Krafton uses AI-powered text-to-speech (TTS) and voice conversion technologies, developed internally by Krafton AI, to generate character voices for game production without relying solely on voice actors. Krafton's CFO publicly stated in 2024 that TTS generates voice recordings that fit game characteristics and helps save development time and costs.

Krafton AI researches and develops TTS systems capable of generating emotionally expressive speech from text, as well as voice conversion technology that transforms one person's voice into another. The company's CFO stated that TTS 'generates voice recordings that best fit the characteristics of the game without having voice actors do a voiceover.' Krafton also uses LLM capabilities to generate 'unlimited conversations' for NPCs, combining language model outputs with TTS to produce in-game dialogue audio. Krafton has also open-sourced speech AI models (Raon-OpenTTS and Raon-Speech) on GitHub.