---
description: 'Evertune is a New York marketing platform for brand discovery in AI search, founded in 2024 by early team members of The Trade Desk. It measures how brands appear across nine AI engines and carries the finding through to content and paid media.'
title: 'Evertune: AI search visibility and advertising platform in New York'
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---

Evertune describes itself as the marketing platform for brand discovery in AI search. The company was founded in 2024 by Brian Stempeck (CEO), Ed Chater (CPO) and Poul Costinsky (CSO), who were early team members of The Trade Desk; its site says they helped build that company from startup to a market capitalisation of more than $50B. Evertune is headquartered in New York City, with further offices in Seattle and Denver, and it reports having raised $20M from adtech and martech investors.

The platform analyses prompts and the answers they receive at scale across ChatGPT, Gemini, Claude, AI Overviews, AI Mode, Perplexity, Copilot, Meta AI and DeepSeek. It is built to carry the finding through to content and media rather than stop at a dashboard, and it comes with its own advertising agents. Evertune states that more than 700 advertisers and agencies use it, and its work is aimed first at advertisers and media agencies.

## What Evertune does

- **Explore**: identifies the questions consumers are asking AI models, drawing on a consumer panel, and clusters those prompts into topics.
- **Measure**: tracks a brand's visibility against its competitors, with what the company calls statistically significant insights.
- **Act**: an Insights & Action Agent that creates content and sets up ChatGPT ads campaigns.
- **Advertise**: an Ads Agent that Evertune presents as "the first AI advertising capability built entirely on GEO data", for reaching buyers inside and outside AI chats.
- **ChatGPT Ad Agent**: a capability the site announces as newly launched.
- **Partner Connect**: affiliate marketing on top sources, in the site's words.

## How the platform works

Evertune describes a loop in four movements: find the questions (Explore), measure where the brand stands (Measure), produce the answer (Act) and buy reach (Advertise). Its measurement rests on two claims the company makes on its site:

- **EverPanel**, a proprietary consumer panel of more than 150 million user prompts, which grounds the questions it tracks in what people actually ask;
- **repeated sampling**: each prompt is sampled up to 100 times per AI model, so that a result reflects the pattern of answers rather than a single reply.

The nine engines covered are ChatGPT, Gemini, Claude, AI Overviews, AI Mode, Perplexity, Copilot, Meta AI and DeepSeek.

## What the company reports

- More than 700 advertisers and agencies on the platform.
- $20M raised.
- A panel of more than 150 million user prompts.
- Coverage in The New York Times, The Wall Street Journal, The Economist, The Information, Axios, Forbes, Reuters, Adweek and Ad Age, as listed on its site.

## Brands it names

The site shows Roku, WPP, Athenahealth, Canada Goose, HexClad, Halo Collar and Absolute Collagen among its customers.

## FAQ

**Who founded Evertune?** Brian Stempeck, Ed Chater and Poul Costinsky founded it in 2024. All three were early team members of The Trade Desk.

**Where is Evertune based?** Its headquarters are in New York City, at 35 East 21st Street, and it also has offices in Seattle and Denver.

**Which AI engines does Evertune track?** ChatGPT, Gemini, Claude, AI Overviews, AI Mode, Perplexity, Copilot, Meta AI and DeepSeek.

**How does Evertune make its measurements reliable?** It samples each prompt up to 100 times per model and draws its prompts from EverPanel, a panel it puts at more than 150 million user prompts.

**How much does Evertune cost?** Pricing is set on request, after a demo.

**Who is Evertune for?** Advertisers and media agencies above all; the company states more than 700 of them on the platform.

## Contact

- Website: [evertune.ai](https://www.evertune.ai/)
- Company overview: [evertune.ai/about-us/company-overview](https://www.evertune.ai/about-us/company-overview)
- Headquarters: 35 East 21st Street, 7E, New York, NY, United States