ChatGPT vs Google AI Overviews vs Copilot vs Perplexity: who has ads?

Updated 2026-06-04

The major AI answer engines have taken sharply different paths on advertising in 2026. Here is where each one stands.

At a glance

ChatGPT

OpenAI launched ads on February 9, 2026 for Free and Go tier users. The format is a labeled “Sponsored” text block placed below the AI’s answer — a 40-character headline, 150-character description, and a link. Targeting uses “context hints” rather than keywords, matched via a relevance model on Microsoft Advertising infrastructure. The self-serve Ads Manager opened to all US advertisers on May 5, 2026 with no minimum spend.

Google AI Overviews

Google has the largest and most mature AI ad integration. AI Overviews — the AI-generated summaries that appear at the top of Google Search results pages — show standard Google Shopping and text ads. As of early 2026, ads appeared in approximately 25.5% of AI Overview responses. These are not novel ad units; they are Google’s existing auction-based ads pulled into the new summary format.

Google announced a new format called “Conversational Discovery” ads at Google Marketing Live 2026, designed specifically for multi-turn AI search interactions. That format is in rollout but not yet at the scale of standard AI Overview ads.

Gemini app

The Gemini standalone app — Google’s direct competitor to ChatGPT — does not yet show ads inside the conversational interface as of early 2026. Google has been cautious about introducing ads into Gemini specifically, even while AI Overview ads scale aggressively in Search. The Conversational Discovery announcement suggests Gemini app ads are coming, but no launch date has been confirmed.

Microsoft Copilot

Microsoft Copilot, the AI assistant built into Microsoft 365 and available at copilot.microsoft.com, shows a “Sponsored” block below its answers — the same format and label as ChatGPT’s ads, and for a structural reason: both run on Microsoft Advertising infrastructure. Copilot ads have been live since 2024 and represent the most established example of the below-answer placement model that OpenAI subsequently adopted.

Perplexity — the ad-free contrarian

Perplexity is the most notable reversal. The company tested ads during 2024 and into 2025, then abandoned its ad program in February 2026 — the same month ChatGPT launched its own. Perplexity has since positioned itself explicitly as an ad-free AI answer engine, using the contrast with ChatGPT as a marketing angle.

The business logic: Perplexity is smaller than both Google and OpenAI, and its subscriber base skews technical. The reputational cost of ads — particularly given the timing with ChatGPT’s launch and the surrounding controversy — may have outweighed near-term revenue. Whether that position holds as the company scales is a separate question.

The pattern

Two distinct approaches have emerged. Google and Microsoft integrated ads early and treated them as extensions of existing ad infrastructure — Google’s auction system, Microsoft Advertising. OpenAI came later and built a standalone ad product. Perplexity bet that ad-free is a durable differentiator. The Gemini app sits in the middle: ads are coming, but the company is moving deliberately.

For advertisers, ChatGPT and Copilot currently offer the clearest path to AI conversation placements at scale. For users who want to avoid ads entirely, Perplexity is the only major AI answer engine that made a public commitment to remain ad-free.