A Google click and a ChatGPT click cost about the same. What happens after the click is where they differ. Here is how the 2 compare.
A US Google search click has a median price of $5.42. OpenAI suggests starting ChatGPT bids at $3 to $5. On the results published so far, Google turns far more of its clicks into leads and sales. ChatGPT reaches people while they are still asking questions, and Google now puts its own ads inside AI answers too.
| Google Ads | ChatGPT | |
|---|---|---|
| Where your ad shows | Search results, Shopping, YouTube, Gmail, Maps, and inside Google's AI Overviews | Below a ChatGPT answer |
| How you target | Keywords and match types, or matching without keywords through AI Max and Performance Max | Context hints that describe your offer. No keywords |
| Price per click (US median) | $5.42 | OpenAI suggests $3 to $5. 15 public campaigns had a median of $4.41 |
| Conversion rate | 8.18% median | No official number. In 4 public tests where one advertiser ran both, ChatGPT converted at 0.21% to 0.9% |
| Cost per lead (US median) | $66.69 | No official number |
| What you pay for | Clicks. Local Services Ads charge per lead | Views or clicks |
| Most it can spend | 2 times your daily budget in a day, and no more than 30.4 times it in a month | 2 times your daily budget in a day, and no more than 7 times it in a week |
| Reporting speed | Clicks every hour, other attribution about 15 hours | Clicks about 15 minutes, spend 7 to 8 hours, conversions 24 to 48 hours |
| Ad review | Most ads within 1 business day | No published time. Business verification can take up to 7 business days |
| Benchmarks | More than 10 years of public studies | None from OpenAI yet |
On Google you choose the searches. You bid on keywords, pick how closely a search must match them, and read a search terms report that shows what people typed, minus terms Google holds back for privacy. Google now pushes broad match with Smart Bidding, and AI Max can match searches with no keyword at all.
On ChatGPT there are no keywords to buy. You write context hints, plain sentences about what you sell, who it helps and when, and OpenAI matches your ad to the conversation. Your reports do not show the questions that triggered your ad. Some advertisers can add Negative Phrases to keep ads away from chats that mention certain words.
WordStream's 2026 study of 13,474 US search campaigns, which mixes Google and Microsoft data, found a median of $5.42 per click, an 8.18% conversion rate and $66.69 per lead. Prices change a lot by industry: $9.87 per click for lawyers, $8.00 for dentists, $4.44 for clothing and jewelry, and $3.22 for real estate.
On ChatGPT, OpenAI suggests starting bids of $3 to $5, and 15 public campaigns billed in dollars had a median of $4.41. The PPC agency PPC ONE collected every published case where one advertiser ran Google and ChatGPT over the same weeks. Google had the higher conversion rate in all 4: 5.3% against 0.46%, 3.71% against 0.21%, 5.95% against 0.9%, and 6.64% against 0.8%. In another public test, one B2B advertiser spent $2,319 on ChatGPT for 739 clicks and no qualified leads, while Google brought 2 qualified leads at a higher price per click.
The better ChatGPT numbers come mostly from OpenAI and its partners. WeightWatchers' cost per sale from ChatGPT ads was 15.3% below its paid search average, measured by DV Rockerbox. Jotform reported a cost per signup about 30% below paid search. One agency founder told The Information that business software clicks cost about $5 on ChatGPT against $30 to $50 on Google. Treat all of these as early, because none of them is an independent test with matched budgets.
If you run Search, Shopping or Performance Max campaigns, your ads can already show above, below or inside Google's AI Overviews. Inside the answer, that covers English searches in 12 countries, including the US, Canada, Australia and India. You cannot switch it off, you cannot target it directly, and Google does not report it separately. In May 2026 Google also announced ads written by Gemini inside AI Mode answers, still in testing. SE Ranking found a text ad on 29.45% of 50,032 US commercial searches in AI Mode.
These AI answers take clicks away from the results under them, paid ads included. Seer Interactive measured the paid click-through rate on searches with an AI Overview falling from 19.70% to 6.34% between June 2024 and September 2025. Pew Research found that people clicked a result on 8% of visits that showed an AI summary, against 15% without one.
On ChatGPT the AI chat is the whole placement. You buy it on purpose, you see it in your reports, and you write ads for it. On Google it comes mixed into your search campaigns.
Both platforms treat your daily budget as an average. Google can spend up to 2 times it on a busy day and no more than 30.4 times it in a month. ChatGPT can spend up to 2 times it in a day and no more than 7 times it in a Sunday to Saturday week. ChatGPT's minimum is $25 a day in US dollars. Neither charges per sale. Google's Local Services Ads for home and storefront services are the exception that charges per lead.
Google is years ahead here. Data-driven attribution is the default, Enhanced Conversions matches more sales with hashed customer data, clicks update every hour, and Target CPA bidding can start with no conversion history. ChatGPT has a pixel, a Conversions API and a Google Analytics 4 connection in beta. Spend shows about 7 to 8 hours late, conversions 24 to 48 hours late, and attribution is last touch.
Google reviews most ads within 1 business day and will eventually require every advertiser to verify. Health and finance ads need extra certification, and Google keeps them out of AI Overviews. ChatGPT's business verification can take up to 7 business days. Health, finance and legal ads are mostly limited to the US, and OpenAI bans several categories everywhere, including payday loans, debt relief and telehealth.
Keep it. Test ChatGPT with a separate budget and a separate set of ads. Graphite checked 10 advertisers and found that only 1.9% of their ChatGPT headlines matched one of their Google headlines exactly, so they write new ads for ChatGPT. Write for a person in the middle of a conversation, keep titles to 24 characters, and send each ad to the page about that one offer. Judge the test on what each lead or sale cost you, and compare it with your Google numbers from the same weeks.
Based on each platform's own help pages and on the studies named below, as we read them on October 20, 2026. Prices and rules change often, so check the current numbers before you spend.
Sources: Google Ads Help (campaign types, AI Max, ads and AI Overviews, keyword matching, search terms report, average daily budgets, Target CPA, data-driven attribution, enhanced conversions, data freshness, ad review, advertiser verification, Local Services Ads). Google blog, Google Marketing Live, May 20, 2026. WordStream by LocaliQ, Google Ads Benchmarks 2026. SE Ranking, ads in Google AI Mode, July 14, 2026. Seer Interactive, AI Overview impact on CTR, November 2025. Pew Research Center, July 22, 2025. PPC ONE, ChatGPT ads results, updated October 14, 2026. Workshop Digital, ChatGPT ads for B2B, August 26, 2026. OpenAI Ads blog, More ways to measure ChatGPT Ads, October 5, 2026. OpenAI customer stories (Jotform, Newegg, LegalNature). The Information, via Shopifreaks, October 15, 2026. Graphite and Similarweb, The State of ChatGPT Ads, September 28, 2026. OpenAI Help Center, ChatGPT Ads collection.
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