ARTFEED — Contemporary Art Intelligence

Ex-DeepMind researcher David Silver raises $1.1B seed round for London AI startup Ineffable Intelligence

ai-technology · 2026-04-27

David Silver, a former DeepMind researcher, has raised a $1.1 billion seed round for his London-based AI startup Ineffable Intelligence. The round was led by Sequoia and Lightspeed, valuing the months-old company at $5.1 billion. This is the largest seed round ever in Europe. The startup aims to develop advanced AI systems, though specific details about its technology or products remain undisclosed. Silver is a prominent figure in AI research, known for his work on reinforcement learning and AlphaGo at DeepMind.

Key facts

  • David Silver is a former DeepMind researcher.
  • Ineffable Intelligence is a London-based AI startup.
  • The seed round raised $1.1 billion.
  • The round was led by Sequoia and Lightspeed.
  • The startup is valued at $5.1 billion.
  • This is the largest seed round ever in Europe.
  • The startup is months old.
  • Specific technology or products are undisclosed.

Entities

Artists

  • David Silver

Institutions

  • DeepMind
  • Sequoia
  • Lightspeed
  • Ineffable Intelligence

Locations

  • London
  • United Kingdom

Sources