Draft:Evertune AI

Evertune was founded in April 2024 by Brian Stempeck, Poul Costinsky, and Ed Chater, all former executives at the advertising technology company The Trade Desk.^[5][6] Stempeck was The Trade Desk's first chief strategy officer and sat on its board of directors before departing in 2020.^[7] Costinsky and Chater had worked at Adbrain, a cross-device identity company that The Trade Desk acquired in 2017.^[5]

The company emerged from stealth mode in November 2024 with $4 million in seed funding led by Eniac Ventures, with additional participation from NextView Ventures and several former Trade Desk executives.^[8][9][5] It raised a further $15 million in a Series A round in August 2025, led by Felicis Ventures, bringing total funding to $19 million. ^[10][11][3] Angel investors in the Series A included individuals from OpenAI, Meta Platforms, and Uber.^[6][12]

In December 2025, impact.com, a partnership marketing platform, made a strategic investment and announced a partnership to provide content partnerships based on AI search data.^[13][14]

Evertune's core product runs variations of consumer queries thousands of times across multiple AI models, then measures how often a given brand is recommended or cited.^[5] The same query asked 1,000 times may produce different results each time, so the company relies on statistical analysis across large volumes of responses.^[5] The company says it processes over one million AI responses per brand per month.^[15][16]

Reported clients include Canada Goose, Miro, and WPP's Choreograph division;^[11] the New York Times reported that the company had more than 200 clients as of early 2026, concentrated in health care, pharmaceuticals, automotive, luxury goods, and electronics.^[3]

In February 2026, Evertune expanded into programmatic advertising through partnerships with Index Exchange and The Trade Desk, allowing marketers to buy ad placements on web pages frequently cited by AI chatbots.^[17][18] Evertune says about 12% of chatbot users click through to the sources cited in AI responses, creating an advertising opportunity on those pages.^[18] Adweek noted, however, that the product currently relies on prompts rather than tracking real users, making it closer to a contextual buy than true audience retargeting.^[18]

Evertune operates in the emerging GEO market. Venture capital firm Andreessen Horowitz estimated that the category could disrupt the $80 billion SEO industry as consumers shift from traditional search engines to LLM-based interfaces, though the firm cautioned that the market remains experimental and the rules keep changing as AI providers update how their models cite cources.^[4]

The company has drawn coverage from outlets including the Wall Street Journal, Reuters, the New York Times, Forbes, AdExchanger, and Adweek, typically in the context of broader reporting on how the marketing industry is adapting to AI search.^{[1][2][3][6][17][18]} Adweek characterized the emergence of tools like Evertune's as evidence that familiar digital advertising patterns are being reproduced in the chatbot era, calling the developments incremental rather than transformative.^[18] Venture Capital firm Andreessen Horowitz called GEO a "new paradigm" and acknowledged the category's durability is uncertain, since AI models can change their citation practices at any time.^[4]