David Silver has left DeepMind. And he didn’t leave quietly.
The researcher who built AlphaGo and AlphaZero — programs that defeated world champions at Go and chess without ever studying a single human game — announced on Monday the largest seed round in European history: $1.1 billion for his new startup Ineffable Intelligence, at a $5.1 billion valuation.
What Is Ineffable Building?
The short version: a ‘superlearner.’ An AI system that acquires knowledge and skills on its own — without relying on human training data. That sounds like science fiction, but Silver has done this before. AlphaZero learned chess at a superhuman level purely by playing against itself.
Ineffable is going all-in on reinforcement learning — learning through experience rather than imitating human text. That’s a fundamentally different approach from the current LLM wave, which depends on massive text datasets.
Who’s Backing It?
The investor list reads like a tech world all-star team: Sequoia and Lightspeed co-lead the round, with Nvidia, DST Global, Index Ventures, Google, and the UK’s Sovereign AI Fund also participating. When Sequoia and Nvidia invest in the same deal, you pay attention.
Why It Matters
What fascinates me about this: Silver is pursuing a radically different approach from every major AI lab right now. While Anthropic, OpenAI, and Google keep feeding their models more data and compute, Silver is essentially saying: you don’t need human data at all. If he’s right, it could rewrite the rules entirely.
Will it work? Who knows. But if anyone has the credibility to pull off this approach, it’s the creator of AlphaZero.
Sources: CNBC, TechCrunch, Bloomberg