# UK AI Startup Ineffable Raises $1.1 Billion in Seed Round

- Category: Flash (快讯)
- Published: 2026-04-29T11:50:00.000Z
- Source date: 2026-04-29
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UK AI startup Ineffable has completed an $1.1 billion seed funding round, reaching a $5.1 billion valuation and setting a European record. Founded by former DeepMind chief scientist David Silver, the company is backed by Sequoia and Lightspeed, with participation from Nvidia and Google, aiming to develop autonomous super learning systems that do not require human data.

## At a glance

- Ineffable raises $1.1 billion in seed funding at a $5.1 billion valuation, setting a European record
- Founded by David Silver and led by Sequoia and Lightspeed, it aims to build autonomous systems without human data dependency

## The update

UK artificial intelligence startup Ineffable has announced the completion of a seed funding round totaling $1.1 billion, bringing its valuation to $5.1 billion. This financing scale sets a new record for the largest seed round in European history. The investment was co-led by Sequoia Capital and Lightspeed Venture Partners, with participation from tech giants such as Nvidia and Google. Ineffable was founded by David Silver, the former chief scientist at Google DeepMind and a core developer of AlphaGo. The company's primary goal is to create a 'super learning system' that does not rely on human data but instead explores and acquires knowledge through autonomous practice, aiming to achieve a more independent path of intelligent evolution.

## Sources

- [智东西](https://mp.weixin.qq.com/s/2HlpvDnb_oa6RiXXqZ-WYA) (2026-04-29)

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