About Liner

Liner is a global AI search engine that delivers precise answers and provides a trustworthy source for each line of its answers. Trusted by over 11 million users, including students and researchers, Liner has been featured three consecutive times on Andreessen Horowitz’s list of top GenAI consumer companies, reinforcing its position as a leader in AI search apps.

The Challenge

Liner is well-known in the market for its premium subscription model. However, Liner wanted to address a critical gap: how to effectively monetize their large base of non-paying users without compromising the quality of their app experience.

Since our initial engagement with Liner in August 2024, we’ve jointly focused on a shared vision: creating a generative ad experience that would unlock meaningful ad revenue while maintaining—and even enhancing—user experience.

Our Solutions

Innovative Custom Ad Formats

Over the past eight months, Koah Labs and Liner have been iteratively developing and testing various ad formats, making continuous adjustments to optimize their performance. Through this experimental process, we've successfully created four entirely new ad formats the world has not seen before, specifically designed for LLM interfaces:

1. Prefix Ads

2. Suffix Ads

3. Sponsored Sources

4. Sponsored Follow-Up Questions

These unique ad formats, though initially tailored for Liner, have been crafted with versatility in mind, enabling easy adoption by other publishers within minutes.

Advanced Publisher Dashboard

Given Liner’s extensive advertising expertise, they had a clear vision of how they wanted to test , analyze and optimize ad performance. This vision guided our product development for the Koah Publisher Dashboard, placing the voice of the customer at the center of our design. From comprehensive visualizations of ad performance metrics to the essential functionalities publishers expect from an advanced ad network, we built a powerful and intuitive experience to fulfill Liner’s needs.

Koah's Impact

As Koah's strategic ad network partner, Liner unlocked a new approach to monetize their free user base while maintaining an ideal balance of growth, user experience, and revenue. With flexible ad formats, a comprehensive analytics dashboard, and diverse advertiser pool, Liner can now:

• Expand into more advanced LLM-driven features while ensuring sustainable unit economics.

• Establish and sustain a meaningful new revenue stream, providing greater flexibility for continued innovation.

Through our ongoing partnership, Liner is actively working to solve one of the toughest challenges in GenAI consumer app monetization. After months of successful collaboration, our results continue to show strong performance as we optimize the balance between user experience, revenue generation, and scale.

Ready to monetize your AI product?

Transform your AI-powered app into a sustainable business with Koah, just as we did with Liner. Email us at support@koahlabs.com for a tailored experience or get started by checking out the easy-to-integrate SDK today.