About
Ineffable Intelligence is an AI research lab focused on developing a "superlearner" that autonomously discovers all knowledge and skills through powerful reinforcement learning algorithms. This superlearner is designed to learn from its own experience, without human data, to rediscover and transcend human inventions like language and science. The company aims to achieve a scientific breakthrough that explains and builds all intelligence.
Key facts
At-a-glance profile data
- Website
- ineffable.ai
- Headquarters
- London, United Kingdom
- Founded
- 2022
- Employees
- 19
- Total funding
- $2.1B (Seed)
- Business model
- B2B
Funding rounds
| Date | Round | Amount | Post-money | Lead investors |
|---|---|---|---|---|
| 27 Apr 2026 | Seed | $1.1B | $5.1B | Lightspeed Venture Partners, Sequoia Capital |
| 18 Feb 2026 | Undisclosed round | $1.0B | $4.0B | Sequoia Capital |
Tech stack
Detected on ineffable.ai and in its job posts, last scanned 10 Sept 2026. Run your own scan
- Backend
- Rust, Python
- Observability
- Datadog
- CMS / Builders
- Webflow
- CDN
- Cloudflare
- Hosting
- Google Cloud
- Email provider
- Google Workspace
- Hiring platform
- Ashby
- DevOps
- Kubernetes
“ineffableintelligence. a British AI lab founded a mere few months ago by former DeepMind researcher David Silver [link]”
View on Reddit“UK AI startup Ineffable Intelligence raises $1.1B in Europe's largest ever seed round.”
View on Reddit“David Silver, a former DeepMind researcher, established Ineffable Intelligence, which recently completed a record $1.1 billion seed investment. Their concept: Create a "superlearner" AI that relies solely on environment interaction and rein…”
View on Reddit“Ineffable Intelligence (founded by ex-DeepMind researcher David Silver) just raised a massive $1.1B seed round. Their idea: Build a “superlearner” AI that doesn’t train on human text at all, only through reinforcement learning and environme…”
View on Reddit“Former Google DeepMind researcher David Silver has raised $1.1B at a $5.1B valuation for Ineffable Intelligence, a company building AI that can teach itself without human generated data.”
View on RedditSome comments are pulled from public discussions around the web (look for the source icon). Quotes are excerpts; click through to read the full thread.
Frequently asked
How much funding has Ineffable Intelligence raised?
Ineffable Intelligence has raised a total of $2.1B in funding. The most recent round on record is Seed.
How many employees does Ineffable Intelligence have?
Ineffable Intelligence has approximately 19 people on record.