Custom audiences for OpenAI Ads
Spend where it pays. Match the customers you already have and reach the prospects who look just like them, each with a bid adjustment you control, all on OpenAI Ads.
14-day trial · no card required · your data is only used to build your audiences
Now available over MCP: build these audiences with Claude or ChatGPT →
What are custom audiences?
Custom audiences are groups you define, rather than broad demographic buckets. On OpenAI Ads they come in two flavors: people you already know, and people who look like them. The first is Customer Match, built from your own CRM list. The second is prospecting, built from look-alikes of your best customers and in-market segments researching your category.
The point of a custom audience is control. Instead of one bid for everyone, you set a bid adjustment per audience, so your budget leans toward the people most likely to convert and pulls back everywhere else.
Pick the audiences that fit your goal
People you already know
Upload your customer list, match it to OpenAI Ads, and bid more for high-value buyers and existing customers. Privacy-safe: your list is only used to build the audience.
OpenAI Customer Match audiences →People who look like them
Expand to look-alikes of your best customers and in-market segments, each with its own bid adjustment so you scale without wasting spend.
OpenAI prospect audiences →Build audiences from the tools you already use
Your customers, subscribers, and leads already live in your store, billing, CRM, or email tool. Connect one and turn it into audiences you can target or hold out.
Stripe, Shopify, HubSpot, Klaviyo and more
Pull customers, subscriptions, order history, and pipeline straight from the tools you run, each as a target or suppression audience.
Browse integrations →Or upload a CSV
No connector yet? Drop in a list of emails or phone numbers and Bluegrass matches it to OpenAI Ads for you.
See Customer Match →Start with what you want to happen
Pick the outcome you are after and we will show you which audiences to build and which tools feed them.
Suppress existing customers
Stop paying to reach people who already bought. Hold your customers out of prospecting so the budget goes to new demand.
See the play →Win back lapsed customers
Bring back buyers and subscribers who have gone quiet with a measured bid increase.
See the play →Reward your VIP customers
Bid more for your top spenders and find more people who look like them.
See the play →Recover abandoned carts
Re-engage shoppers who left a checkout while their intent is still fresh.
See the play →Target accounts (ABM)
Increase your bids on named target accounts and the people who work at them.
See the play →Nurture and convert leads
Reach MQLs and high-score leads by stage, and hold out the deals you already won.
See the play →One bid adjustment per audience
A simple stack: bid hardest for proven buyers, lean into close look-alikes, and hold broader segments at baseline.
Targeted spend, not spray and pray
Higher match rates
Careful normalization and matching gets more of your list reachable, so your best customers actually see your ads on OpenAI Ads.
Profitable scale
Look-alikes grow reach beyond your list while staying close to what already works, with bids tuned per tier.
Privacy by default
Your data is only used to build your audiences, and it is never sold. You reach the right people without losing control of your list.
From your data to a targeted, bid-tuned audience
Connect or upload
Connect a tool like Stripe, Shopify, or HubSpot, or upload a CSV, and Bluegrass matches it to OpenAI Ads in minutes.
Expand to prospects
Build look-alikes from your matched customers and add in-market segments for your category.
Set bids and launch
Give each audience its own bid adjustment, then layer day parting on top and go live.
Then weight those bids by the hour
Custom audiences decide who you bid on. Day parting decides when. Run them together to spend where it pays, at the moments it pays.
OpenAI Ads day parting
Schedule bid adjustments by hour and day of week so your audiences get more budget during the windows that convert.
Explore day parting →Start with your customers
The highest-intent audience you have is the one that already bought. Match it first, then expand.
See Customer Match →Custom audience questions, answered
What are custom audiences on OpenAI Ads?
Custom audiences are targeted groups you define rather than broad demographics. On OpenAI Ads that includes Customer Match (your own CRM list) and prospecting audiences such as look-alikes and in-market segments. Each can carry its own bid adjustment.
Is uploading my customer list safe?
Yes. Bluegrass only uses your list to build and update your audiences. It is never sold or used for anything else, and you stay in control: you can disconnect or remove your data any time.
What is the difference between Customer Match and prospecting?
Customer Match targets people you already know. Prospecting reaches new people who resemble your customers or who are actively researching your category. Most advertisers run both, with a higher bid on customers.
Can I set different bids per audience?
Yes. Every audience gets its own bid adjustment, so you can lean in on high-value buyers and ease off on broader segments, then layer day parting on top.
Reach the right people on OpenAI Ads
Match your customers, build look-alikes, and set bids per audience in one console.