On October 16, Patch (@patch_gg), the X account of the Universal Modder team, posted a GTA V gameplay video. The player spoke into a mic, and Trevor, Michael, Jimmy, and people on the street each answered back in their own style and voice. Ten days later, on October 26, the X post had passed 830,000 views and 5,000 bookmarks. A Reddit r/ChatGPT post where someone else reposted the video drew 4,152 points and 437 comments, and gaming outlets including Wccftech, TweakTown, and Prima Games covered it.
Syed Hamza Bakht, a reporter at the gaming outlet Prima Games, wrote: "Personally, I was fairly surprised at how far the technology has come, and the quality seems a lot better than you might initially expect."
NPCTalk is a kit published under the Universal Modder name in Christos Antonopoulos's GitHub repository. Plug it into a coding AI like Claude Code, Codex, Gemini CLI, or Cursor, and the AI handles setting up the voice server, cloning voices, and connecting everything to the game. The code is free, but you need paid accounts for the voice server (Modal) and for speech recognition and dialogue generation (fal, Cerebras). On October 16, the team said a ready-to-play GTA V mod would come out free the following week. On October 18, they wrote it would launch on their own platform soon. As of October 26, we couldn't find a public build anyone can download. Christos's X bio lists former CEO of Remade, a company acquired by fal, and fal is one of the paid services this kit uses.
The NPC transcribes what the player says, writes a reply in that character's voice, and reads it aloud in the cloned voice. At the same time, it picks one of 16 actions that fits what it heard. According to the team's docs, with push-to-talk it takes 1.15 to 2.2 seconds from the moment the player stops speaking to the NPC's first sound.