Ineffable Intelligence
Category: Foundation Models / LLMs
Ineffable Intelligence is an AI research lab building a superlearner that discovers knowledge through reinforcement learning rather than human-generated data. Ineffable Intelligence was founded in 2025. The company is led by David Silver. Based in London, United Kingdom. Team size: 11-50. Total funding raised: $1.1B. Latest round: Seed. Key investors include Sequoia Capital, Lightspeed Venture Partners, Nvidia, Google, Index Ventures, DST Global, UK Sovereign AI Fund, British Business Bank, Flying Fish Partners.
- Founded
- 2025
- Headquarters
- London, United Kingdom
- Team size
- 11-50
- Total funding
- $1.1B
Value proposition
Develops AI systems that learn from their own experience through reinforcement learning, aiming to achieve superintelligence by scaling self-learning agents.
Products and solutions
Superlearner AI system based on reinforcement learning
Target customer
Enterprises and researchers seeking foundation models that can autonomously discover knowledge and solve complex problems across science, mathematics, and technology.
Industries served
Research, Artificial Intelligence
Technology advantage
Reinforcement learning-first approach that learns from experience rather than human data, challenging the dominant large language model paradigm; led by world-renowned AI researcher David Silver.
How they differentiate
Focuses on reinforcement learning and self-experience learning as an alternative path to AGI/ASI, unlike most labs that rely on scaling laws and large language models trained on human text.
Main competitors
OpenAI, Anthropic, DeepMind, AMI Labs
Key partnerships
Sequoia Capital, Lightspeed Venture Partners, Nvidia, Google, Index Ventures, DST Global, UK Sovereign AI Fund, British Business Bank
Major milestones
Founded by David Silver in November 2025, Raised $1.1B seed round at $5.1B valuation, Europe's largest seed round ever, Launched from stealth in April 2026
Market positioning
A frontier AI research lab competing with OpenAI, Anthropic, and DeepMind, but focused on a different technical approach: reinforcement learning over language models.
About David Silver
Former lead of reinforcement learning team at Google DeepMind, lead developer of AlphaGo and AlphaZero, professor at University College London.
Official website: https://www.ineffable.ai/