The short version: OpenAI now recommends a starting maximum bid of $3 to $5 per click for ChatGPT ads. That number is not in Wednesday’s announcement. It sits in OpenAI’s advertiser help documentation, updated within the last day, and it is the first usable answer to what ChatGPT ads cost per click. With it you can finally do the arithmetic: at $4 a click, a job that nets you $200 has to close on 1 click in 50 to break even. A job that nets you $3,600 has to close on 1 in 900.
Those numbers point in opposite directions, and the gap between them decides whether this channel deserves a dollar of your money. One more figure first. New advertisers are being offered $500 in ad credit after spending $500, so a first test runs on about $1,000 of delivery, or roughly 250 clicks. Both figures verified on ads.openai.com and OpenAI’s help center on September 17, 2026.
Wednesday’s headline was about something you cannot have. OpenAI introduced Sponsored Agents, an ad format that opens a labelled conversation with a business-run agent inside ChatGPT, and confirmed it is testing with “select advertisers in the United States.” Wayfair is in. So is Angi, which announced its participation the same day. Neither release mentions price.
What ChatGPT ads cost per click, in OpenAI’s own words
The useful document is not the blog post. It is a help center article called “Ads in ChatGPT: The Basics,” carrying an update stamp about a day old as of this writing. It sets out three billing choices: Views for impressions, Clicks for traffic, and Conversions, which optimises toward a conversion event but still charges for valid clicks rather than for the conversions themselves. Read that last one twice before picking a campaign type. Bids are set per ad group, and the line that matters reads: “For CPC campaigns, we recommend starting with a maximum bid of $3 to $5 USD per click.”
A month ago no such number existed publicly. When we covered what you cannot buy in a ChatGPT ad campaign, OpenAI had published no rate guidance and signing up meant joining a waiting list. Both changed this week. The ads site now says “Start now,” US Shopify merchants can install a ChatGPT Ads app and sync their catalogue, and HubSpot is live as the first CRM partner. International Shopify access begins September 23.
One caveat keeps the arithmetic honest. A maximum bid is a ceiling, not a price. OpenAI describes the auction as relevance-weighted and second-price, so you often pay less than you bid. Every number below is a worst case, which is the right way to test a new channel.
What $4 a click means for a job worth $400
Break-even has one form. Required close rate equals maximum cost per click divided by gross profit per job. At $4:
A service call that bills $400 and leaves $200 after parts and labour needs 4 divided by 200, or 2 percent. One click in fifty has to become paid work.
An installation that bills $12,000 and leaves $3,600 needs 4 divided by 3,600, or 0.11 percent. One click in nine hundred.
Side by side, the usual advice inverts. The high-ticket business has enormous headroom. It can waste 899 clicks out of 900 and still come out level. The small-ticket business runs on a thin margin of error, and 2 percent from a cold conversational placement is not a given.
We do not know your close rate, and neither does anyone else writing about this channel. The formula gives you a threshold to test against, not a promise. Divide your own gross profit into $4 and you have the number your campaign has to beat.
The $500 credit buys about 250 clicks, and that is the catch
Here is where the two figures collide, and it is the least obvious thing in the story.
Spend $500, get $500, and you have about $1,000 of delivery. At $3 a click that is 333 clicks. At $5 it is 200. Call it 250.
For the $200-profit service call, 250 clicks at a break-even 2 percent should produce about five jobs. Thin, but readable. You would learn something.
For the $3,600-profit installation, 250 clicks at 0.11 percent produces 0.28 of a job. You would almost certainly end the credit with zero jobs booked, and zero tells you nothing, because zero is exactly what break-even performance looks like at that volume.
So the business with the most to gain here is the one the free trial cannot measure. If you sell high-ticket work and want a real read, plan to spend well past the promotional credit or accept that you are buying a hunch. That is not a reason to skip it. It is a reason not to mistake an empty first month for a verdict.
A related trap sits in the same documentation. Impressions, clicks and CTR can appear within minutes, but spend reporting lags, and OpenAI warns that “a displayed spend of zero does not necessarily mean no charges have accrued.” Do not use a dashboard zero as your budget alarm.
Who never sees your ad
One rule did not change this week, and it still decides more than your bid does. OpenAI does not show ads to users on Plus, Pro or any Business plan, nor to accounts identified as belonging to under-18s. Selling to homeowners, that barely matters. Selling to other businesses, it is the whole story, since the professionals you want are disproportionately the ones paying for a seat. We worked through that split when Perplexity killed its AI ads and ChatGPT did not.
The part you cannot buy
Which brings us back to Angi. A homeowner describing a failing water heater may now be offered a labelled conversation with an Angi agent, and when the job needs a professional, Angi’s release says they enter “Angi’s service request flow to connect with skilled local pros.”
The contractor at the end of that flow is not the advertiser. Angi is. The plumber cannot buy a Sponsored Agent, because the format is limited to a few tested brands, and will pay for the resulting lead on whatever terms their marketplace agreement already sets. The same shape appeared when Google added Angi, Thumbtack and Zocdoc to Gemini: the assistant reaches the customer through a marketplace profile rather than through your website.
The better news is the half of Wednesday that got almost no coverage. The self-serve door opened the same day the exclusive one was announced. An owner can now open an account, set a budget and buy the same inventory directly, with no agency, no waiting list and no marketplace in between. That is a capability that did not exist last month, and it sits alongside the marketplace rather than replacing it.
Should you open an account today?
Test it if you sell to consumers, your work is high-margin, and you can fund a sample past the credit. Treat $3 to $5 as a starting ceiling and bid at the bottom of it. Watch cost per click rather than spend, because spend reporting lags.
Wait if you sell to other businesses. Your buyer sits behind the ad-free wall, and your budget will discover that slowly and expensively.
Either way the arithmetic outlives the promotion. Gross profit divided into maximum bid is the number, and it is the same calculation whether the channel is ChatGPT, Google, or a marketplace charging per lead. The channel is new. The threshold is not.
Frequently Asked Questions
How much do ChatGPT ads cost per click?
OpenAI recommends starting with a maximum bid of $3 to $5 USD per click for CPC campaigns, according to its advertiser help documentation as of September 17, 2026. That is a maximum bid rather than a fixed price, and because OpenAI runs a relevance-weighted second-price auction, the amount actually charged is often lower. There is no published rate card and no stated minimum spend, so your practical floor is whatever daily budget you set.
Is there a minimum spend to advertise on ChatGPT?
OpenAI has not published a minimum spend for its self-serve Ads Manager. You set your own campaign budget, bid and pacing at setup. At the time of writing the ads site offers new advertisers $500 in credit after they spend $500 of their own, putting roughly $1,000 of delivery behind a first test. Larger advertisers can request sales support instead of using the self-serve tool.
Can a small business use Sponsored Agents in ChatGPT?
Not yet. OpenAI describes Sponsored Agents as a test running with select advertisers in the United States, and the named early participants are large brands including Wayfair and Angi. Ordinary advertisers can buy standard ChatGPT ads through the self-serve Ads Manager, through the ChatGPT Ads app in the Shopify App Store for US merchants, or through the new HubSpot integration, but the conversational agent format is not part of that self-serve offering.
Who actually sees ads in ChatGPT?
Ads are not shown to users on Plus, Pro or any Business plan, or to accounts identified as belonging to users under 18, which leaves the free tier as the reachable audience. This matters most if you sell to other businesses, because professional buyers are more likely to be paying subscribers and will never see your ad. Consumer-facing businesses face much less of this problem, since everyday buyers are well represented on free accounts.
Here is what we are genuinely curious about: if you already buy leads from a marketplace, do you know your cost per booked job well enough to compare it against $4 a click, or is that a number you have never had to calculate?
