Observed Signal · Apr 10, 2026 · Product Launch · Source: AdExchanger · Impact: 4/5 · Sentiment: Neutral
Limits of Reaching Chatbot Shoppers
Advertisers seeking placements inside LLM-driven shopping experiences face major limits today. ChatGPT's ad product remains a narrow pilot with a small number of brand partners and low impression volumes, though participating advertisers report high per-session cart values. By contrast, Google’s AI Overviews (AIOs) already surface ads broadly to Search/Shopping/Performance Max advertisers and cannot be opted out, while Amazon’s Rufus chatbot is reportedly preparing to monetise via sponsored prompts and will enrol existing Sponsored Products/Brands automatically. Marketers can optimise feeds and metadata for LLM ingestion, but there is no general paid mechanism to guarantee visibility in generative-AI responses. Criteo has been named as a third-party ad-tech vendor partner for ChatGPT, and industry players are watching to see which platforms scale agentic ad inventory next.
Major platforms (Google, Amazon, ChatGPT/OpenAI ecosystem) are testing or rolling out ad products within conversational/LLM interfaces; this will affect retail media, attribution, ad spend allocation and measurement across the industry.
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Key Takeaways & Evidence Grounding
- ChatGPT Ads is operating as a limited pilot with a small number of partner advertisers and has produced low overall ad volume but reportedly strong conversion and larger average cart sizes for served ads.
- Google’s AI Overviews (AIOs) surface AI-generated answers atop search results and include ads that are available to all Search, Google Shopping, and Performance Max advertisers and cannot be excluded.
- Amazon’s Rufus chatbot has a pitch deck indicating plans to sell ad placements and that existing/new Sponsored Products and Sponsored Brands campaigns in the U.S. will be automatically eligible for the new agentic ads.
- Advertisers can make metadata and API/product feeds ingestible to LLMs, but there is currently no broad paid mechanism to control or guarantee placement within LLM-generated responses.
- Criteo was named as ChatGPT’s first third-party ad tech vendor partner and demonstrated product-recommendation work with an unnamed LLM at a December 2025 investor event.
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Advertisers' Options for Reaching Chatbot Shoppers
Advertisers currently have limited direct control over appearing inside large language model (LLM) responses. Brands can optimize metadata and API feeds for ingestion, but there is no broad paid mechanism to guarantee placement in chatbot answers. Google is the notable exception: its AI Overviews (AIOs) serve ads at scale and cannot be opted out by Search, Shopping or Performance Max advertisers, though reporting for AIO delivery and conversions is opaque. OpenAI’s ChatGPT Ads is running a small, selective pilot with a handful of brand partners that has produced high cart values but low overall ad volume. Amazon’s Rufus chatbot is reportedly preparing to monetize via sponsored prompts and make existing Sponsored Products/Brands automatically eligible. Criteo has been named a third‑party ad‑tech partner in a ChatGPT pilot. The landscape favors big platform gatekeepers and presents measurement and scale challenges for marketers.
AI Chat Advertising Turns Discovery into Performance
In an interview, Laure Sauteraud describes how advertising inside LLM-driven chat experiences is emerging as a measurable performance channel. Criteo’s integration with OpenAI is not yet active in Germany or the EU but is available in the US, Australia, Canada, New Zealand, the UK, Japan and South Korea. The dominant format is “Prompt Smart Ads,” which adapts creatives and product descriptions to user queries. More than 2,000 brands already advertise in ChatGPT via Criteo, and Criteo reports that over 80% of ad-driven ChatGPT traffic originates from new customers. Sauteraud argues AI chat expands discovery earlier in the customer journey, enables deeper personalization from richer conversational context, and should be measured by standard business KPIs such as sales, ROAS, customer acquisition and incremental revenue.
ChatGPT Ads: Navigating the Future of Conversational Marketing
OpenAI has begun trialing ads within ChatGPT for US users on both the free and Go tiers, signaling a major shift for one of the industry’s most widely used AI products. The move appears in response to financial pressures, given AI operating costs and limited willingness to pay, while competition from Google Gemini accelerates across search, shopping, and personal intelligence. Ads are framed around immediate user intent and contextual relevance, designed to integrate into the conversational flow rather than disrupt it. Industry voices emphasize trust, brand safety, privacy, and transparent measurement as critical success factors, with API-level integrations enabling real-time bidding, session-aware targeting, and dynamic response delivery. While early signals point to careful testing and gradual adoption, many see AI advertising as a long-term evolution requiring new infrastructure and governance to balance usefulness with user experience.
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