ChatGPT Ads gets Target CPA and CPC

What a target is, and what it isn't

Max Bid and Max CPC are ceilings. The page calls them "legacy bid controls rather than average outcome-cost targets": Max Bid sets an auction-bid ceiling, and Max CPC sets a maximum click bid.

A target works the other way. With Target CPC, the system can "bid above or below your target in individual auctions, aiming to deliver as many clicks as possible from your budget while working toward your desired average CPC." Target CPA uses your target and available conversion signals to adjust bids and delivery, aiming to get as many conversions as possible from your budget while working toward your desired average CPA.

The page is blunt about what that means for cost: "Target CPA and Target CPC are average-cost goals. Actual average costs can be higher or lower, and individual results can cost different amounts." Its example is a $50 Target CPA, where some conversions may cost more and others less.

The pricing rule is the same for every strategy: "The final winning auction bid sets the price you pay," including the old ones.

The third option gets a new name

Intelligent bidding is the new name for Maximize Results (Autobid). It adjusts bids and delivery toward your outcome within your budget, with no target, for when you don't want to name an average CPA or CPC.

The dates

• November 9, 2026: Target CPA replaces Max Bid for new conversion campaigns that want a specific cost per conversion, Target CPC becomes available for new click campaigns, and you can begin moving existing campaigns to the new options in Ads Manager.
• November 18, 2026: for API campaigns, OpenAI recommends the new Target CPA and Target CPC fields. The old Max Bid and Max CPC fields stay supported through December 31, but using them to create a campaign or change an ad group's bid type selects Target CPA or Target CPC, and the values you send count as average-cost targets, not maximum bids.
• January 1, 2027: Max Bid and Max CPC retire for existing campaigns. Target CPA replaces Max Bid in conversion campaigns and Target CPC replaces Max CPC in click campaigns. The API fields are deprecated the same day.

Two details worth knowing

Target CPA doesn't change billing. "Your bidding goal and billing event are separate settings," so a conversion campaign can still be charged per click or per impression.

Tight targets can underspend. The page says a campaign "may not spend its full budget if targets are too restrictive, eligible opportunities are limited, or conversion signals are weak or missing." Where an audience bid multiplier is available, it works alongside the target: a $50 Target CPA with a 1.2× new-customer multiplier gives that segment a $60 target.

What I'd do this week

Not from OpenAI, just how I'd start.

1. Make the list. Note every conversion campaign on Max Bid and every click campaign on Max CPC. That's what has to move by January 1.
2. Don't copy the old number across. A max bid is a ceiling and a target is an average, so the bid you set before isn't a good target. Start from the actual CPA or CPC the campaign has been getting.
3. Move one campaign first. Pick one with steady conversion volume, switch it after November 9, and watch spend and average cost for a couple of weeks before you move the rest.
4. Ask your tools. If a third-party tool or script manages your ChatGPT Ads bids through the API, ask when it switches to the new fields, because from November 18, creating a campaign or changing a bid type through the old fields selects a target instead of a cap.
5. Fix tracking before you set a CPA. If the pixel or Conversions API isn't sending the event your campaign optimizes for, a Target CPA campaign has nothing to aim at.