River AI, founded by xAI co‑founder Igor Babuschkin, secured $1.1 billion in a seed/Series A round to build a new AI stack focused on personal, trainable agents.

General Catalyst announced a $1.1 billion seed/Series A investment in River AI, the two‑month‑old startup founded by former xAI co‑founder Igor Babuschkin.

River AI’s vision and leadership

River AI aims to build a new AI stack that powers personal, trainable agents capable of learning from individual user interactions. The company’s mission is to make AI assistants that adapt uniquely to each person’s preferences and tasks.

Igor Babuschkin, who previously helped launch xAI’s flagship models, leads the effort. His background in large‑scale model development and reinforcement learning informs River AI’s focus on controllable, user‑centric agents.

Funding round details

The $1.1 billion round was led by General Catalyst, with participation from existing backers and a handful of strategic investors. The infusion will be used to scale talent, accelerate model research, and begin early product deployments.

  • General Catalyst – lead investor
  • Existing backers from Babuschkin’s prior ventures
  • Strategic partners in the AI infrastructure space

Strategic implications

Industry analysts see the sizable seed‑stage check as a signal that venture capital is betting heavily on the next generation of AI agents, beyond the large language model paradigm that dominates today.

General Catalyst’s involvement also underscores a broader trend of established VC firms seeking to back deep‑tech startups that can redefine how users interact with AI on a daily basis.

“River AI is tackling a critical gap in the market—building agents that truly understand and adapt to individual users,” said a General Catalyst partner in a briefing.

The company plans to release its first developer SDK later this year, allowing third‑party applications to integrate River AI’s personalized agents into messaging, productivity, and entertainment platforms.

TechCrunch coverage of the funding round provides additional context and quotes from both General Catalyst and Igor Babuschkin.

TechCrunch article on General Catalyst’s $1.1 billion investment in River AI