The role of AI in the gaming industry is growing rapidly, from generating sprites and visual elements to generating storylines or character responses and even voices. As big game studios adopt AI, smaller indie game devs also have many tools at their disposal to accelerate their game production. In 2024 the AI gaming market was estimated to be $3.3 billion with projections to reach $51 billion by 2033. Because of their ability to cut production time and cost to a fraction many game studios are using AI in all phases of their video game development. For NPC‘s, one crucial way to use AI is for their voices. A realistic and natural sounding voice can power engaging dialogue with the user while they don’t even realize it’s AI. Studios can use premade voices or even clone voice actors to perfect their desired tone and voice qualities. As a game developer, choosing the right voice cloner is extremely important in conveying the correct emotional tone and expressiveness to match the environment of the game. If you start with several voice actors, game developers can clone their voices and produce hours of speech in mere minutes. Moreover, they can use AI voice design to create fantastical voices such as a dragon voice, ogre voice, or elf voice, which for human actors are very hard to find.

How to Choose a Voice Cloner

When choosing a voice cloner, there are many qualities to consider. First and foremost is the audio quality. The audio quality must sound professionally recorded with clarity and minimal audio artifacts. In 2026, the top voice cloners are capable of producing completely natural-sounding voices indistinguishable from humans. The voice cloner must also sound realistic and capture the emotional qualities of the NPC. A voice cloner must also be sufficiently fast and scalable to support the requirements of the game developers. For real-time characters such as live companions, real-time streaming support is also a necessity.

5 Best AI Voice Cloners for NPCs

1. Fish Audio

Fish Audio provides voice cloning with as little as 10 seconds of audio. The produced audio is indistinguishable from that person’s real voice, and can be generated with text-to-speech for long lengths of transcripts, allowing fast experimentation and studio-quality audio.

2. Minimax Audio

Minimax Audio provides accurate voice cloning given consistent voice samples. They provide free generations every day.

3. Speechify

Speechify offers high-quality voice cloning with team sharing abilities.

4. ElevenLabs

ElevenLabs has a user-friendly platform with many community-generated voices to choose from. Creators can clone anyone’s voice and offer them for others to use.

5. Resemble AI

Resemble AI has fast and professional voice cloning with deepfake audio detection as well.

From these options game developers can rapidly experiment and prototype voices for NPCs and other characters in games. The best tools today offer studio-quality audio with easy to use controls and high emotional steerability. Fish Audio is consistently rated as the top voice cloner for game developers given their audio quality and voice cloning consistency.