Ineffable Intelligence

Active#8 worldwide · Foundation models

London lab founded by David Silver building a reinforcement-learning system that learns from its own experience rather than from human-written data.

Artificial intelligence›Foundation models ineffable.ai

HQUnited Kingdom

Last roundSeed · Apr 2026

Uback rankings

How the AI ranks →

Ranking	Tier	Rank	Edition	Next update
Foundation models · worldwide	Top 27	#8	Edition 0 · Oct 2026	4 Jan 2027

Rank historyOct 2026 · #8 Foundation modelsFirst edition: no movements yet.

Estimated valuation

AI · Foundation models ranking (worldwide)

≈ USD 5.1bnUSD 4.1–6.4bn · Unicorn

Hundreds of k$

Millions $

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Unicorn

Decacorn

Hectocorn

Anchor: Last known equity round: Seed · USD 1.1bn · Apr 2026
Published valuation: USD 5.1bn post-money · Apr 2026

An indicative editorial estimate produced by AI, imperfect by nature: neither a financial valuation nor investment advice. Only the market sets a company’s value. Method

Funding history

Date	Round	Amount	Type	Investors
Apr 2026	Seed	USD 1.1bn	Equity	Sequoia, Lightspeed, Nvidia, Google, Index, DST, EQT, British Business Bank

Rounds as cited by Uback’s rankings. Equity, debt and grants are shown separately; only equity rounds count towards the valuation anchor.

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What the AI reads

Read by the AI at the next edition.

Comparable companies in foundation models

Full foundation models ranking →

Cohere#7CanadaDecacorn Recursive Superintelligence#9United StatesUnicorn Thinking Machines Lab#6United StatesDecacorn AMI Labs#10FranceUnicorn

Investors in Ineffable Intelligence: Sequoia Capital · Lightspeed · NVIDIA · Google · Index · DST Global · EQT · British Business Bank

Last updated: Oct 2026Report an error

Uback is a content publisher and an aggregator of non-binding expressions of interest. It provides no investment advice, receives no mandate and takes part in no transaction. Rankings, ranges and brackets are editorial estimates produced by AI, purely indicative.