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# River AI raises $1.1B two months after founding
- URL: https://www.enterprisey.com/river-ai-raises-1-1b-two-months-after-founding/
- Published: 2026-08-11T21:45:00.000Z
- Updated: 2026-10-26T04:16:43.000Z
- Description: River AI, the startup led by xAI co-founder Igor Babuschkin, raised $1.1B to sell an API that lets developers and enterprises fine-tune and serve their own open-weight models.
- Author: Enterprisey Admin
- Tags: News, Funding

River AI, the startup led by xAI co-founder Igor Babuschkin, raised $1.1B to sell an API that lets developers and enterprises fine-tune and serve their own open-weight models. ([TechCrunch](https://techcrunch.com/2026/08/11/general-catalyst-leads-1-1b-round-into-2-month-old-river-ai/?ref=enterprisey.com); [The Next Web](https://thenextweb.com/news/river-ai-1-1-billion-babuschkin-general-catalyst-open-weights?ref=enterprisey.com); [Tech Monitor](https://www.techmonitor.ai/?p=421511&ref=enterprisey.com))

General Catalyst and AMP PBC led, with Nvidia, AMD Ventures, Y Combinator and Temasek participating. The service supports LoRA fine-tuning and reinforcement learning and bills by tokens used. ([TechCrunch](https://techcrunch.com/2026/08/11/general-catalyst-leads-1-1b-round-into-2-month-old-river-ai/?ref=enterprisey.com); [The Next Web](https://thenextweb.com/news/river-ai-1-1-billion-babuschkin-general-catalyst-open-weights?ref=enterprisey.com); [Tech Monitor](https://www.techmonitor.ai/?p=421511&ref=enterprisey.com))