IAS and DoubleVerify have both signed on to support advertising in ChatGPT, according to Advanced Television. The move brings the two dominant third-party ad-verification vendors into OpenAI's emerging ad business.

What changed?

OpenAI has been building advertising in ChatGPT alongside its subscription and API revenue. Adding IAS and DoubleVerify to the stack addresses one of the first questions any major advertiser asks about a new inventory source: can we measure it?

What "verification" actually does

Brand-safety verification, in the IAS and DV model, runs as a tag inside the ad creative or as a pre-bid signal in the supply chain. The tag reports back to the buyer whether the impression was viewable, whether the surrounding content passed a list of brand-safety categories, and whether the traffic showed fraud patterns.

Major advertiser contracts typically require a minimum percentage of impressions to pass verification before the campaign bills out. The industry rule of thumb sits around 70 percent.

The same machinery that runs on a YouTube pre-roll or a programmatic display placement will, presumably, now run on a ChatGPT response containing an ad unit. That is a meaningful step for OpenAI's pitch to large brand-direct advertisers.

Why IAS and DV matter

IAS and DoubleVerify together cover the bulk of brand-safety and ad-fraud measurement for Fortune 500 advertisers and the major agency holding companies. Their tags run across most display, video, connected-TV, and social environments.

When both vendors show up on a new surface, agency compliance teams can clear that surface through existing verification workflows, rather than negotiating custom brand-safety exceptions.

That procedural step carries more weight than any single feature announcement. Without verification coverage, many large advertisers cannot buy a new inventory source at all, regardless of audience size.

What the report actually said

The Advanced Television item is short on operational detail. It confirms the participation of both vendors but does not publish a launch date, a price schedule, named contacts, or direct quotes from any of the three companies.

Mart Signal has requested comment from IAS, DoubleVerify, and OpenAI and will update this story when those responses arrive.

Buyers in the meantime are left to read between the lines. The phrasing — "support" rather than "integrate" or "launch" — suggests the work is in progress rather than live. Major agency verification sign-offs usually require 60 to 90 days of testing on a new inventory source before the vendors publish a formal certification.

What buyers will watch next

Three variables will decide how much spend actually flows into ChatGPT Ads after this announcement:

• Scale. Can OpenAI show buyers a reach figure large enough to justify dedicated planning?
• Cost. Will CPMs sit closer to search-ad benchmarks or to social-feed benchmarks?
• Format. Will ads appear only inside response text, or extend into sidebars, conversation turns, and the developer API surface?

Verification is a prerequisite, not a guarantee. IAS and DoubleVerify signing on opens the door for media buyers. Whether that door produces meaningful revenue for OpenAI depends on the answers above.