
The integration, revealed at the company's annual if(Kakao)25 conference in Yongin, will launch in October and represents the first direct collaboration of its kind worldwide. Users will be able to access OpenAI's latest GPT-5 model seamlessly within KakaoTalk without downloading a separate application, enabling AI-powered conversations alongside everyday messaging.
"This magnitude of change is unprecedented in KakaoTalk's history," said Kakao CEO Chung Shin-a. "We are demonstrating our commitment to respond swiftly to user demands while embracing the transformative power of AI."
The move underscores Kakao's urgency to reinvent itself as an AI-powered super app in South Korea's increasingly competitive digital arena, where rival Naver has steadily expanded its dominance across search, e-commerce, webtoons, and digital payments.

"By bringing ChatGPT into KakaoTalk, an app that nearly all Koreans use daily, we are embedding world-class AI into the lives of people across the nation," said Oliver Jay, OpenAI's international managing director. KakaoTalk counts 49.1 million monthly active users, covering more than 90 percent of South Korea's population.
AI Aid Across Kakao Services
Beyond chatbot functionality, Kakao is building "agent AI" that connects ChatGPT with its ecosystem of services. For instance, users asking for driving music will receive curated playlists from Melon, its music streaming arm, without leaving KakaoTalk.
The overhaul also brings Instagram-style feeds to the Friends tab, new organizational tools such as chat room folders, extended message editing up to 24 hours, and AI-powered voice call summaries. Complementing the OpenAI partnership, Kakao introduced Kanana, its own on-device AI model with 1.3 billion parameters, designed to grasp Korean conversational nuance and provide context-aware suggestions. The lightweight model can be downloaded in 18 seconds over Wi-Fi, enabling features to run directly on user devices without cloud reliance.
Analysts welcomed the transformation. "KakaoTalk is expected to grow meaningfully as the world’s first messenger-based AI super app," said Choi Seung-ho of DS Investment & Securities. "Short-form content will be a key driver of user retention, while Kakao's AI service integration already outpaces global messenger peers." Kim Jin-gu of Kiwoom Securities added that ChatGPT subscriptions would strengthen data integration and accelerate the development of autonomous agents.
Kakao's strategy comes as global tech giants race to bring AI deeper into consumer platforms. On the same day, Google Play introduced a new entertainment-dedicated space in South Korea with Gemini-powered gaming support, highlighting how major players are rushing to anchor user experiences in AI.
Shares of Kakao closed Wednesday 0.79 percent lower at 62,800 won.
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