Observed Signal · Jun 24, 2026 · Industry Analysis · Source: Digiday · Impact: 3/5 · Sentiment: Neutral
Agencies Turn to AI Agents, Brands Move In‑House
Agencies are showcasing AI agent pilots, partnerships and products to speed media planning and buying — but face competition from advertisers building their own agentic capabilities. WPP is testing a media‑buying and planning agent for premium video, while Dentsu has partnered with Newton Research to trial media‑buying agents and faster analytics via Dentsu.connect. Independent agencies and consultancies such as Butler/Till and Dept are also deploying agent tooling (including Claude agents and a productised 'Agent Studio') and using Google models to accelerate delivery. Advertisers including Hyundai have built in‑house bidding agents with partners (Chalice and Canvas) using a containerized OpenXBuild solution, reporting a 67% reduction in online video CPM and a 20% decline in cost per defined 'high value action' during pilots. The piece cites WFA research on broad in‑house AI adoption and frames the trend as a strategic threat and opportunity for agencies.
Agentic AI is being trialed across major agencies and advertisers; pilots show material cost and efficiency gains, and brands' ability to in‑house agentic media buying could reshape agency revenue and programmatic trading models.
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Key Takeaways & Evidence Grounding
- WPP is testing a media buying and planning agent for premium video inventory.
- Dentsu partnered with Newton Research to test media‑buying agents and faster media analytics via Dentsu.connect; pilots include transactional buying in the U.S.
- Butler/Till worked with DoubleVerify to develop Claude agents to analyze inventory quality and automate campaign adjustments.
- Hyundai, with Chalice and in‑house agency Canvas, used a containerized OpenXBuild bidding agent on OpenX’s SSP that cut online video CPMs by 67% and reduced cost per 'high value action' by 20% in a pilot.
- Dept launched a consultancy service 'Agent Studio' and used Google’s Gemini and Antigravity suites to build agents for Blackroll, completing an e‑commerce redesign 3.8× faster than estimated without agents.
Connected Companies & Entities
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Related Market Signals & Shifts
Recent verified developments and strategic activity across this market segment.
AI Agents Emerge as Key Holiday Shoppers
At The Advertising Club of New York's Commerce Media Exchange Conference, executives from Wevo, Dentsu, and Mastercard discussed the growing influence of AI agents on commerce and advertising. Nitzan Shaer, CEO of Wevo, cited Adobe data showing that 20% of holiday shopping experiences in 2025 were influenced by AI agents, with conversion rates 40% higher for agent-influenced purchases by March 2026. Jen Bryce of Dentsu highlighted the shift from search bars to agents pre-filtering options and the use of AI agents for continuous media planning and optimization. Nili Klenoff of Mastercard emphasized the importance of brand trust and product data legibility for agents. The panel also covered the use of synthetic audiences for campaign testing, balancing automation with human judgment, and the need for marketers to measure agent-driven traffic separately.
Agentic AI in Advertising: Progress, But Not Transformative Yet
Karsten Weide of W Media Research provides a measured assessment of agentic AI in advertising, arguing the technology's promise outstrips current production reality. Deployments exist—largely in planning, troubleshooting, and optimization—but fully autonomous buying is rare and typically constrained by human-in-the-loop governance, fragmented data, legacy stacks, and trust issues. PubMatic, Viant, and Yahoo are highlighted as leaders/early adopters; Amazon, Google, and Meta run internal agentic capabilities with tight controls. Startups and vendors are experimenting with agent-led planning and optimization, and products like HUMAN Security’s Agentic Trust aim to increase visibility. Near-term adoption is expected to be gradual, favoring semi-autonomous workflows until governance, interoperability, and clear ROI improve.
AI Search Fuels Content Budgets Before Media Buys
Marketers are redirecting marketing dollars toward creators, content, agency services and tools to improve how brands are cited inside large language models and AI-generated answers, rather than immediately buying AI-search ads. WPP has forecast AI search advertising will become the fastest-growing channel, but agencies and brands say measurement, attribution and inventory clarity are still unresolved. Examples include Butterball hiring Carmichael Lynch for AI visibility work and Priceline increasing creator and social spend while piloting ChatGPT ads and testing Google AI Max. Agency leaders quoted in the piece argue many brands are prioritizing organic ‘AI visibility’ (optimizing owned and creator content for LLMs) now, while remaining ready to scale paid AI-search placements once ad formats and metrics mature.
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