEO at System1, said:

"We believe the future of creative effectiveness lies in combining AI with real human understanding. Test Your Ad Screen is built on millions of real human emotional responses, not synthetic data or assumptions, helping marketers screen creative quickly while staying grounded in how people actually feel. This is not a replacement for human testing, but a complement to it, and an important next step for System1 in bringing AI and human emotion together."