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River AI

River AI

River AI provides an API for fine-tuning and reinforcement learning on open-weight models.

Operating headquarters
Palo Alto, CA, US🇺🇸
Founded
2026
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Latest News About River AI

North America’s Startup Funding Falls In Q3 As AI Giants Eye The Public Markets

Crunchbase News

North America’s Startup Funding Falls In Q3 As AI Giants Eye The Public Markets

In total, investors poured $92 billion into seed- through growth-stage rounds for U.S. and Canadian startups in the third quarter, per...

Oct 7, 2026

Personalized AI startup River AI raises $1.1B from consortium backed by Nvidia, AMD

SiliconANGLE

Personalized AI startup River AI raises $1.1B from consortium backed by Nvidia, AMD

River AI closed $1.1 billion across a seed and Series A so enterprises can customize open-weight models through the River API.

Aug 11, 2026

General Catalyst leads $1.1B round into 2-month-old River AI

TechCrunch

General Catalyst leads $1.1B round into 2-month-old River AI

River AI, a startup founded by xAI co-founder Igor Babuschkin, has a fascinating vision for personal agents and secured $1.1 billion out of...

Aug 11, 2026

Former xAI co-founder Igor Babuschkin's River AI raises $1.1 billion to build your own personal AI

Tech Startups

Former xAI co-founder Igor Babuschkin's River AI raises $1.1 billion to build your own personal AI

River AI raised $1.1 billion across seed and Series A to let developers fine-tune open-weight models they own through the River API.

Aug 11, 2026

River AI raised $1.1bn to let companies train and keep their own models

The Next Web

River AI raised $1.1bn to let companies train and keep their own models

River AI, founded by xAI co-founder Igor Babuschkin, announced $1.1 billion led by General Catalyst and AMP PBC, with strategic stakes from...

Aug 11, 2026

River AI Raises $1.1B Led by General Catalyst and AMP PBC to Build Open AI Stack

AP News

River AI Raises $1.1B Led by General Catalyst and AMP PBC to Build Open AI Stack

River AI said it raised $1.1 billion led by General Catalyst and AMP PBC, with strategic investment from NVIDIA and AMD Ventures and...

Aug 11, 2026