Duolingo Emerges as Leading Customer of OpenAI Based on Token Consumption

In an unexpected turn of events, Duolingo has been identified as one of the leading users of tokens from OpenAI’s various models, as suggested by a recent post on X (formerly Twitter).This information has not yet been officially confirmed by OpenAI but has sparked significant interest and speculation.

Duolingo Leads List of OpenAI Token Consumers

OpenAI just shared the Top30 customers who’ve used 1T+ tokens.pic.twitter.com/zXHeOyIiVq

— Itamar Golan 🤓 (@ItakGol) October 7, 2025

This claim originated from Itamar Golan, CEO and co-founder of Prompt Security, who circulated this list of the top 30 OpenAI customers known to have consumed over 1 trillion tokens through an X post. Subsequent discussion ensued on the OpenAI Developer Community forum, leading to broader visibility and traction.

While the authenticity of the list remains unverified, Golan’s established background lends credibility to his claims. Notably, other prominent companies on the list include Salesforce, Shopify, T-Mobile, and Perplexity.

Duolingo’s Commitment to Artificial Intelligence

Recent reports underscore Duolingo’s success as the world’s highest downloaded education app in 2024, boasting a strong user engagement with approximately 34.2 million Daily Active Users (DAUs) and 9.5 million premium subscribers as of the fourth quarter of 2024. This translates to a conversion rate where more than 25% of DAUs opt for the paid premium service—a striking contrast to other platforms such as Elon Musk’s X, which reported only 1.4 million premium users, representing less than 1% of its total user base.

Given its heavy investment in AI technology, it’s no surprise that Duolingo ranks among OpenAI’s prime customers. The application extensively utilizes AI to provide personalized learning experiences, adapting lessons and offering real-time feedback based on user performance.

How Duolingo Harnesses AI

Duolingo’s innovative approach integrates AI in several key areas:

The proprietary AI engine, known as “Birdbrain, ”customizes lessons according to individual performance metrics.
AI facilitates spaced repetition, reinforcing weak concepts to enhance retention.
Large Language Models (LLMs) expedite the development of new content, keeping learning materials fresh and relevant.
Premium subscribers benefit from an AI-driven feedback system offering comprehensive answers and explanations.
AI is also employed in role-play settings and through Duolingo’s virtual tutor, Lily, enhancing the interactive learning experience.

For more information on Duolingo’s AI applications, explore the details that reveal how this education platform is redefining language learning.Source & Images