David Silver's Ineffable Intelligence Raises $1.1B for RL-Based Superlearner Without Human Data

Ineffable Intelligence, a British AI lab founded by former DeepMind researcher David Silver, has raised $1.1 billion in funding at a $5.1 billion valuation. The company aims to build a "superlearner" that discovers knowledge and skills solely through reinforcement learning — trial and error — without relying on human-generated data.

Silver, a professor at University College London, previously led the reinforcement learning team at DeepMind and was instrumental in developing AlphaZero, which mastered chess and Go purely from self-play, without human strategies or game records. Ineffable's approach extends this idea: their superlearner is intended to learn all knowledge from its own experience, comparable in ambition to Darwin's theory of evolution. The company's site states: "If successful, this will represent a scientific breakthrough of comparable magnitude to Darwin: where his law explained all Life, our law will explain and build all Intelligence."

The round was led by Sequoia Capital and Lightspeed Venture Partners, with participation from Index Ventures, Google, Nvidia, the British Business Bank, and the UK's Sovereign AI fund. The valuation places Ineffable among the "coconut rounds" — massive seed-stage fundings attracted by star AI researchers. For context, AMI Labs (co-founded by Yann LeCun) raised $1.03B at a $3.5B pre-money valuation last month, and Recursive Superintelligence (co-founded by DeepMind's Tim Rocktäschel) reportedly raised $500M with potential to grow to $1B.

The venture is described by Silver as "his life's work," with any personal profits pledged to high-impact charities. The company's executive team is expected to include several former DeepMind staffers. While no timeline or revenue model has been disclosed, the funding underscores growing momentum for London as an AI hub, fueled by DeepMind alumni.