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Self-improving AI & automated research · London, UK · founded 2026

Ineffable Intelligence: who founded it, who funds it

Ineffable Intelligence is a London self-improving AI lab founded in 2026 by David Silver, Wojciech Czarnecki, Lasse Espeholt, Junhyuk Oh and 3 others, who came from DeepMind and InstaDeep. What it is building: superlearner AI that learns from experience through reinforcement learning rather than human data; a deliberately long research horizon. It has raised $1.1B in disclosed rounds, most recently a Seed of $1.1B at a $5.1B valuation in April 2026, led by Sequoia and Lightspeed. It has not released anything outsiders can use yet.

Research onlySelf-improving AI & automated researchIn the essay
Website
Founders
David Silver (ex-Google DeepMind), Wojciech Czarnecki (ex-Google DeepMind), Lasse Espeholt (ex-Google DeepMind), Junhyuk Oh (ex-Google DeepMind), Alex Laterre (ex-InstaDeep), Chris Apps (ex-Google DeepMind), Heather Gorham (ex-Google DeepMind)
Founders from
ex-Google DeepMind, ex-InstaDeep
Location
London, UK (Europe)
Valuation
$5.1B set by the last priced round
Raised
$1.1B disclosed
Investors
Sequoia lead, Lightspeed lead, Nvidia, Google
What ships
Research only

Rounds

DateRoundAmountValuationLeadSource
Apr 27, 2026SeedEurope's largest seed round$1.1B$5.1BSequoia, Lightspeedtechcrunch.com

Sources

News

Investors who back other labs here

  • Nvidia also: Safe Superintelligence, Reflection AI, Skild AI, Poolside
  • Sequoia also: Safe Superintelligence, Reflection AI, Skild AI, Physical Intelligence
  • Lightspeed also: Reflection AI, Skild AI, Ricursive Intelligence, Cartesia
  • Google also: Safe Superintelligence, Sakana AI, Essential AI, Isomorphic Labs

Same research area