AI Is Pushing Agency Contracts Beyond Billable Hours

WPP said on 6 August that first-half revenue less pass-through costs fell 4.7% like for like, while chief executive Cindy Rose told Digiday the agency group’s move to outcome-based client pay would take years rather than months. Jaguar Land Rover is currently the only client using the model.

The admission matters because WPP has made AI, integration and new commercial models central to its turnaround. It also makes the near-term direction clearer: agency contracts are likely to become hybrids before they become fully outcome-based.

What WPP Said About Agency Pay

Rose said time-and-materials pricing is unlikely to remain sustainable as AI lets agencies complete work faster with fewer people. Yet she also acknowledged the client side is moving slowly. “It’s going to take time for this evolution to take place,” she told Digiday.

The financial backdrop adds urgency. WPP’s first-half revenue less pass-through costs fell to £4.75 billion, while WPP Media declined 5.4% and WPP Creative fell 4.9%. Production grew 1.6%, and APAC returned to 0.3% growth in the second quarter after declining 3.8% across the half.

That mix suggests technology is not simply removing cost. It is changing which work clients will fund and how agencies must defend their contribution.

Fixed-Fee Agency Pricing: Why Agencies Are Ditching Hourly Billing

Forrester study shows 25% of North American agencies have ditched hourly billing for fixed fees. With 63% satisfaction rates and growing client demand, the pricing shift is moving toward Asia Pacific.

Mission MediaLeighton Cosseboom

Why Hours No Longer Explain Agency Value

On WPP’s results call, Rose said AI would create short-term pricing pressure as productivity improves. “Clients are going to expect us to pass those gains on to them,” she said.

That is the weakness in hourly billing. When a faster workflow reduces the recorded effort, the agency can become more efficient and less billable at the same time. But charging only for outcomes creates another problem: agencies do not control product availability, pricing, distribution or every other factor that shapes sales.

Technology costs also complicate the promised saving. Omnicom chief executive John Wren made the point in July: “The marketplace hasn’t seen what the cost of this AI is.” Model access, data, platforms and governance have to be paid for even when human hours fall.

The Market Is Moving Toward Hybrid Contracts

WPP now describes a “mixed economy” of commercial models. That is less dramatic than the death of the billable hour, but more credible. A contract can combine a fixed scope, separately identified technology costs and variable compensation tied to agreed results.

Competitors are testing the same boundary from different positions. Publicis reported 4.8% organic growth and a 17.5% first-half headline margin while continuing to invest in data and AI. India-based LTM introduced an AI-linked model in June that combines fixed and variable pricing with outcome measures, subscriptions and managed services.

The market is therefore not converging on one replacement for hourly fees. It is separating inputs that used to be bundled together. Agencies with clear technology economics and credible measurement may gain pricing power. Those selling undifferentiated hours face greater pressure.

What CMOs Should Put In The Contract

For CMOs and regional procurement leaders, the immediate decision is not whether to demand outcome pricing across every agency relationship. It is which parts of the work can be measured fairly and which risks each party can actually control.

A useful contract should distinguish human expertise, technology and data costs, defined deliverables, and a limited outcome component. It should also specify the baseline, measurement window and treatment of external factors before incentives are attached.

That discipline is particularly important across APAC, where WPP’s second-quarter performance ranged from strong growth in China to continued weakness in Australia and India. A single regional outcome target could hide materially different market conditions.

AI may reduce the hours required to deliver agency work, but it does not make value easier to attribute. CMOs should use the next contract cycle to build pricing around transparent costs and bounded results, rather than replacing one blunt metric with another.