Aug 11 (Reuters) - Startup River AI, founded by xAI co-founder Igor Babuschkin, said on ‌Tuesday it has raised $1.1 billion, looking to ‌expand tools that help clients build personalized AI models on ​their own data. • River ⁠AI said it is betting that enterprise AI will shift from companies using ⁠general-purpose models from large labs to customizing and owning their own models, using open-weight models. It should ‌feel like it is working ​for the person using ​it, not the ​lab that trained it," CEO Igor ‌Babuschkin said. • Babuschkin previously worked ​on generative-modeling ​and reinforcement-learning at Google DeepMind and led large-scale training at OpenAI before co-founding xAI. • River ​AI declined to ‌comment on how much the funding valued ​it at.