Observed Signal · Oct 1, 2026 · Product Update · Source: Digiday · Impact: 4/5 · Sentiment: Negative
OpenAI's Measurement Gaps Keep ChatGPT Ads Budgets at Test Level
Seven months after OpenAI began selling ads in ChatGPT, marketers still struggle with measurement, hindering budget scaling. Agencies report discrepancies in conversions and clicks, with Accuracast seeing zero conversions in OpenAI's reporting despite actual form fills, and 100 reported clicks versus its own 20. Reporting latency of 24-36 hours and lack of demographic or prompt data add to frustrations. Many advertisers avoid enabling conversion tracking due to legal concerns about OpenAI's terms and data use, slowing custom audience adoption. OpenAI's conversions API could help but is underutilized. Advertisers like Accuracast and Jellyfish are cautious, with test budgets ranging from £10,000 to £20,000, while independent agencies note some clients spending under $100,000 monthly on ChatGPT compared to $10 million on Google. Third-party measurement via partners like AppsFlyer and Adjust is seen as crucial. OpenAI declined to comment.
OpenAI's ad platform is a major emerging channel, but measurement gaps are hindering adoption and budget allocation, impacting the broader AdTech ecosystem.
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Key Takeaways & Evidence Grounding
- Accuracast reported zero conversions in OpenAI's platform despite actual form fills, and 100 reported clicks versus its own 20.
- ChatGPT reporting data arrives 24-36 hours late, lacking demographic and prompt data.
- Many advertisers avoid enabling conversion tracking due to legal concerns about OpenAI's terms and data use.
- Advertisers are spending under $100,000 monthly on ChatGPT ads, versus $10 million on Google, due to measurement gaps.
- OpenAI has partnered with mobile measurement partners AppsFlyer and Adjust, but integrations are seen as limited.
Connected Companies & Entities
5 Entities mapped“OpenAI started selling ads in ChatGPT and is facing measurement gaps....”
“OpenAI has signed up mobile measurement partner AppsFlyer....”
“OpenAI has signed up mobile measurement partner Adjust....”
“Jellyfish execs noted no click discrepancies and are testing ChatGPT ads....”
“AdRoll execs said they hadn't seen click discrepancies....”
Ontology Mapping & Concepts
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