How Preply combines AI and human tutors to personalize learning

Preply, the world's largest online language learning marketplace, connects over 100,000 expert tutors with students in 180+ countries. The company's mission is to make high-quality language education accessible to everyone through personalized one-to-one instruction. Their approach emphasizes the essential human elements of language learning—conversation, confidence, motivation, and cultural understanding.

To enhance this human-centric model, Preply integrated AI, specifically OpenAI's technology, to bolster relationships between tutors and learners, not replace them. This led to the creation of Lesson Insights, an AI-powered experience that transforms each lesson. After every session, OpenAI analyzes transcripts to generate tailored feedback on grammar, vocabulary, and pronunciation. This process provides learners with actionable guidance and frees up tutors from repetitive administrative tasks, allowing both parties to better track progress.

Preply also implemented ChatGPT Enterprise across its organization, leading to a rapid increase in weekly active usage among employees. Lesson Insights became a core part of Preply's customer-facing AI strategy. Feedback is generated minutes before a session ends, allowing tutors and students to review it together. These insights then feed directly into Preply’s self-learning exercise engine, creating personalized homework and transforming each human lesson into structured, compounding practice.

This continuous learning experience extends beyond the single lesson, helping learners build confidence, maintain motivation, and achieve tangible progress. Rather than viewing each session as an isolated event, learners receive ongoing guidance that contributes to fluency. Tutors, like Michelle Garcia Ramos, now benefit from AI as a practical teaching assistant, significantly reducing preparation time for personalized assignments and allowing them to focus more on direct student support.

Beyond customer-facing applications, Preply utilizes OpenAI APIs throughout its organization for various functions, including customer service, internal system connections, and operational process automation. Custom GPTs, such as the Brand Voice GPT, are integrated into daily workflows to ensure consistent content. Additionally, 94% of Preply engineers use Codex and AI coding assistants, accelerating development and allowing them to concentrate on architectural improvements and solving complex customer problems.