Ineffable Intelligence, founded by former DeepMind researcher David Silver (creator of AlphaGo), closed a $1.1B seed round at a $5.1B valuation on April 27 — the largest seed round ever raised in Europe. Sequoia and Lightspeed co-led; Nvidia, Google, DST Global, and the UK Sovereign AI Fund participated. The company aims to build a 'superlearner' that acquires knowledge via reinforcement learning without human-generated training data. Silver pledged 100% of personal equity gains to charity through Founders Pledge.