1d ago

Igor Babuschkin raises $1 billion for River AI

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XAI co-founder Igor Babuschkin is raising up to $1 billion for his new AI research startup River AI at a valuation of up to $5 billion. General Catalyst is in talks to lead the round. The company was incorporated in Nevada on April 20, 2026. Babuschkin plans to commit up to $100 million of his own funds. The round is still in progress and forms part of a wave of large early-stage AI financings for research-focused entities.

Original post

xAI co-founder Igor Babuschkin is raising for his new startup River AI.

9:30 PM · May 14, 2026 View on X

The entire NIH annual budget for neuroscience research - for all scientists across the entire US - is about $3bn a year. And now there are something like a dozen "neolabs" that have all raised O($1bn) within months of being founded, and they are all doing the same thing.

11:22 AM · May 15, 2026 · 54.1K Views

We could fund so many different things with this money. Why are we putting it into the nth startup doing the exact same thing as the n-1th startup!!

David PfauDavid Pfau@pfau

The entire NIH annual budget for neuroscience research - for all scientists across the entire US - is about $3bn a year. And now there are something like a dozen "neolabs" that have all raised O($1bn) within months of being founded, and they are all doing the same thing.

11:22 AM · May 15, 2026 · 54.1K Views
11:23 AM · May 15, 2026 · 1.9K Views

@EMostaque Astera

EmadEmad@EMostaque

@pfau It's time for a neuroscience AI neolab clearly

12:26 PM · May 15, 2026 · 2.2K Views
1:28 PM · May 15, 2026 · 659 Views

@viemccoy Touch grass, man.

𝚟𝚒𝚎 ⟢𝚟𝚒𝚎 ⟢@viemccoy

@pfau I think the thesis is something like, only one needs to work out to create an explosion that would render all other industries (including neuroscience research) hundreds of times more efficient. It's betting on creating a universal force amplifier that is field agnostic!

7:00 PM · May 15, 2026 · 636 Views
7:02 PM · May 15, 2026 · 304 Views

@pfau It's time for a neuroscience AI neolab clearly

David PfauDavid Pfau@pfau

The entire NIH annual budget for neuroscience research - for all scientists across the entire US - is about $3bn a year. And now there are something like a dozen "neolabs" that have all raised O($1bn) within months of being founded, and they are all doing the same thing.

11:22 AM · May 15, 2026 · 54.1K Views
12:26 PM · May 15, 2026 · 2.2K Views

@pfau What are they all doing?

David PfauDavid Pfau@pfau

The entire NIH annual budget for neuroscience research - for all scientists across the entire US - is about $3bn a year. And now there are something like a dozen "neolabs" that have all raised O($1bn) within months of being founded, and they are all doing the same thing.

11:22 AM · May 15, 2026 · 54.1K Views
7:27 PM · May 15, 2026 · 409 Views

@pfau I think the thesis is something like, only one needs to work out to create an explosion that would render all other industries (including neuroscience research) hundreds of times more efficient. It's betting on creating a universal force amplifier that is field agnostic!

David PfauDavid Pfau@pfau

The entire NIH annual budget for neuroscience research - for all scientists across the entire US - is about $3bn a year. And now there are something like a dozen "neolabs" that have all raised O($1bn) within months of being founded, and they are all doing the same thing.

11:22 AM · May 15, 2026 · 54.1K Views
7:00 PM · May 15, 2026 · 636 Views
Igor Babuschkin raises $1 billion for River AI · Digg