Ineffable Intelligence secures $1.1 billion to develop AI that learns independently

Apr 27, 2026

AI Summary

Ineffable Intelligence, a new AI lab founded by David Silver, has raised $1.1 billion to create a 'superlearner' that utilizes reinforcement learning to acquire knowledge without human data. The funding round was led by Sequoia Capital and Lightspeed Venture Partners, highlighting the growing momentum of AI ventures in London.

Ineffable Intelligence, founded by former DeepMind researcher David Silver, has raised $1.1 billion at a valuation of $5.1 billion.
The company aims to develop a 'superlearner' that learns through trial and error, without relying on human-generated data.
Silver previously led the reinforcement learning team at DeepMind, where he contributed to the development of AI programs like AlphaZero, which learned to play chess and Go without human strategies.
The funding round included investments from Sequoia Capital, Lightspeed Venture Partners, Index Ventures, Google, and Nvidia, among others.
Ineffable Intelligence is part of a trend of high-value AI startups emerging in London, fueled by the presence of DeepMind and other tech firms.
Silver has expressed intentions to donate any personal profits from the venture to high-impact charities.
Other AI startups, such as AMI Labs and Recursive Superintelligence, have also recently raised significant funding, indicating a competitive landscape in the AI sector.

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Ineffable Intelligence secures $1.1 billion to develop AI that learns independently

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