ego AI is building the next generation of AI-powered characters for games and interactive applications. Its flagship work, character.world, is a character engine that mixes small language models with reinforcement learning to produce human-like character behavior, going beyond chat to model personality, needs, emotion, and memory. The company summarizes its approach in a technical whitepaper titled "Behavior is All You Need," reflecting a focus on autonomous, emotionally reactive characters rather than scripted dialogue trees.
A defining feature of ego AI's system is portability. Its characters are built on the Character Context Protocol (CCP), an open-source product that allows powerful, authentic AI-powered NPCs to be integrated across many different games, apps, and platforms, including Discord and Twitch. Characters can remember conversations and refer back to them later, even recalling topics when a user encounters them in a different context, so an NPC's identity and memory can persist across worlds rather than resetting each session.
The combination of small language models and reinforcement learning is aimed at efficient, behavior-driven characters that can run responsively and act with consistent personality. By making characters autonomous and emotionally reactive, ego AI targets richer player relationships and more believable inhabitants for game worlds and social platforms alike.
Founded in 2023, ego AI is headquartered in San Francisco with additional research operations in Singapore and Tokyo, and its team includes engineers from Meta AI, Riot, and Square plus researchers from MIT, CMU, UPenn, and the University of Toronto. The company is Y Combinator-backed and has raised $6.7 million in seed funding, with investors including Boost VC's Adam Draper, who praised its foundation model as a breakthrough in AI character behavior.