XAI cofounder's startup River AI raises $1.1 billion to expand custom AI tools - The Economic Times

XAI cofounder's startup River AI raises $1.1 billion to expand custom AI tools - The Economic Times

xAI cofounder's River AI raised $1.1B enabling custom model training on proprietary data in 15–20 minutes. Open-weight models cut costs 2–4x vs. closed alternatives and signal enterprise shift toward AI ownership, governance control, and reduced vendor lock-in.