2026-04-27
Ineffable Intelligence raises $1.1B Seed
London-based Ineffable Intelligence raised $1.1B in a Seed round co-led by Sequoia and Lightspeed at a $5.1B valuation.
Round at a Glance
| Company | Ineffable Intelligence |
| HQ | London, United Kingdom |
| Amount | $1.1B |
| Round | Seed |
| Date | 2026-04-27 |
| Valuation | $5.1B |
| Total Disclosed Funding | $1.1B |
Company Snapshot
Ineffable Intelligence is a United Kingdom-based AI research lab. According to the company's public materials, the product helps users with reinforcement-learning-based AI systems that learn from experience rather than human data. The company was founded in late 2025 by former DeepMind reinforcement learning lead David Silver.
Investors in This Round
| Investor | Investor HQ Country | Notes |
|---|---|---|
| Sequoia Capital | United States | Co-lead |
| Lightspeed Venture Partners | United States | Co-lead |
| NVIDIA | United States | Participant |
| United States | Participant | |
| DST Global | Hong Kong | Participant |
| Index Ventures | United Kingdom | Participant |
| EQT | Sweden | Participant |
| BOND | United States | Participant |
| Flying Fish | United States | Participant |
| British Business Bank Sovereign AI Fund | United Kingdom | Participant |
Known Cap Table
| Investor | Round(s) | Investor HQ Country |
|---|---|---|
| Sequoia Capital | Seed | United States |
| Lightspeed Venture Partners | Seed | United States |
| NVIDIA | Seed | United States |
| Seed | United States | |
| Index Ventures | Seed | United Kingdom |
| EQT | Seed | Sweden |
| British Business Bank Sovereign AI Fund | Seed | United Kingdom |
Total disclosed funding: $1.1B across 1 round.
Sources
- https://tech.eu/2026/04/27/ineffable-intelligence-launches-with-record-breaking-11b-seed-round/
- https://techcrunch.com/2026/04/27/deepminds-david-silver-just-raised-1-1b-to-build-an-ai-that-learns-without-human-data/
- https://www.cnbc.com/2026/04/27/deepmind-ineffable-intelligence-record-seed-funding-nvidia-google.html